Subject: Re: [Tigers] BMR radiator

From: michael king via Tigers <[email-masked]>
Date: Fri, 2 Jul 2021 18:23:00 +0800

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Hey Owain,

Not sure about the BMR, but the Dales ones were actually Fluidyne
radiators.

The Griffin ones were a separate company and IIRC had the glued together
cores.

I hear different things about evans.. one of the things i have heard is
that the coolant runs hotter, but that it doesn't boil, so i guess to ask:
Apart from it registering physically hotter, was it suffering any adverse
effects?
Did it start vaporising the fuel?
Did it start running rough?
Did it puke the coolant?

On Fri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers <[email-masked]>
wrote:

> Last year my Dale A (Griffin?) radiator cracked and I replaced it with
> this one from BMR in the UK:
>
>
> https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminium-Radiator-p146886570
>
> Not really used the car since except a couple of short trips.
>
> This week I was going to take the tiger out for a run over some mountain
> passes but after about 30 minutes, no traffic, it was running at well over
> 100C / ~230F.  I returned home and checked everything over.
>
> 1. Full of fresh Evans waterless coolant.
> 2. gauge is mechanical
> 3. horn holes blocked, along with gap between rad and crossmember.
> 4. fan shroud in place with 13" flex fan on water pump hub.
> 5. doesn't overheat at idle even when left running for 30 minutes.
>
> I've NEVER had a problem with overheating at speed before.  the only
> issues I had were at idle or in traffic / slow speed but even those had
> been solved by all the above.  engine is a 490hp 347, but wasn't a problem
> before.
>
> everything is pointing at the BMR radiator just being a bit crap and not
> doing as good a job as the Dale rad.  anyone running one of these?
>
> _______________________________________________
>
> [email-masked]
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/tigers
> http://autox.team.net/archive
>
> Unsubscribe:
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>
>
>

-- 
Regards

Michael King

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<div dir=3D"ltr">Hey Owain,<div><br><div>Not sure about the BMR, but the Da=
les ones were actually Fluidyne radiators.=C2=A0</div><div><br></div><div>T=
he Griffin ones were a separate company and IIRC had the glued together cor=
es.</div><div><br></div><div>I hear different things about evans.. one of t=
he things i have heard=C2=A0is that the coolant runs hotter, but that it do=
esn&#39;t=C2=A0boil,=C2=A0so i guess to ask:</div><div>Apart from it regist=
ering physically hotter, was it suffering any adverse effects?</div><div>Di=
d it start vaporising the fuel?</div><div>Did it start running rough?</div>=
<div>Did it puke the coolant?</div><div><br></div><div><br></div></div></di=
v><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On F=
ri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers &lt;<a href=3D"mailto:tiger=
[email-masked]">[email-masked]</a>&gt; wrote:<br></div><blockquote=
 class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px so=
lid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">Last year my Dale A=
 (Griffin?) radiator cracked and I replaced it with this one from BMR in th=
e UK:<br>=C2=A0<br><a href=3D"https://www.motorsportradiators.co.uk/store/S=
unbeam-Tiger-Aluminium-Radiator-p146886570" target=3D"_blank">https://www.m=
otorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminium-Radiator-p146886570<=
/a><br><br>Not really used the=C2=A0car since except a=C2=A0couple of short=
 trips.<div><br>This week I was going to take the tiger out for a run over =
some mountain passes but after about 30 minutes, no traffic, it was running=
 at well over 100C / ~230F.=C2=A0 I returned home and checked everything ov=
er.<br><br>1. Full of fresh Evans waterless coolant. =C2=A0<br>2. gauge is =
mechanical<br>3. horn holes blocked, along with gap between rad and crossme=
mber.<br>4. fan shroud in place with 13&quot; flex fan on water pump hub.<b=
r>5. doesn&#39;t overheat at idle even when left running for 30 minutes.<br=
><br>I&#39;ve NEVER had a problem with overheating at speed before. =C2=A0t=
he only issues I had were at idle=C2=A0or in traffic / slow speed but even =
those had been solved by all the above. =C2=A0engine is a 490hp 347, but wa=
sn&#39;t a problem before.<br><br>everything is pointing at the BMR radiato=
r just being a bit crap and not doing as good a job as the Dale rad. =C2=A0=
anyone running one of these?<br></div><div><br></div></div>
_______________________________________________<br>
<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
m.net</a><br>
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et=3D"_blank">http://www.team.net/donate.html</a><br>
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<br>
<br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
 class=3D"gmail_signature">Regards<br><br>Michael King</div>

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From: Owain Lloyd via Tigers <[email-masked]>
Date: Fri, 2 Jul 2021 12:42:27 +0200

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Fluidyne - right.
indeed.  there is no pressure increase at that temperature with Evans.  you
can literally remove the cap with your bare hand.
the specific heat capacity isn't quite as good (it's hard to beat water
after all), but the advantages in terms of lack of corrosion (and lack of
expansion) are worth that for me.
the point is that i ran Evans before with the Dale rad and it never ran
that hot.  it was running fine at the high temp (I drove it home at that
temp - no problems - fueling perfect) but it reaches a point where you just
don't want the engine too hot.  iron block, aluminium heads and pistons -
the hotter it gets the more the expansion differences will become.

>> doing as good a job as the Dale rad.  anyone running one of these?

--00000000000049dcce05c6219d69
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">Fluidyne - right.<div>indeed.=C2=A0 there is no pressure i=
ncrease at that temperature with Evans.=C2=A0 you can literally=C2=A0remove=
 the cap with your bare hand.=C2=A0=C2=A0<div>the specific heat capacity is=
n&#39;t quite as good (it&#39;s hard to beat water after all), but the adva=
ntages in terms of lack of corrosion (and lack of expansion) are worth that=
 for me.</div><div>the point is that i ran Evans before with the Dale rad a=
nd it never ran that hot.=C2=A0 it was running fine at the high temp (I dro=
ve it home at that temp - no problems - fueling perfect) but it reaches a p=
oint where you just don&#39;t want the engine too hot.=C2=A0 iron=C2=A0bloc=
k, aluminium heads and pistons - the hotter it gets the more the expansion =
differences will become.</div></div></div><br><div class=3D"gmail_quote"><d=
iv dir=3D"ltr" class=3D"gmail_attr">On Fri, Jul 2, 2021 at 12:23 PM michael=
 king &lt;<a href=3D"mailto:[email-masked]">michael.s.king@gmail.=
com</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"marg=
in:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1e=
x"><div dir=3D"ltr">Hey Owain,<div><br><div>Not sure about the BMR, but the=
 Dales ones were actually Fluidyne radiators.=C2=A0</div><div><br></div><di=
v>The Griffin ones were a separate company and IIRC had the glued together =
cores.</div><div><br></div><div>I hear different things about evans.. one o=
f the things i have heard=C2=A0is that the coolant runs hotter, but that it=
 doesn&#39;t=C2=A0boil,=C2=A0so i guess to ask:</div><div>Apart from it reg=
istering physically hotter, was it suffering any adverse effects?</div><div=
>Did it start vaporising the fuel?</div><div>Did it start running rough?</d=
iv><div>Did it puke the coolant?</div><div><br></div><div><br></div></div><=
/div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">O=
n Fri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers &lt;<a href=3D"mailto:ti=
[email-masked]" target=3D"_blank">[email-masked]</a>&gt; wrote:=
<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8=
ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr=
">Last year my Dale A (Griffin?) radiator cracked and I replaced it with th=
is one from BMR in the UK:<br>=C2=A0<br><a href=3D"https://www.motorsportra=
diators.co.uk/store/Sunbeam-Tiger-Aluminium-Radiator-p146886570" target=3D"=
_blank">https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminium=
-Radiator-p146886570</a><br><br>Not really used the=C2=A0car since except a=
=C2=A0couple of short trips.<div><br>This week I was going to take the tige=
r out for a run over some mountain passes but after about 30 minutes, no tr=
affic, it was running at well over 100C / ~230F.=C2=A0 I returned home and =
checked everything over.<br><br>1. Full of fresh Evans waterless coolant. =
=C2=A0<br>2. gauge is mechanical<br>3. horn holes blocked, along with gap b=
etween rad and crossmember.<br>4. fan shroud in place with 13&quot; flex fa=
n on water pump hub.<br>5. doesn&#39;t overheat at idle even when left runn=
ing for 30 minutes.<br><br>I&#39;ve NEVER had a problem with overheating at=
 speed before. =C2=A0the only issues I had were at idle=C2=A0or in traffic =
/ slow speed but even those had been solved by all the above. =C2=A0engine =
is a 490hp 347, but wasn&#39;t a problem before.<br><br>everything is point=
ing at the BMR radiator just being a bit crap and not doing as good a job a=
s the Dale rad. =C2=A0anyone running one of these?<br></div><div><br></div>=
</div>
_______________________________________________<br>
<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
m.net</a><br>
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et=3D"_blank">http://www.team.net/donate.html</a><br>
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<br>
<br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
>Regards<br><br>Michael King</div>
</blockquote></div>

