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Remember the job of the thermostat is not to COOL the engine. It is =
there to get the engine up to operating temperature as soon as possible. =
The radiator, fan, air ducts are there to maintain the engine =
temperature.
The sleeved thermostat is there to block a bypass in the cylinder head =
that is there to allow coolant to circulate when the thermostat is =
closed. If you use a non sleeved thermostat you will have part of the =
coolant NOT going thru the radiator thus causing the engine temp to run =
high.
Next how many lights and badges do you have on the front of your car. =
They will deflect some of the air going into the radiator.
David Nock
British Car Specialists
209-948-8767
www.britishcarspecialists.com
From: Roger Grace=20
Sent: Tuesday, September 11, 2018 3:44 PM
To: BJ8Healeys ; 'healeys'=20
Subject: Re: [Healeys] Thermostats
Steve,
Yes agree with your take on the 160 F thermostats. The only possible =
benefit is that if you start with a lower coolant temp, when you hit =
traffic, it will take longer before the dreaded over temp zone is =
approached.
As an aside, I have installed an oil temp gauge; very useful and a =
reminder just how long the engine (not coolant) takes to get up to temp. =
Trying to get in the habit of not going over 2000 RPM till OT is about =
120F =E2=80=93 often another 15-20 mins after the thermostat opens.=20
rg
From: BJ8Healeys=20
Sent: Monday, September 10, 2018 12:44 PM
To: 'healeys'=20
Subject: Re: [Healeys] Thermostats
Fred, I personally believe a 160-deg. F thermostat used in an effort to =
"cool down" a Healey is useless. A thermostat responds only to the =
temperature of the coolant flowing through it by opening up to increase =
coolant flow, and once it is open all the way at 160+, it is out of the =
loop and can't open further to cool more. I am on the NC coast where =
winters are mild. I once tried a 160 (non-sleeved) because I had one =
that someone gave me. My BJ8 ran so cold that winter that I actually =
had to block part of the radiator to raise it to anywhere near normal. =
Up there in the NC mountains, that would be even more of a problem for =
you.
I use a 187 F (86 C) New Old Stock AC sleeved thermostat (AC part number =
1572320) that I was able to score from lister Kees Oudesluijs. I =
installed it along with an upgraded core in the radiator at the same =
time, so I can't really say how much improvement the thermostat alone =
did; but since the modification my car runs consistently at 170 - 180 in =
the hot summers of the NC coast, except when in stop-and-go traffic when =
it might make it to 190 or a bit above. In winter, it runs at 160 - =
170. I can see the sleeve operate as the car warms up because the gauge =
will cycle between 160 and 190 until coolant temperature stabilizes. =
That can take up to 50 miles.
A friend placed an order later with Kees for several of the 190 F =
sleeved thermostats. I got one of those as a spare. Don't know if he =
has any left, or can get more. As far as I know, the only sleeved =
thermostats available from the usual suspects are 160s and I wouldn't =
waste my money on them.
I just Googled the AC part number and came up with this source:
https://tinyurl.com/y9c6n53h
Unfortunately, it does not post to the USA (but on the bright side, it =
offers free shipping!). Maybe you could work out a deal with a UK =
lister to buy one for you and ship it to you. =C2=A319.99 =3D $26.04=20
=20
Steve Byers
HBJ8L/36666
BJ8 Registry
AHCA Delegate at Large
Havelock, NC =20
=20
=20
From: Healeys [mailto:healeys-bounces@autox.team.net] On Behalf Of Fred =
Wescoe
Sent: Sunday, September 09, 2018 8:38 PM
To: healeys
Subject: [Healeys] Thermostats
=20
Listers,
=20
I have researched what I can of the archives and other sources and am =
still puzzled. I cannot find any real answers and direction on the =
question of which thermostat I should use in my 66 BJ8. Some answers =
indicate a sleeved thermostat and others say no sleeve. Some say a =
short sleeve and others say only the long sleeve works. Some answers =
indicate using a 160 degree thermostat while others propose 180 degrees =
and even 190 degrees. Some even say the Moss sleeved thermostat does =
not work.
=20
I am in North Carolina and drive the car most of the year. Right now =
the car has a non sleeved 190 degree thermostat. The car starts and =
needs to warm up, at idle, to almost full temp before it runs with no =
problems. Otherwise it spits, coughs and has no power. The car runs at =
about 190 degres except when I drive the mountains and of course stop =
and go traffic.
