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Dears FOters, re water pump upgrades : I do not think it is necessary, =
as long as you have a good OEM one.=20
My engine is fully prepped and ran an OEM pump with no issues for years. =
I now rebuilt this OEM pump with a new seal, resurfaced the face where =
the seal spins, cleaned and repacked the bearings with water proof =
grease and off we go for another 50 years.
=20
The problem with the stock repro pumps is that they may have slightly =
smaller vanes in the impeller (I noticed this on pumps sold by Moss in =
the 90s). This severely impacts the flow.
And at $30-50 each manufactured overseas you cannot expect much of close =
tolerances, steel shaft quality, etc.
Increased flow may actually not be an improvement : the greater flow (if =
it effectively is greater) may create cavitation and /or turbulences and =
air pockets, thus effectively reducing the cooling.=20
I experienced this in a Lotus Esprit engine where the previous owner had =
increased the speed of the pump by fitting a smaller pulley.
=20
And remember : the great Kas Kastner himself was running fully prepped =
engines with the stock pump (as far as I know).
=20
Cheers to all and have a great racing season !
=20
Alex Camoletti=20
=20
(Switzerland, 1959 3A)
=20
De : Fot [mailto:fot-bounces@autox.team.net] De la part de Phil Gott via =
Fot
Envoy=C3=A9 : jeudi 28 avril 2022 12:35
=C3=80 : fot@autox.team.net; enquiries@roadandtrack.net.au
Objet : Re: [Fot] TR water pump upgrade
=20
My own experience has been that some of these "upgraded" pumps such as =
one sold by Moss use a much smaller stud to hold the pulley on. Over =
time, this will break with potentially catastrophic results. (ask me =
how I know!)
=20
Phil Gott
-----Original Message-----
From: John H. Hasty via Fot <fot@autox.team.net>
To: Enquiries Road & Track <enquiries@roadandtrack.net.au>
Cc: FOT <fot@autox.team.net>
Sent: Wed, Apr 27, 2022 7:10 pm
Subject: Re: [Fot] TR water pump upgrade
Contact Brian Howlett @ BFE
Sent from my iPhone
> On Apr 27, 2022, at 7:02 PM, Enquiries Road & Track via Fot =
<fot@autox.team.net> wrote:
>=20
> =EF=BB=BF
> does anyone have real-world / hands-on experience with the supposed =
"upgrade" water pumps that used to be sold for the 4 cyl TR range??. My =
research suggests some used a different 6 vane impellor that have a =
taper top, so an insert was used in the pump housing to match this =
shape. some were just a 6 vane impellor with an otherwise stock pump.=20
>=20
> thanks
> terry
> Australia
>=20
>=20
> _______________________________________________
> fot@autox.team.net
>=20
> http://www.fot-racing.com <http://www.fot-racing.com/>=20
>=20
> Donate: http://www.team.net/donate.html
> Archive: http://autox.team.net/archive =
<http://autox.team.net/archive> http://www.team.net/pipermail/fot
> Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/jhasty@mhc-law.com
>=20
>=20
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com <http://www.fot-racing.com/>=20
Archive: http://autox.team.net/archive <http://autox.team.net/archive> =
http://www.team.net/pipermail/fot
http://autox.team.net/mailman/options/fot/vfracing@aol.com
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</o:shapelayout></xml><![endif]--></head><body lang=3DFR-CH link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'>Dears FOters, re =
water pump upgrades : I do not think it is necessary, as long as =
you have a good OEM one. <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'>My engine is =
fully prepped and ran an OEM pump with no issues for years. =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'>I now rebuilt =
this OEM pump with a new seal, resurfaced the face where the seal spins, =
cleaned and repacked the bearings with water proof grease and off we go =
for another 50 years.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'><o:p> </o:p><=
/span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'>The problem with =
the stock repro pumps is that they may have slightly smaller vanes in =
the impeller (I noticed this on pumps sold by Moss in the 90s). This =
severely impacts the flow.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'>And at $30-50 =
each manufactured overseas you cannot expect much of close tolerances, =
steel shaft quality, etc.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'>Increased flow =
may actually not be an improvement : the greater flow (if it =