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[email-masked]

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---

From: Buck Trippel via Tigers <[email-masked]>
Date: Fri, 2 Jul 2021 07:26:31 -0700

This is a multipart message in MIME format.

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Content-Transfer-Encoding: quoted-printable

I would not assume the problem is the radiator. I=E2=80=99d also look =
carefully at the Evans coolant before scrapping the radiator.

=20

As Michael pointed out, and I=E2=80=99m positive you already know, Evans =
(largely propylene glycol) has poor specific heat compared to water =
(0.66?). It just doesn=E2=80=99t pickup the heat from the engine and =
move it into the radiator nearly as well as pure water.

=20

A few years ago Claudia and I tested Evans in a Tiger. We found it =
lacking.=20

First we did some idle duration tests. We did one with pure water, one =
with partial coolant and finally one with only Evans. As we suspected, =
the time to heat to 230 decreased markedly with the Evans. Then we took =
our test on the road in a nearly a 4,800 mile trip around the country in =
August of 2019.

We frequently ran with air temps over 100F and hit 116F at one point. We =
drove from LA to Reno, Bonneville, Salt Lake, Mount Rushmore, the =
Badlands and across the plains to La Crosse. On the return we went =
through Denver then south to Albuquerque and followed the traditional =
Route 66 back to SoCal.=20

=20

At altitudes around 5,000 feet with air temperatures near or slightly =
over 100, the Evans coolant met it=E2=80=99s match. It could not remove =
the engine heat fast enough to keep the engine from stopping due to fuel =
percolation inside the carb=E2=80=99s bowls.  In Pueblo, Colorado, we =
had about half the Evans removed and replaced it with water. Certainly =
the density altitude had an effect. (This mixture did later =
=E2=80=9Cpuke=E2=80=9D once but that was when I tried crossing the =
Mojave desert when the OAT was 116. After that happened I limped along =
using the water temperature gauge as my only speedometer.)

=20

Owain, you may want to drain out the Evans and repeat your run of =
mountain passes with water before tossing out that radiator. If you do, =
I=E2=80=99d greatly appreciate leaning your results. (For me, all the =
theory in the world tends to go out the window when faced with a good =
empirical test!)

=20

Good luck!

=20

Buck

=20

=20

From: Tigers <[email-masked]> On Behalf Of Owain Lloyd =
via Tigers
Sent: Friday, July 2, 2021 3:42 AM
To: michael king <[email-masked]>
Cc: [email-masked]
Subject: Re: [Tigers] BMR radiator

=20

Fluidyne - right.

indeed.  there is no pressure increase at that temperature with Evans.  =
you can literally remove the cap with your bare hand. =20

the specific heat capacity isn't quite as good (it's hard to beat water =
after all), but the advantages in terms of lack of corrosion (and lack =
of expansion) are worth that for me.

the point is that i ran Evans before with the Dale rad and it never ran =
that hot.  it was running fine at the high temp (I drove it home at that =
temp - no problems - fueling perfect) but it reaches a point where you =
just don't want the engine too hot.  iron block, aluminium heads and =
pistons - the hotter it gets the more the expansion differences will =
become.

=20

On Fri, Jul 2, 2021 at 12:23 PM michael king <[email-masked] =

Hey Owain,

=20

Not sure about the BMR, but the Dales ones were actually Fluidyne =
radiators.=20

=20

The Griffin ones were a separate company and IIRC had the glued together =
cores.

=20

I hear different things about evans.. one of the things i have heard is =
that the coolant runs hotter, but that it doesn't boil, so i guess to =
ask:

Apart from it registering physically hotter, was it suffering any =
adverse effects?

Did it puke the coolant?

=20

=20

=20

On Fri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers =

Last year my Dale A (Griffin?) radiator cracked and I replaced it with =
this one from BMR in the UK:
=20
https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminium-Radia=
tor-p146886570

This week I was going to take the tiger out for a run over some mountain =
passes but after about 30 minutes, no traffic, it was running at well =
over 100C / ~230F.  I returned home and checked everything over.

1. Full of fresh Evans waterless coolant. =20
2. gauge is mechanical
3. horn holes blocked, along with gap between rad and crossmember.
4. fan shroud in place with 13" flex fan on water pump hub.
5. doesn't overheat at idle even when left running for 30 minutes.

I've NEVER had a problem with overheating at speed before.  the only =
issues I had were at idle or in traffic / slow speed but even those had =
been solved by all the above.  engine is a 490hp 347, but wasn't a =
problem before.

everything is pointing at the BMR radiator just being a bit crap and not =
doing as good a job as the Dale rad.  anyone running one of these?