=20
What is the consensus of thoughts as we approach colder weather? And =
what are the sources and manufacturer for a good thermostat?
=20
Thanks for the help,
=20
Fred
66BJ8
Virus-free. www.avg.com =20
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<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: #000000">
<DIV>Remember the job of the thermostat is not to COOL the engine. It is =
there=20
to get the engine up to operating temperature as soon as possible. The =
radiator,=20
fan, air ducts are there to maintain the engine temperature.</DIV>
<DIV> </DIV>
<DIV>The sleeved thermostat is there to block a bypass in the cylinder =
head that=20
is there to allow coolant to circulate when the thermostat is closed. If =
you use=20
a non sleeved thermostat you will have part of the coolant NOT going =
thru the=20
radiator thus causing the engine temp to run high.</DIV>
<DIV> </DIV>
<DIV>Next how many lights and badges do you have on the front of your =
car. They=20
will deflect some of the air going into the radiator.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: =
#000000">David=20
Nock<BR>British Car=20
Specialists<BR>209-948-8767<BR>www.britishcarspecialists.com</DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Droggrace@telus.net=20
href=3D"mailto:roggrace@telus.net";>Roger Grace</A> </DIV>
<DIV><B>Sent:</B> Tuesday, September 11, 2018 3:44 PM</DIV>
<DIV><B>To:</B> <A title=3Dsbyers@ec.rr.com=20
href=3D"mailto:sbyers@ec.rr.com";>BJ8Healeys</A> ; <A =
title=3DHealeys@autox.team.net=20
href=3D"mailto:Healeys@autox.team.net";>'healeys'</A> </DIV>
<DIV><B>Subject:</B> Re: [Healeys] Thermostats</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Comic Sans MS'; COLOR: =
#000000">
<DIV>Steve,</DIV>
<DIV>Yes agree with your take on the 160 F thermostats. The only =
possible=20
benefit is that if you start with a lower coolant temp, when you hit =
traffic, it=20
will take longer before the dreaded over temp zone is approached.</DIV>
<DIV>As an aside, I have installed an oil temp gauge; very useful and a =
reminder=20
just how long the engine (not coolant) takes to get up to temp. Trying =
to get in=20
the habit of not going over 2000 RPM till OT is about 120F =E2=80=93 =
often another 15-20=20
mins after the thermostat opens. </DIV>
<DIV>rg</DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A=20
title=3Dsbyers@ec.rr.com>BJ8Healeys</A> </DIV>
<DIV><B>Sent:</B> Monday, September 10, 2018 12:44 PM</DIV>
<DIV><B>To:</B> <A title=3DHealeys@autox.team.net>'healeys'</A> </DIV>
<DIV><B>Subject:</B> Re: [Healeys] Thermostats</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV class=3DWordSection1>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>Fred, I=20
personally believe a 160-deg. F thermostat used in an effort to "cool =
down" a=20
Healey is useless. A thermostat responds only to the temperature =
of the=20
coolant flowing through it by opening up to increase coolant flow, and =
once it=20
is open all the way at 160+, it is out of the loop and can't open =
further to=20
cool more. I am on the NC coast where winters are mild. I =
once tried=20
a 160 (non-sleeved) because I had one that someone gave me. My BJ8 =
ran so=20
cold that winter that I actually had to block part of the radiator to =
raise it=20
to anywhere near normal. Up there in the NC mountains, that would =
be even=20
more of a problem for you.<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>I use a=20
187 F (86 C) New Old Stock AC sleeved thermostat (AC part number =
1572320) that I=20
was able to score from lister Kees Oudesluijs. I installed it =
along with=20
an upgraded core in the radiator at the same time, so I can't really say =
how=20
much improvement the thermostat alone did; but since the modification my =
car=20
runs consistently at 170 - 180 in the hot summers of the NC coast, =
except when=20
in stop-and-go traffic when it might make it to 190 or a bit =
above. In=20
winter, it runs at 160 - 170. I can see the sleeve operate as the =
car=20
warms up because the gauge will cycle between 160 and 190 until coolant=20
temperature stabilizes. That can take up to 50=20
miles.<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>A friend=20
placed an order later with Kees for several of the 190 F sleeved=20
thermostats. I got one of those as a spare. Don't know if he =