effectively is greater) may create cavitation and /or turbulences and =
air pockets, thus effectively reducing the cooling. =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'>I experienced =
this in a Lotus Esprit engine where the previous owner had increased the =
speed of the pump by fitting a smaller pulley.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'><o:p> </o:p><=
/span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'>And =
remember : the great Kas Kastner himself was running fully prepped =
engines with the stock pump (as far as I know).<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'><o:p> </o:p><=
/span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'>Cheers to all and =
have a great racing season !<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'><o:p> </o:p><=
/span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'>Alex Camoletti =
<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'><o:p> </o:p><=
/span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'>(Switzerland, =
1959 3A)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-family:"Garamond","serif";color:#44546A'><o:p> </o:p><=
/span></p><p class=3DMsoNormal><b><span lang=3DFR =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>De :</s=
pan></b><span lang=3DFR =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Fot =
[mailto:fot-bounces@autox.team.net] <b>De la part de</b> Phil Gott via =
Fot<br><b>Envoy=C3=A9 :</b> jeudi 28 avril 2022 =
12:35<br><b>=C3=80 :</b> fot@autox.team.net; =
enquiries@roadandtrack.net.au<br><b>Objet :</b> Re: [Fot] TR water =
pump upgrade<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>M=
y own experience has been that some of these "upgraded" pumps =
such as one sold by Moss use a much smaller stud to hold the pulley on. =
Over time, this will break with potentially catastrophic results. =
(ask me how I know!)<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><=
o:p> </o:p></span></p></div><div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>P=
hil Gott<br><br><br>-----Original Message-----<br>From: John H. Hasty =
via Fot <fot@autox.team.net><br>To: Enquiries Road & Track =
<enquiries@roadandtrack.net.au><br>Cc: FOT =
<fot@autox.team.net><br>Sent: Wed, Apr 27, 2022 7:10 =
pm<br>Subject: Re: [Fot] TR water pump =
upgrade<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>C=
ontact Brian Howlett @ BFE<br><br>Sent from my iPhone<br><br>> On Apr =
27, 2022, at 7:02 PM, Enquiries Road & Track via Fot <<a =
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a>> =
wrote:<br>> <br>> =EF=BB=BF<br>> does anyone have real-world / =
hands-on experience with the supposed "upgrade" water pumps =
that used to be sold for the 4 cyl TR range??. My research suggests some =
used a different 6 vane impellor that have a taper top, so an insert was =
used in the pump housing to match this shape. some were just a 6 vane =
impellor with an otherwise stock pump. <br>> <br>> thanks<br>> =
terry<br>> Australia<br>> <br>> <br>> =
_______________________________________________<br>> <a =
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a><br>> =
<br>> <a href=3D"http://www.fot-racing.com/"; =
target=3D"_blank">http://www.fot-racing.com</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://autox.team.net/archive"; =
target=3D"_blank">http://autox.team.net/archive </a><a =
href=3D"http://www.team.net/pipermail/fot"; =
target=3D"_blank">http://www.team.net/pipermail/fot</a><br>> =
href=3D"http://autox.team.net/mailman/options/fot/jhasty@mhc-law.com"; =
target=3D"_blank">http://autox.team.net/mailman/options/fot/jhasty@mhc-la=
w.com</a><o:p></o:p></span></p><div id=3Dyqtfd80255><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><span =
style=3D'font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><=
br>> <br>> =
<br>_______________________________________________<br><a =
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a><br><br><a =
href=3D"http://www.fot-racing.com/"; =
target=3D"_blank">http://www.fot-racing.com</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://autox.team.net/archive"; =
target=3D"_blank">http://autox.team.net/archive </a><a =
href=3D"http://www.team.net/pipermail/fot"; =
target=3D"_blank">http://www.team.net/pipermail/fot</a><br>Unsubscribe/Ma=
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com</a><br><br><o:p></o:p></span></p></div></div></div></div></body></htm=
l>
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