=20

Archive: http://www.team.net/pipermail/tigers =
http://autox.team.net/archive

Unsubscribe: =

=20

--=20

Regards

Michael King

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vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal>I would not assume the problem =
is the radiator. I=E2=80=99d also look carefully at the Evans coolant =
before scrapping the radiator.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>As Michael =
pointed out, and I=E2=80=99m positive you already know, Evans (largely =
propylene glycol) has poor specific heat compared to water (0.66?). It =
just doesn=E2=80=99t pickup the heat from the engine and move it into =
the radiator nearly as well as pure water.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>A few years =
ago Claudia and I tested Evans in a Tiger. We found it lacking. =
<o:p></o:p></p><p class=3DMsoNormal><br>First we did some idle duration =
tests. We did one with pure water, one with partial coolant and finally =
one with only Evans. As we suspected, the time to heat to 230 decreased =
markedly with the Evans. Then we took our test on the road in a nearly a =
4,800 mile trip around the country in August of 2019.<o:p></o:p></p><p =
class=3DMsoNormal>We frequently ran with air temps over 100F and hit =
116F at one point. We drove from LA to Reno, Bonneville, Salt Lake, =
Mount Rushmore, the Badlands and across the plains to La Crosse. On the =
return we went through Denver then south to Albuquerque and followed the =
traditional Route 66 back to SoCal. <o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>At altitudes =
around 5,000 feet with air temperatures near or slightly over 100, the =
Evans coolant met it=E2=80=99s match. It could not remove the engine =
heat fast enough to keep the engine from stopping due to fuel =
percolation inside the carb=E2=80=99s bowls.=C2=A0 In Pueblo, Colorado, =
we had about half the Evans removed and replaced it with water. =
Certainly the density altitude had an effect. (This mixture did later =
=E2=80=9Cpuke=E2=80=9D once but that was when I tried crossing the =
Mojave desert when the OAT was 116. After that happened I limped along =
using the water temperature gauge as my only =
speedometer.)<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Owain, you may want to drain out the Evans and repeat =
your run of mountain passes with water before tossing out that radiator. =
If you do, I=E2=80=99d greatly appreciate leaning your results. (For me, =
all the theory in the world tends to go out the window when faced with a =
good empirical test!)<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p class=3DMsoNormal>Good =
luck!<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Buck<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b>From:</b> Tigers =
&lt;[email-masked]&gt; <b>On Behalf Of </b>Owain Lloyd =
via Tigers<br><b>Sent:</b> Friday, July 2, 2021 3:42 AM<br><b>To:</b> =
michael king &lt;[email-masked]&gt;<br><b>Cc:</b> =
[email-masked]<br><b>Subject:</b> Re: [Tigers] BMR =
radiator<o:p></o:p></p></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p =
class=3DMsoNormal>Fluidyne - right.<o:p></o:p></p><div><p =
class=3DMsoNormal>indeed.&nbsp; there is no pressure increase at that =
temperature with Evans.&nbsp; you can literally&nbsp;remove the cap with =
your bare hand.&nbsp;&nbsp;<o:p></o:p></p><div><p class=3DMsoNormal>the =
specific heat capacity isn't quite as good (it's hard to beat water =
after all), but the advantages in terms of lack of corrosion (and lack =
of expansion) are worth that for me.<o:p></o:p></p></div><div><p =
class=3DMsoNormal>the point is that i ran Evans before with the Dale rad =
and it never ran that hot.&nbsp; it was running fine at the high temp (I =
drove it home at that temp - no problems - fueling perfect) but it =
reaches a point where you just don't want the engine too hot.&nbsp; =
iron&nbsp;block, aluminium heads and pistons - the hotter it gets the =
more the expansion differences will =
become.<o:p></o:p></p></div></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMsoNormal>On =
Fri, Jul 2, 2021 at 12:23 PM michael king &lt;<a =
href=3D"mailto:[email-masked]">[email-masked]</a>&gt;=
 wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=3DMsoNormal>Hey =
Owain,<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal>Not =
sure about the BMR, but the Dales ones were actually Fluidyne =
radiators.&nbsp;<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>The Griffin ones were a separate company and IIRC had =
the glued together cores.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p class=3DMsoNormal>I =
hear different things about evans.. one of the things i have =
heard&nbsp;is that the coolant runs hotter, but that it =
doesn't&nbsp;boil,&nbsp;so i guess to ask:<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Apart from it registering physically hotter, was it =
suffering any adverse effects?<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Did it start vaporising the =
fuel?<o:p></o:p></p></div><div><p class=3DMsoNormal>Did it start running =
rough?<o:p></o:p></p></div><div><p class=3DMsoNormal>Did it puke the =
coolant?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMsoNormal>On =
Fri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers &lt;<a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=3DMsoNormal>Last =
year my Dale A (Griffin?) radiator cracked and I replaced it with this =
one from BMR in the UK:<br>&nbsp;<br><a =
href=3D"https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Alumini=
um-Radiator-p146886570" =
target=3D"_blank">https://www.motorsportradiators.co.uk/store/Sunbeam-Tig=
er-Aluminium-Radiator-p146886570</a><br><br>Not really used the&nbsp;car =
since except a&nbsp;couple of short trips.<o:p></o:p></p><div><p =
class=3DMsoNormal><br>This week I was going to take the tiger out for a =
run over some mountain passes but after about 30 minutes, no traffic, it =
was running at well over 100C / ~230F.&nbsp; I returned home and checked =
everything over.<br><br>1. Full of fresh Evans waterless coolant. =
&nbsp;<br>2. gauge is mechanical<br>3. horn holes blocked, along with =
gap between rad and crossmember.<br>4. fan shroud in place with 13&quot; =
flex fan on water pump hub.<br>5. doesn't overheat at idle even when =
left running for 30 minutes.<br><br>I've NEVER had a problem with =
overheating at speed before. &nbsp;the only issues I had were at =
idle&nbsp;or in traffic / slow speed but even those had been solved by =
all the above. &nbsp;engine is a 490hp 347, but wasn't a problem =
before.<br><br>everything is pointing at the BMR radiator just being a =
bit crap and not doing as good a job as the Dale rad. &nbsp;anyone =
running one of these?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'>__________________________________________=
_____<br><br><a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a><br><br>Donate: <a =
href=3D"http://www.team.net/donate.html" =
target=3D"_blank">http://www.team.net/donate.html</a><br>Archive: <a =
href=3D"http://www.team.net/pipermail/tigers" =
target=3D"_blank">http://www.team.net/pipermail/tigers</a> <a =
href=3D"http://autox.team.net/archive" =
target=3D"_blank">http://autox.team.net/archive</a><br><br>Unsubscribe: =
<a =
href=3D"http://autox.team.net/mailman/options/tigers/michael.s.king@gmail=
.com" =
target=3D"_blank">http://autox.team.net/mailman/options/tigers/michael.s.=
[email-masked]</a><br><br><o:p></o:p></p></blockquote></div><p =
class=3DMsoNormal><br clear=3Dall><o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><p class=3DMsoNormal>-- =
<o:p></o:p></p><div><p class=3DMsoNormal>Regards<br><br>Michael =
King<o:p></o:p></p></div></blockquote></div></div></body></html>
------=_NextPart_000_1486_01D76F13.94FDC600--

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[email-masked]

--===============3393254282271511885==--

---

From: michael king via Tigers <[email-masked]>
Date: Fri, 2 Jul 2021 22:31:09 +0800

--===============0913906000047453575==

--0000000000008534d005c624cef4

Owain,

Were there any other changes you made when swapping the radiator out?

Did you change the lower radiator hose? Does it have a spring in it to stop
it collapsing and restricting at higher rpm? That will cause issues at
speed but not idle

The gauge being mechanical rules out usual sender/ earth issues.

What depth is the core on the new rad v old one, maybe fan is to close to
the radiator and not pulling properly ( though that should more be an idle
issue than on the run )

What is the fin density and how many cores... Maybe its not getting as much
air passing cleanly through and not dissipating as well as the fluidyne.

Do you run an electric fan? I once had my car overheat as i had the wires
reversed and the fan was spinning reverse and pushing air away from the
grill whwn i came on... But again....more an issue at idle.

On Friday, 2 July 2021, Owain Lloyd <[email-masked]> wrote:

> Fluidyne - right.
> indeed.  there is no pressure increase at that temperature with Evans.
> you can literally remove the cap with your bare hand.
>> On Fri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers <
>> [email-masked]> wrote:
>>
>>> Unsubscribe: http://autox.team.net/mailman/
>>> options/tigers/[email-masked]
>>>
>>>
>>>
>>
>> --
>> Regards
>>
>> Michael King
>>
>