has any=20
left, or can get more. As far as I know, the only sleeved =
thermostats=20
available from the usual suspects are 160s and I wouldn't waste my money =
on=20
them.<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>I just=20
Googled the AC part number and came up with this =
source:<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><B><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'><A=20
href=3D"https://tinyurl.com/y9c6n53h";>https://tinyurl.com/y9c6n53h</A><o:=
p></o:p></SPAN></B></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>Unfortunately,=20
it does not post to the USA (but on the bright side, it offers free=20
shipping!). Maybe you could work out a deal with a UK lister to =
buy one=20
for you and ship it to you. =C2=A319.99 =3D $26.04 </SPAN><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'><o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'><o:p></o:p></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>Steve=20
Byers</SPAN><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: =
#002060'><o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>HBJ8L/36666</SPAN><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: =
#002060'><o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>BJ8=20
Registry</SPAN><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: =
#002060'><o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>AHCA=20
Delegate at Large</SPAN><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: =
#002060'><o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'>Havelock,=20
NC </SPAN><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: =
#002060'><o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Calibri","sans-serif"; COLOR: =
#002060'><o:p></o:p></SPAN> </P>
<P class=3DMsoNormal><SPAN=20
style=3D'FONT-SIZE: 11pt; FONT-FAMILY: "Comic Sans MS"; COLOR: =
#002060'><o:p></o:p></SPAN> </P>
<DIV=20
style=3D"BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; =
BORDER-BOTTOM: medium none; PADDING-BOTTOM: 0in; PADDING-TOP: 3pt; =
PADDING-LEFT: 0in; BORDER-LEFT: medium none; PADDING-RIGHT: 0in">
<P class=3DMsoNormal><B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: =
"Tahoma","sans-serif"'>From:</SPAN></B><SPAN=20
style=3D'FONT-SIZE: 10pt; FONT-FAMILY: "Tahoma","sans-serif"'> Healeys=20
[mailto:healeys-bounces@autox.team.net] <B>On Behalf Of </B>Fred=20
Wescoe<BR><B>Sent:</B> Sunday, September 09, 2018 8:38 PM<BR><B>To:</B>=20
healeys<BR><B>Subject:</B> [Healeys] =
Thermostats<o:p></o:p></SPAN></P></DIV>
<P class=3DMsoNormal><o:p></o:p> </P>
<DIV>
<P class=3DMsoNormal>Listers,<o:p></o:p></P>
<DIV>
<P class=3DMsoNormal><o:p></o:p> </P></DIV>
<DIV>
<P class=3DMsoNormal>I have researched what I can of the archives and =
other=20
sources and am still puzzled. I cannot find any real answers and =
direction=20
on the question of which thermostat I should use in my 66 BJ8. =
Some=20
answers indicate a sleeved thermostat and others say no sleeve. =
Some say a=20
short sleeve and others say only the long sleeve works. Some =
answers=20
indicate using a 160 degree thermostat while others propose 180 degrees =
and even=20
190 degrees. Some even say the Moss sleeved thermostat does not=20
work.<o:p></o:p></P></DIV>
<DIV>
<P class=3DMsoNormal><o:p></o:p> </P></DIV>
<DIV>
<P class=3DMsoNormal>I am in North Carolina and drive the car most of =
the=20
year. Right now the car has a non sleeved 190 degree =
thermostat. The=20
car starts and needs to warm up, at idle, to almost full temp before it =
runs=20
with no problems. Otherwise it spits, coughs and has no =
power. The=20
car runs at about 190 degres except when I drive the mountains and of =
course=20
stop and go traffic.<o:p></o:p></P></DIV>
<DIV>
<P class=3DMsoNormal><o:p></o:p> </P></DIV>
<DIV>
<P class=3DMsoNormal>What is the consensus of thoughts as we approach =
colder=20
weather? And what are the sources and manufacturer for a good=20
thermostat?<o:p></o:p></P></DIV>
<DIV>
<P class=3DMsoNormal><o:p></o:p> </P></DIV>
<DIV>
<P class=3DMsoNormal>Thanks for the help,<o:p></o:p></P></DIV>
<DIV>
<P class=3DMsoNormal><o:p></o:p> </P></DIV>
<DIV>
<P class=3DMsoNormal>Fred<o:p></o:p></P></DIV>
<DIV>
<P class=3DMsoNormal>66BJ8<o:p></o:p></P></DIV></DIV></DIV>
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