-- 
Regards

Michael King

--0000000000008534d005c624cef4
Content-Transfer-Encoding: quoted-printable

Owain,<div><br></div><div>Were there any other changes you made when swappi=
ng the radiator out?</div><div><br></div><div>Did you change the lower radi=
ator hose? Does it have a spring in it to stop it collapsing and restrictin=
g at higher rpm? That will cause issues at speed but not idle=C2=A0</div><d=
iv><br></div><div>The gauge being mechanical rules out usual sender/ earth =
issues.</div><div><br></div><div>What depth is the core on the new rad v ol=
d one, maybe fan is to close to the radiator and not pulling properly ( tho=
ugh that should more be an idle issue than on the run )=C2=A0</div><div><br=
></div><div>What is the fin density and how many cores... Maybe its not get=
ting as much air passing cleanly through and not dissipating as well as the=
 fluidyne.</div><div><br></div><div>Do you run an electric fan? I once had =
my car overheat as i had the wires reversed and the fan was spinning revers=
e and pushing air away from the grill whwn i came on... But again....more a=
n issue at idle.<br><br>On Friday, 2 July 2021, Owain Lloyd &lt;<a href=3D"=
mailto:[email-masked]">[email-masked]</a>&gt; wrote:<br><bloc=
kquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #cc=
c solid;padding-left:1ex"><div dir=3D"ltr">Fluidyne - right.<div>indeed.=C2=
=A0 there is no pressure increase at that temperature with Evans.=C2=A0 you=
 can literally=C2=A0remove the cap with your bare hand.=C2=A0=C2=A0<div>the=
 specific heat capacity isn&#39;t quite as good (it&#39;s hard to beat wate=
r after all), but the advantages in terms of lack of corrosion (and lack of=
 expansion) are worth that for me.</div><div>the point is that i ran Evans =
before with the Dale rad and it never ran that hot.=C2=A0 it was running fi=
ne at the high temp (I drove it home at that temp - no problems - fueling p=
erfect) but it reaches a point where you just don&#39;t want the engine too=
 hot.=C2=A0 iron=C2=A0block, aluminium heads and pistons - the hotter it ge=
ts the more the expansion differences will become.</div></div></div><br><di=
v class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, Jul 2=
, 2021 at 12:23 PM michael king &lt;<a href=3D"mailto:michael.s.king@gmail.=
com" target=3D"_blank">[email-masked]</a>&gt; wrote:<br></div><bl=
ockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-lef=
t:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">Hey Owain,<=
div><br><div>Not sure about the BMR, but the Dales ones were actually Fluid=
yne radiators.=C2=A0</div><div><br></div><div>The Griffin ones were a separ=
ate company and IIRC had the glued together cores.</div><div><br></div><div=
>I hear different things about evans.. one of the things i have heard=C2=A0=
is that the coolant runs hotter, but that it doesn&#39;t=C2=A0boil,=C2=A0so=
 i guess to ask:</div><div>Apart from it registering physically hotter, was=
 it suffering any adverse effects?</div><div>Did it start vaporising the fu=
el?</div><div>Did it start running rough?</div><div>Did it puke the coolant=
?</div><div><br></div><div><br></div></div></div><br><div class=3D"gmail_qu=
ote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, 2 Jul 2021 at 17:54, Owa=
in Lloyd via Tigers &lt;<a href=3D"mailto:[email-masked]" target=3D"=
_blank">[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"=
gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(20=
4,204,204);padding-left:1ex"><div dir=3D"ltr">Last year my Dale A (Griffin?=
) radiator cracked and I replaced it with this one from BMR in the UK:<br>=
=C2=A0<br><a href=3D"https://www.motorsportradiators.co.uk/store/Sunbeam-Ti=
ger-Aluminium-Radiator-p146886570" target=3D"_blank">https://www.<wbr>motor=
sportradiators.co.uk/<wbr>store/Sunbeam-Tiger-Aluminium-<wbr>Radiator-p1468=
86570</a><br><br>Not really used the=C2=A0car since except a=C2=A0couple of=
 short trips.<div><br>This week I was going to take the tiger out for a run=
 over some mountain passes but after about 30 minutes, no traffic, it was r=
unning at well over 100C / ~230F.=C2=A0 I returned home and checked everyth=
ing over.<br><br>1. Full of fresh Evans waterless coolant. =C2=A0<br>2. gau=
ge is mechanical<br>3. horn holes blocked, along with gap between rad and c=
rossmember.<br>4. fan shroud in place with 13&quot; flex fan on water pump =
hub.<br>5. doesn&#39;t overheat at idle even when left running for 30 minut=
es.<br><br>I&#39;ve NEVER had a problem with overheating at speed before. =
=C2=A0the only issues I had were at idle=C2=A0or in traffic / slow speed bu=
t even those had been solved by all the above. =C2=A0engine is a 490hp 347,=
 but wasn&#39;t a problem before.<br><br>everything is pointing at the BMR =
radiator just being a bit crap and not doing as good a job as the Dale rad.=
 =C2=A0anyone running one of these?<br></div><div><br></div></div>
______________________________<wbr>_________________<br>
<br>
<a href=3D"mailto:[email-masked]" target=3D"_blank">[email-masked]=
m.net</a><br>
<br>
et=3D"_blank">http://www.team.net/donate.<wbr>html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/tigers" rel=3D"noreferrer=
" target=3D"_blank">http://www.team.net/pipermail/<wbr>tigers</a> <a href=
=3D"http://autox.team.net/archive" rel=3D"noreferrer" target=3D"_blank">htt=
p://autox.team.net/archive</a><br>
<br>
Unsubscribe: <a href=3D"http://autox.team.net/mailman/options/tigers/michae=
[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://autox.team.=
net/mailman/<wbr>options/tigers/michael.s.king@<wbr>gmail.com</a><br>
<br>
<br>
</blockquote></div><br clear=3D"all"><div><br></div>-- <br><div dir=3D"ltr"=
>Regards<br><br>Michael King</div>
</blockquote></div>
</blockquote></div><br><br>-- <br>Regards<br><br>Michael King<br>

--0000000000008534d005c624cef4--

--===============0913906000047453575==
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[email-masked]

--===============0913906000047453575==--

---

From: Owain Lloyd <[email-masked]>
Date: Fri, 2 Jul 2021 22:26:45 +0200

--===============1866584692291633770==

--000000000000e3313705c629c6e0
Content-Transfer-Encoding: quoted-printable

Will reply in more detail tomorrow - but that may be important.  Thanks and
good thinking.

I forgot I also changed the lower hose because it was a bit chafed.  Tried
to install a sprinkler spring but it was a bit too stiff and I couldn=E2=80=
=99t get
it fully in.  So left it out.  That said I wasn=E2=80=99t revving high.  It=
=E2=80=99s super
long geared and has so much power at 2500 rpm.

I=E2=80=99m reluctant to try diluting with 50% water because there=E2=80=99=
s no turning
back at that point.  This engine has never seen water.

On Fri, 2 Jul 2021 at 16:31, michael king <[email-masked]> wrote:

> Did you change the lower radiator hose? Does it have a spring in it to
> stop it collapsing and restricting at higher rpm? That will cause issues =
at
> the radiator and not pulling properly ( though that should more be an idl=
e
> issue than on the run )
>
> What is the fin density and how many cores... Maybe its not getting as
> much air passing cleanly through and not dissipating as well as the
> fluidyne.
>
>> after all), but the advantages in terms of lack of corrosion (and lack o=
f
>> temp - no problems - fueling perfect) but it reaches a point where you j=
ust
>> don't want the engine too hot.  iron block, aluminium heads and pistons =
-
>>> The Griffin ones were a separate company and IIRC had the glued togethe=
r
>>> that the coolant runs hotter, but that it doesn't boil, so i guess to a=
sk:
>>> Apart from it registering physically hotter, was it suffering any
>>> adverse effects?
>>>> https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminium-Ra=
diator-p146886570
>>>> This week I was going to take the tiger out for a run over some
>>>> mountain passes but after about 30 minutes, no traffic, it was running=
 at
>>>> well over 100C / ~230F.  I returned home and checked everything over.
>>>>
>>>> issues I had were at idle or in traffic / slow speed but even those ha=
d
>>>> been solved by all the above.  engine is a 490hp 347, but wasn't a pro=
blem
>>>> before.
>>>>
>>>> everything is pointing at the BMR radiator just being a bit crap and
>>>> not doing as good a job as the Dale rad.  anyone running one of these?
>>>>
>>>>
>>>>

--000000000000e3313705c629c6e0
Content-Transfer-Encoding: quoted-printable

<div><div><div dir=3D"auto">Will reply in more detail tomorrow - but that m=
ay be important.=C2=A0 Thanks and good thinking.</div><div dir=3D"auto"><br=
></div><div dir=3D"auto">I forgot I also changed the lower hose because it =
was a bit chafed.=C2=A0 Tried to install a sprinkler spring but it was a bi=
t too stiff and I couldn=E2=80=99t get it fully in.=C2=A0 So left it out.=
=C2=A0 That said I wasn=E2=80=99t revving high.=C2=A0 It=E2=80=99s super lo=
ng geared and has so much power at 2500 rpm.</div><div dir=3D"auto"><br></d=
iv><div dir=3D"auto">I=E2=80=99m reluctant to try diluting with 50% water b=
ecause there=E2=80=99s no turning back at that point.=C2=A0 This engine has=
 never seen water.</div><div dir=3D"auto"><br></div></div></div><div><div><=
div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, 2 J=
ul 2021 at 16:31, michael king &lt;<a href=3D"mailto:[email-masked]=
om" target=3D"_blank">[email-masked]</a>&gt; wrote:<br></div><blo=
ckquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left=
-width:1px;border-left-style:solid;padding-left:1ex;border-left-color:rgb(2=
04,204,204)">Owain,<div><br></div><div>Were there any other changes you mad=
e when swapping the radiator out?</div><div><br></div><div>Did you change t=
he lower radiator hose? Does it have a spring in it to stop it collapsing a=
nd restricting at higher rpm? That will cause issues at speed but not idle=
=C2=A0</div><div><br></div><div>The gauge being mechanical rules out usual =
sender/ earth issues.</div><div><br></div><div>What depth is the core on th=
e new rad v old one, maybe fan is to close to the radiator and not pulling =
properly ( though that should more be an idle issue than on the run )=C2=A0=
</div><div><br></div><div>What is the fin density and how many cores... May=
be its not getting as much air passing cleanly through and not dissipating =
as well as the fluidyne.</div><div><br></div><div>Do you run an electric fa=
n? I once had my car overheat as i had the wires reversed and the fan was s=
pinning reverse and pushing air away from the grill whwn i came on... But a=
gain....more an issue at idle.</div><div><br><br>On Friday, 2 July 2021, Ow=
ain Lloyd &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank">ow=
[email-masked]</a>&gt; wrote:<br><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:soli=
d;padding-left:1ex;border-left-color:rgb(204,204,204)"><div dir=3D"ltr">Flu=
idyne - right.<div>indeed.=C2=A0 there is no pressure increase at that temp=
erature with Evans.=C2=A0 you can literally=C2=A0remove the cap with your b=
are hand.=C2=A0=C2=A0<div>the specific heat capacity isn&#39;t quite as goo=
d (it&#39;s hard to beat water after all), but the advantages in terms of l=
ack of corrosion (and lack of expansion) are worth that for me.</div><div>t=
he point is that i ran Evans before with the Dale rad and it never ran that=
 hot.=C2=A0 it was running fine at the high temp (I drove it home at that t=
emp - no problems - fueling perfect) but it reaches a point where you just =
don&#39;t want the engine too hot.=C2=A0 iron=C2=A0block, aluminium heads a=
nd pistons - the hotter it gets the more the expansion differences will bec=
ome.</div></div></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=
=3D"gmail_attr">On Fri, Jul 2, 2021 at 12:23 PM michael king &lt;<a href=3D=
"mailto:[email-masked]" target=3D"_blank">[email-masked]=
m</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin=
:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;padding-le=
ft:1ex;border-left-color:rgb(204,204,204)"><div dir=3D"ltr">Hey Owain,<div>=
<br><div>Not sure about the BMR, but the Dales ones were actually Fluidyne =
radiators.=C2=A0</div><div><br></div><div>The Griffin ones were a separate =
company and IIRC had the glued together cores.</div><div><br></div><div>I h=
ear different things about evans.. one of the things i have heard=C2=A0is t=
hat the coolant runs hotter, but that it doesn&#39;t=C2=A0boil,=C2=A0so i g=
uess to ask:</div><div>Apart from it registering physically hotter, was it =
suffering any adverse effects?</div><div>Did it start vaporising the fuel?<=
/div><div>Did it start running rough?</div><div>Did it puke the coolant?</d=
iv><div><br></div><div><br></div></div></div><br><div class=3D"gmail_quote"=
><div dir=3D"ltr" class=3D"gmail_attr">On Fri, 2 Jul 2021 at 17:54, Owain L=
loyd via Tigers &lt;<a href=3D"mailto:[email-masked]" target=3D"_bla=
nk">[email-masked]</a>&gt; wrote:<br></div><blockquote class=3D"gmai=
l_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left-width:1px;border-lef=
t-style:solid;padding-left:1ex;border-left-color:rgb(204,204,204)"><div dir=
=3D"ltr">Last year my Dale A (Griffin?) radiator cracked and I replaced it =
with this one from BMR in the UK:<br>=C2=A0<br><a href=3D"https://www.motor=
sportradiators.co.uk/store/Sunbeam-Tiger-Aluminium-Radiator-p146886570" tar=
get=3D"_blank">https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Al=
uminium-Radiator-p146886570</a><br><br>Not really used the=C2=A0car since e=
xcept a=C2=A0couple of short trips.<div><br>This week I was going to take t=
he tiger out for a run over some mountain passes but after about 30 minutes=
, no traffic, it was running at well over 100C / ~230F.=C2=A0 I returned ho=
me and checked everything over.<br><br>1. Full of fresh Evans waterless coo=
lant. =C2=A0<br>2. gauge is mechanical<br>3. horn holes blocked, along with=
 gap between rad and crossmember.<br>4. fan shroud in place with 13&quot; f=
lex fan on water pump hub.<br>5. doesn&#39;t overheat at idle even when lef=
t running for 30 minutes.<br><br>I&#39;ve NEVER had a problem with overheat=
ing at speed before. =C2=A0the only issues I had were at idle=C2=A0or in tr=
affic / slow speed but even those had been solved by all the above. =C2=A0e=
ngine is a 490hp 347, but wasn&#39;t a problem before.<br><br>everything is=
 pointing at the BMR radiator just being a bit crap and not doing as good a=
 job as the Dale rad. =C2=A0anyone running one of these?<br></div><div><br>=
</div></div><br><br>_______________________________________________<br><br>=
<br><br><br><br><a href=3D"mailto:[email-masked]" target=3D"_blank">=
[email-masked]</a><br><br><br><br><br><br>Donate: <a href=3D"http://=
www.team.net/donate.html" rel=3D"noreferrer" target=3D"_blank">http://www.t=
eam.net/donate.html</a><br><br><br>Archive: <a href=3D"http://www.team.net/=
pipermail/tigers" rel=3D"noreferrer" target=3D"_blank">http://www.team.net/=
pipermail/tigers</a> <a href=3D"http://autox.team.net/archive" rel=3D"noref=
errer" target=3D"_blank">http://autox.team.net/archive</a><br><br><br><br><=
br><br>Unsubscribe: <a href=3D"http://autox.team.net/mailman/options/tigers=
/[email-masked]" rel=3D"noreferrer" target=3D"_blank">http://auto=
x.team.net/mailman/options/tigers/[email-masked]</a><br><br><br><=
br><br><br><br><br><br></blockquote></div><br clear=3D"all"><div><br></div>=
-- <br><div dir=3D"ltr">Regards<br><br>Michael King</div><br><br></blockquo=
te></div><br><br></blockquote></div><br><br>-- <br>Regards<br><br>Michael K=
ing<br><br><br></blockquote></div></div><br><br></div>

--000000000000e3313705c629c6e0--

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[email-masked]

--===============1866584692291633770==--

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From: Buck Trippel via Tigers <[email-masked]>
Date: Fri, 2 Jul 2021 13:50:33 -0700

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You could try carefully draining all the Evans so that it could be =
preserved/reused. I spent $$$ on mine.

=20

Then you could test with water to gather data.=20

=20

If you want to return to Evans you can flush with a propylene glycol =
coolant like =E2=80=9CSierra=E2=80=9D. (Not too easy to get at your =
=E2=80=9Clocal=E2=80=9D parts store, Owain?) Then you could reinstall =
the Evans.

=20

bt

=20

From: Tigers <[email-masked]> On Behalf Of Owain Lloyd
Sent: Friday, July 2, 2021 1:27 PM
To: michael king <[email-masked]>
Cc: Tiger Talk List Tiger <[email-masked]>
Subject: Re: [Tigers] BMR radiator

=20

Will reply in more detail tomorrow - but that may be important.  Thanks =
and good thinking.

=20

I forgot I also changed the lower hose because it was a bit chafed.  =
Tried to install a sprinkler spring but it was a bit too stiff and I =
couldn=E2=80=99t get it fully in.  So left it out.  That said I =
wasn=E2=80=99t revving high.  It=E2=80=99s super long geared and has so =
much power at 2500 rpm.

=20

I=E2=80=99m reluctant to try diluting with 50% water because =
there=E2=80=99s no turning back at that point.  This engine has never =
seen water.

=20

On Fri, 2 Jul 2021 at 16:31, michael king <[email-masked] =

Owain,

=20

=20

Did you change the lower radiator hose? Does it have a spring in it to =
stop it collapsing and restricting at higher rpm? That will cause issues =
at speed but not idle=20

=20

=20

What depth is the core on the new rad v old one, maybe fan is to close =
to the radiator and not pulling properly ( though that should more be an =
idle issue than on the run )=20

=20

What is the fin density and how many cores... Maybe its not getting as =
much air passing cleanly through and not dissipating as well as the =
fluidyne.

=20

Do you run an electric fan? I once had my car overheat as i had the =
wires reversed and the fan was spinning reverse and pushing air away =
from the grill whwn i came on... But again....more an issue at idle.

On Friday, 2 July 2021, Owain Lloyd <[email-masked] =

Fluidyne - right.

=20

Hey Owain,

=20

=20

=20

Did it puke the coolant?

=20

=20

=20

=20

Unsubscribe: =

=20

--=20

Regards

Michael King

=20

=20

--=20
Regards

Michael King

=20

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vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal>You could try carefully =
draining all the Evans so that it could be preserved/reused. I spent $$$ =
on mine.<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>Then you could test with water to gather data. =
<o:p></o:p></p><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>If you want to return to Evans you can flush with a =
propylene glycol coolant like =E2=80=9CSierra=E2=80=9D. (Not too easy to =
get at your =E2=80=9Clocal=E2=80=9D parts store, Owain?) Then you could =
reinstall the Evans.<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p =
class=3DMsoNormal>bt<o:p></o:p></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b>From:</b> Tigers =
&lt;[email-masked]&gt; <b>On Behalf Of </b>Owain =
Lloyd<br><b>Sent:</b> Friday, July 2, 2021 1:27 PM<br><b>To:</b> michael =
king &lt;[email-masked]&gt;<br><b>Cc:</b> Tiger Talk List =
Tiger &lt;[email-masked]&gt;<br><b>Subject:</b> Re: [Tigers] BMR =
radiator<o:p></o:p></p></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><div><p =
class=3DMsoNormal>Will reply in more detail tomorrow - but that may be =
important.&nbsp; Thanks and good thinking.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p class=3DMsoNormal>I =
forgot I also changed the lower hose because it was a bit chafed.&nbsp; =
Tried to install a sprinkler spring but it was a bit too stiff and I =
couldn=E2=80=99t get it fully in.&nbsp; So left it out.&nbsp; That said =
I wasn=E2=80=99t revving high.&nbsp; It=E2=80=99s super long geared and =
has so much power at 2500 rpm.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>I=E2=80=99m reluctant to try diluting with 50% water =
because there=E2=80=99s no turning back at that point.&nbsp; This engine =
has never seen water.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></div></div><div><div><div><=
div><p class=3DMsoNormal>On Fri, 2 Jul 2021 at 16:31, michael king =
&lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><p =
class=3DMsoNormal>Owain,<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Were there any other changes you made when swapping =
the radiator out?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Did you change the lower radiator hose? Does it have a =
spring in it to stop it collapsing and restricting at higher rpm? That =
will cause issues at speed but not =
idle&nbsp;<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>The gauge being mechanical rules out usual sender/ =
earth issues.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>What depth is the core on the new rad v old one, maybe =
fan is to close to the radiator and not pulling properly ( though that =
should more be an idle issue than on the run =
)&nbsp;<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>What is the fin density and how many cores... Maybe =
its not getting as much air passing cleanly through and not dissipating =
as well as the fluidyne.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Do you run an electric fan? I once had my car overheat =
as i had the wires reversed and the fan was spinning reverse and pushing =
air away from the grill whwn i came on... But again....more an issue at =
idle.<o:p></o:p></p></div><div><p class=3DMsoNormal><br><br>On Friday, 2 =
July 2021, Owain Lloyd &lt;<a href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; =
wrote:<o:p></o:p></p><blockquote style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><p =
class=3DMsoNormal>Fluidyne - right.<o:p></o:p></p><div><p =
class=3DMsoNormal>indeed.&nbsp; there is no pressure increase at that =
temperature with Evans.&nbsp; you can literally&nbsp;remove the cap with =
your bare hand.&nbsp;&nbsp;<o:p></o:p></p><div><p class=3DMsoNormal>the =
specific heat capacity isn't quite as good (it's hard to beat water =
after all), but the advantages in terms of lack of corrosion (and lack =
of expansion) are worth that for me.<o:p></o:p></p></div><div><p =
class=3DMsoNormal>the point is that i ran Evans before with the Dale rad =
and it never ran that hot.&nbsp; it was running fine at the high temp (I =
drove it home at that temp - no problems - fueling perfect) but it =
reaches a point where you just don't want the engine too hot.&nbsp; =
iron&nbsp;block, aluminium heads and pistons - the hotter it gets the =
more the expansion differences will =
become.<o:p></o:p></p></div></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMsoNormal>On =
Fri, Jul 2, 2021 at 12:23 PM michael king &lt;<a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=3DMsoNormal>Hey =
Owain,<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal>Not =
sure about the BMR, but the Dales ones were actually Fluidyne =
radiators.&nbsp;<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>The Griffin ones were a separate company and IIRC had =
the glued together cores.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p class=3DMsoNormal>I =
hear different things about evans.. one of the things i have =
heard&nbsp;is that the coolant runs hotter, but that it =
doesn't&nbsp;boil,&nbsp;so i guess to ask:<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Apart from it registering physically hotter, was it =
suffering any adverse effects?<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Did it start vaporising the =
fuel?<o:p></o:p></p></div><div><p class=3DMsoNormal>Did it start running =
rough?<o:p></o:p></p></div><div><p class=3DMsoNormal>Did it puke the =
coolant?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMsoNormal>On =
Fri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers &lt;<a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a>&gt; =
wrote:<o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in =
6.0pt;margin-left:4.8pt;margin-right:0in'><div><p class=3DMsoNormal>Last =
year my Dale A (Griffin?) radiator cracked and I replaced it with this =
one from BMR in the UK:<br>&nbsp;<br><a =
href=3D"https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Alumini=
um-Radiator-p146886570" =
target=3D"_blank">https://www.motorsportradiators.co.uk/store/Sunbeam-Tig=
er-Aluminium-Radiator-p146886570</a><br><br>Not really used the&nbsp;car =
since except a&nbsp;couple of short trips.<o:p></o:p></p><div><p =
class=3DMsoNormal><br>This week I was going to take the tiger out for a =
run over some mountain passes but after about 30 minutes, no traffic, it =
was running at well over 100C / ~230F.&nbsp; I returned home and checked =
everything over.<br><br>1. Full of fresh Evans waterless coolant. =
&nbsp;<br>2. gauge is mechanical<br>3. horn holes blocked, along with =
gap between rad and crossmember.<br>4. fan shroud in place with 13&quot; =
flex fan on water pump hub.<br>5. doesn't overheat at idle even when =
left running for 30 minutes.<br><br>I've NEVER had a problem with =
overheating at speed before. &nbsp;the only issues I had were at =
idle&nbsp;or in traffic / slow speed but even those had been solved by =
all the above. &nbsp;engine is a 490hp 347, but wasn't a problem =
before.<br><br>everything is pointing at the BMR radiator just being a =
bit crap and not doing as good a job as the Dale rad. &nbsp;anyone =
running one of these?<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><br><br>__________________________________=
_____________<br><br><br><br><br><br><a =
href=3D"mailto:[email-masked]" =
target=3D"_blank">[email-masked]</a><br><br><br><br><br><br>Donate=
: <a href=3D"http://www.team.net/donate.html" =
target=3D"_blank">http://www.team.net/donate.html</a><br><br><br>Archive:=
 <a href=3D"http://www.team.net/pipermail/tigers" =
target=3D"_blank">http://www.team.net/pipermail/tigers</a> <a =
href=3D"http://autox.team.net/archive" =
target=3D"_blank">http://autox.team.net/archive</a><br><br><br><br><br><b=
r>Unsubscribe: <a =
href=3D"http://autox.team.net/mailman/options/tigers/michael.s.king@gmail=
.com" =
target=3D"_blank">http://autox.team.net/mailman/options/tigers/michael.s.=
[email-masked]</a><br><br><br><br><br><br><br><br><o:p></o:p></p></blockq=
uote></div><p class=3DMsoNormal><br clear=3Dall><o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><p class=3DMsoNormal>-- =
<o:p></o:p></p><div><p class=3DMsoNormal>Regards<br><br>Michael =
King<o:p></o:p></p></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><o:p>&nbsp;</o:p></p></blockquote></div><p=
 class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><o:p>&nbsp;</o:p></p></blockquote></div><p=
 class=3DMsoNormal style=3D'margin-bottom:12.0pt'><br><br>-- =
<br>Regards<br><br>Michael =
King<br><br><o:p></o:p></p></blockquote></div></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><o:p>&nbsp;</o:p></p></div></div></body></=
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[email-masked]

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---

From: Jim B via Tigers <[email-masked]>
Date: Fri, 2 Jul 2021 15:26:40 -0700

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Just chiming in on the radiator hose. I have had that happen where the =
hose collapses under load. It doesn=E2=80=99t take much acceleration to =
make it collapse. I think that would be my first item on the to do list. =
I think auto parts stores sell em. It=E2=80=99s been years and my memory =
is a little fuzzy though. I do remember having to cut it down to size. =
Could be I bought a hose that had on in it and then modified it for my =
application. Good luck.
Cheers
Jim B.

> On Jul 2, 2021, at 1:26 PM, Owain Lloyd <[email-masked]> wrote:
>=20
> Will reply in more detail tomorrow - but that may be important.  =
Thanks and good thinking.
Tried to install a sprinkler spring but it was a bit too stiff and I =
couldn=E2=80=99t get it fully in.  So left it out.  That said I wasn=E2=80=
=99t revving high.  It=E2=80=99s super long geared and has so much power =
at 2500 rpm.
>=20
> I=E2=80=99m reluctant to try diluting with 50% water because there=E2=80=
=99s no turning back at that point.  This engine has never seen water.
> the specific heat capacity isn't quite as good (it's hard to beat =
water after all), but the advantages in terms of lack of corrosion (and =
lack of expansion) are worth that for me.
> the point is that i ran Evans before with the Dale rad and it never =
ran that hot.  it was running fine at the high temp (I drove it home at =
that temp - no problems - fueling perfect) but it reaches a point where =
you just don't want the engine too hot.  iron block, aluminium heads and =
pistons - the hotter it gets the more the expansion differences will =
become.
radiators.=20
>=20
> The Griffin ones were a separate company and IIRC had the glued =
together cores.
>=20
> I hear different things about evans.. one of the things i have heard =
is that the coolant runs hotter, but that it doesn't boil, so i guess to =
adverse effects?
this one from BMR in the UK:
> =
https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminium-Radiat=
or-p146886570 =
<https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminium-Radia=
tor-p146886570>
> This week I was going to take the tiger out for a run over some =
mountain passes but after about 30 minutes, no traffic, it was running =
at well over 100C / ~230F.  I returned home and checked everything over.
>=20
> everything is pointing at the BMR radiator just being a bit crap and =
> Donate: http://www.team.net/donate.html =
<http://www.team.net/donate.html>
> Archive: http://www.team.net/pipermail/tigers =
<http://www.team.net/pipermail/tigers> http://autox.team.net/archive =
<http://autox.team.net/archive>
> Unsubscribe: =
http://autox.team.net/mailman/options/tigers/[email-masked] =
<http://autox.team.net/mailman/options/tigers/[email-masked]>
> Unsubscribe: =
http://autox.team.net/mailman/options/tigers/[email-masked]

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Content-Transfer-Encoding: quoted-printable
	charset=utf-8

<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><span=
 style=3D"font-size: 14px;" class=3D"">Just&nbsp;chiming in on the =
radiator hose. I have had that happen where the hose collapses under =
load. It&nbsp;doesn=E2=80=99t take much acceleration to make it =
collapse. I think that would be my first item on the to do list. I =
think&nbsp;auto parts&nbsp;stores sell em. It=E2=80=99s been years and =
my memory is a little fuzzy though. I do remember having to cut it down =
to size. Could be I bought a hose that had on in it and then modified it =
for my application. Good luck.</span><div class=3D""><span =
style=3D"font-size: 14px;" class=3D"">Cheers</span></div><div =
class=3D""><span style=3D"font-size: 14px;" class=3D"">Jim B.<br =
class=3D""></span><div><br class=3D""><blockquote type=3D"cite" =
class=3D""><div class=3D"">On Jul 2, 2021, at 1:26 PM, Owain Lloyd =
&lt;<a href=3D"mailto:[email-masked]" =
class=3D"">[email-masked]</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div class=3D""><div =
class=3D""><div dir=3D"auto" class=3D"">Will reply in more detail =
tomorrow - but that may be important.&nbsp; Thanks and good =
thinking.</div><div dir=3D"auto" class=3D""><br class=3D""></div><div =
dir=3D"auto" class=3D"">I forgot I also changed the lower hose because =
it was a bit chafed.&nbsp; Tried to install a sprinkler spring but it =
was a bit too stiff and I couldn=E2=80=99t get it fully in.&nbsp; So =
left it out.&nbsp; That said I wasn=E2=80=99t revving high.&nbsp; It=E2=80=
=99s super long geared and has so much power at 2500 rpm.</div><div =
dir=3D"auto" class=3D""><br class=3D""></div><div dir=3D"auto" =
class=3D"">I=E2=80=99m reluctant to try diluting with 50% water because =
there=E2=80=99s no turning back at that point.&nbsp; This engine has =
never seen water.</div><div dir=3D"auto" class=3D""><br =
class=3D""></div></div></div><div class=3D""><div class=3D""><div =
class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri, 2 =
Jul 2021 at 16:31, michael king &lt;<a =
href=3D"mailto:[email-masked]" target=3D"_blank" =
class=3D"">[email-masked]</a>&gt; wrote:<br =
class=3D""></div><blockquote class=3D"gmail_quote" style=3D"margin:0px =
0px 0px =
0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;borde=
r-left-color:rgb(204,204,204)">Owain,<div class=3D""><br =
class=3D""></div><div class=3D"">Were there any other changes you made =
when swapping the radiator out?</div><div class=3D""><br =
class=3D""></div><div class=3D"">Did you change the lower radiator hose? =
Does it have a spring in it to stop it collapsing and restricting at =
higher rpm? That will cause issues at speed but not idle&nbsp;</div><div =
class=3D""><br class=3D""></div><div class=3D"">The gauge being =
mechanical rules out usual sender/ earth issues.</div><div class=3D""><br =
class=3D""></div><div class=3D"">What depth is the core on the new rad v =
old one, maybe fan is to close to the radiator and not pulling properly =
( though that should more be an idle issue than on the run =
)&nbsp;</div><div class=3D""><br class=3D""></div><div class=3D"">What =
is the fin density and how many cores... Maybe its not getting as much =
air passing cleanly through and not dissipating as well as the =
fluidyne.</div><div class=3D""><br class=3D""></div><div class=3D"">Do =
you run an electric fan? I once had my car overheat as i had the wires =
reversed and the fan was spinning reverse and pushing air away from the =
grill whwn i came on... But again....more an issue at idle.</div><div =
class=3D""><br class=3D""><br class=3D"">On Friday, 2 July 2021, Owain =
Lloyd &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank" =
class=3D"">[email-masked]</a>&gt; wrote:<br class=3D""><blockquote =
class=3D"gmail_quote" style=3D"margin:0px 0px 0px =
0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;borde=
r-left-color:rgb(204,204,204)"><div dir=3D"ltr" class=3D"">Fluidyne - =
right.<div class=3D"">indeed.&nbsp; there is no pressure increase at =
that temperature with Evans.&nbsp; you can literally&nbsp;remove the cap =
with your bare hand.&nbsp;&nbsp;<div class=3D"">the specific heat =
capacity isn't quite as good (it's hard to beat water after all), but =
the advantages in terms of lack of corrosion (and lack of expansion) are =
worth that for me.</div><div class=3D"">the point is that i ran Evans =
before with the Dale rad and it never ran that hot.&nbsp; it was running =
fine at the high temp (I drove it home at that temp - no problems - =
fueling perfect) but it reaches a point where you just don't want the =
engine too hot.&nbsp; iron&nbsp;block, aluminium heads and pistons - the =
hotter it gets the more the expansion differences will =
become.</div></div></div><br class=3D""><div class=3D"gmail_quote"><div =
dir=3D"ltr" class=3D"gmail_attr">On Fri, Jul 2, 2021 at 12:23 PM michael =
king &lt;<a href=3D"mailto:[email-masked]" target=3D"_blank" =
class=3D"">[email-masked]</a>&gt; wrote:<br =
class=3D""></div><blockquote class=3D"gmail_quote" style=3D"margin:0px =
0px 0px =
0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;borde=
r-left-color:rgb(204,204,204)"><div dir=3D"ltr" class=3D"">Hey =
Owain,<div class=3D""><br class=3D""><div class=3D"">Not sure about the =
BMR, but the Dales ones were actually Fluidyne =
radiators.&nbsp;</div><div class=3D""><br class=3D""></div><div =
class=3D"">The Griffin ones were a separate company and IIRC had the =
glued together cores.</div><div class=3D""><br class=3D""></div><div =
class=3D"">I hear different things about evans.. one of the things i =
have heard&nbsp;is that the coolant runs hotter, but that it =
doesn't&nbsp;boil,&nbsp;so i guess to ask:</div><div class=3D"">Apart =
from it registering physically hotter, was it suffering any adverse =
effects?</div><div class=3D"">Did it start vaporising the =
fuel?</div><div class=3D"">Did it start running rough?</div><div =
class=3D"">Did it puke the coolant?</div><div class=3D""><br =
class=3D""></div><div class=3D""><br class=3D""></div></div></div><br =
class=3D""><div class=3D"gmail_quote"><div dir=3D"ltr" =
class=3D"gmail_attr">On Fri, 2 Jul 2021 at 17:54, Owain Lloyd via Tigers =
&lt;<a href=3D"mailto:[email-masked]" target=3D"_blank" =
class=3D"">[email-masked]</a>&gt; wrote:<br =
class=3D""></div><blockquote class=3D"gmail_quote" style=3D"margin:0px =
0px 0px =
0.8ex;border-left-width:1px;border-left-style:solid;padding-left:1ex;borde=
r-left-color:rgb(204,204,204)"><div dir=3D"ltr" class=3D"">Last year my =
Dale A (Griffin?) radiator cracked and I replaced it with this one from =
BMR in the UK:<br class=3D"">&nbsp;<br class=3D""><a =
href=3D"https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Aluminiu=
m-Radiator-p146886570" target=3D"_blank" =
class=3D"">https://www.motorsportradiators.co.uk/store/Sunbeam-Tiger-Alumi=
nium-Radiator-p146886570</a><br class=3D""><br class=3D"">Not really =
used the&nbsp;car since except a&nbsp;couple of short trips.<div =
class=3D""><br class=3D"">This week I was going to take the tiger out =
for a run over some mountain passes but after about 30 minutes, no =
traffic, it was running at well over 100C / ~230F.&nbsp; I returned home =
and checked everything over.<br class=3D""><br class=3D"">1. Full of =
fresh Evans waterless coolant. &nbsp;<br class=3D"">2. gauge is =
mechanical<br class=3D"">3. horn holes blocked, along with gap between =
rad and crossmember.<br class=3D"">4. fan shroud in place with 13" flex =
fan on water pump hub.<br class=3D"">5. doesn't overheat at idle even =
when left running for 30 minutes.<br class=3D""><br class=3D"">I've =
NEVER had a problem with overheating at speed before. &nbsp;the only =
issues I had were at idle&nbsp;or in traffic / slow speed but even those =
had been solved by all the above. &nbsp;engine is a 490hp 347, but =
wasn't a problem before.<br class=3D""><br class=3D"">everything is =
pointing at the BMR radiator just being a bit crap and not doing as good =
a job as the Dale rad. &nbsp;anyone running one of these?<br =
class=3D""></div><div class=3D""><br class=3D""></div></div><br =
class=3D""><br =
class=3D"">_______________________________________________<br =
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class=3D""><br class=3D""><br class=3D"">Archive: <a =
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class=3D""></blockquote></div><br clear=3D"all" class=3D""><div =
class=3D""><br class=3D""></div>-- <br class=3D""><div dir=3D"ltr" =
class=3D"">Regards<br class=3D""><br class=3D"">Michael King</div><br =
class=3D""><br class=3D""></blockquote></div><br class=3D""><br =
class=3D""></blockquote></div><br class=3D""><br class=3D"">-- <br =
class=3D"">Regards<br class=3D""><br class=3D"">Michael King<br =
class=3D""><br class=3D""><br class=3D""></blockquote></div></div><br =
class=3D""><br class=3D""></div>
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