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<p>An overflow reservoir will see to that. After the engine has
cooled down the expelled coolant will be sucked back into the rad.</p>
<p>Kees Oudesluijs<br>
</p>
<div class="moz-cite-prefix">Op 17-9-2018 om 18:00 schreef David
Nock BCS:<br>
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<div>The main purpose of putting a higher pressure cap is to
stop the continues loss of coolant after shutting the engine
down and the engine temp going up over the 212 point. By
putting a 10 or 13 max pressure cap you have raised the
boiling point 10 to 20 degrees thus stopping the coolant
loss.</div>
<div> </div>
<div>It wont do anything for the overheating.</div>
<div> </div>
<div>On your newer cars today they need a much higher pressure
cap because the run the engine temp much higher to reduce
emissions. I have seen some new Jaguars and Land Rovers that
are running a 25 lb cap. As well as cooling systems that you
can not fill up correctly with out using a vacuum type
filler. Due to the fact that there will be air pockets in
the cooling system that you can not remove any other way.</div>
<div> </div>
<div> </div>
<div> </div>
<div> </div>
<div> </div>
<div style="FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR:
#000000">David Nock<br>
British Car Specialists<br>
209-948-8767<br>
<a href="http://www.britishcarspecialists.com"
moz-do-not-send="true">www.britishcarspecialists.com</a></div>
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<div style="BACKGROUND: #f5f5f5">
<div style="font-color: black"><b>From:</b> <a
title="coudesluijs@chello.nl"
href="mailto:coudesluijs@chello.nl"
moz-do-not-send="true">Kees Oudesluijs</a> </div>
<div><b>Sent:</b> Monday, September 17, 2018 7:53 AM</div>
<div><b>To:</b> <a title="healeys@autox.team.net"
href="mailto:healeys@autox.team.net"
moz-do-not-send="true">healeys@autox.team.net</a> </div>
<div><b>Subject:</b> Re: [Healeys] Thermostats</div>
</div>
</div>
<div> </div>
</div>
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<p>7 Psi should be more than enough on these old engines.
Water pump seal may fail (as mentioned), so may the hoses
and the original style radiator if you operate under a
higher pressure. Modern cars can take much higher
pressures of 20Psi or more. If your cooling system is up
to scratch there should not be a problem. i.e. clean
system, radiator with enough capacity, thermostatically
controlled electric fan to keep things under control in
dense traffic and hot weather. The electric fan may not be
original but when these cars were new traffic conditions
were not as demanding as in these days. It just keeps you
out of trouble at very little costs and a bit of ingenuity
(breakers yard).<br>
</p>
<p>Kees Oudesluijs</p>
<p> </p>
<p> </p>
<div class="moz-cite-prefix">Op 17-9-2018 om 14:14 schreef
Michael Salter:<br>
</div>
<blockquote
cite="mid:BN6PR22MB085295BDEBD870CC855FDD61A11E0@BN6PR22MB0852.namprd22.prod.outlook.com"
type="cite">
<meta content="text/html; ">
Also, with respect to cooling system pressure, the water
pump seal in the 6 cylinder engines typically won't handle
much over 10 p.s.i.. M
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<div id="divRplyFwdMsg" dir="ltr"><font style="FONT-SIZE:
11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b>
Healeys <a class="moz-txt-link-rfc2396E"
href="mailto:healeys-bounces@autox.team.net"
moz-do-not-send="true">mailto:healeys-bounces@autox.team.net</a>
on behalf of David Nock <a
class="moz-txt-link-rfc2396E"
href="mailto:healeydoc@gmail.com"
moz-do-not-send="true">mailto:healeydoc@gmail.com</a><br>
<b>Sent:</b> Sunday, September 16, 2018 11:16:50 PM<br>
<b>To:</b> Linwood Rose<br>
<b>Cc:</b> Forum Healeys<br>
<b>Subject:</b> Re: [Healeys] Thermostats</font>
<div> </div>
</div>
<div>If you are using the alloy radiator you have a short
neck cap. Depending on the press’s app you are using you
can not use a bellows type thermostat. Because the
bellows will collapse if you use anything over 7 lbs.
Then the thermostat will close and the engine will
overheat. <br>
<br>
<div id="AppleMailSignature">Sent from my iPhone</div>
<div><br>
On Sep 16, 2018, at 7:19 AM, Linwood Rose <<a
href="mailto:linwoodrose@mac.com"
moz-do-not-send="true">linwoodrose@mac.com</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>I would like to go back to Steve Byers’ comment.
I am not so much concerned about my car overheating.
When the engine was rebuilt it was thoroughly
cleaned to get rid of all sludge. I run an aluminum
radiator, have built and installed air ducting for
improved flow. I do not have an electric fan.
<div> </div>
<div>My problem was that my engine ran cool and
would take quite a while to “warm up.” I think I
was using a 165 degree (or thereabouts)
non-sleeved thermostat. Robert Shaw as I recall.
So I wanted to get my engine up to 185-190 degrees
sooner. I went with one of the same AC sleeved
thermostats 82 degrees centigrade from Kees that
Steve used. The engine seems to be much happier
and gets to running temp more quickly.</div>
<div> </div>
<div>At least for my engine, a 160-165 degree
thermostat keeps things cool too long. In a
perfect world I would prefer David Nock’s bellows
thermostat but with a 185-190 degree opening.
Since that doesn’t seem to be available I think I
will stick with the AC unit and keep my eye on the
temp. Gauge.</div>
<div> </div>
<div>I am no authority on this. I am simply passing
along my experience. Am I understanding all of
this correctly? </div>
<div> </div>
<div>Thanks,</div>
<div>Lin<br>
<br>
<div id="AppleMailSignature">Sent from my iPhone</div>
<div><br>
On Sep 15, 2018, at 9:30 PM, Rossm <<a
href="mailto:rvmaylor@shaw.ca"
moz-do-not-send="true">rvmaylor@shaw.ca</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
<div>To be fair Michael, it is hot maybe three
days a year in Canada?:) . I left Calgary
yesterday for the Rendezvous and it was
snowing already. First time the hood
contraption on the BN6 has been up since last
September. <br>
<br>
<div id="AppleMailSignature">Sent from my
iPhone</div>
<div><br>
On Sep 15, 2018, at 10:50, Michael Salter
<<a
href="mailto:michael.salter@gmail.com"
moz-do-not-send="true">michael.salter@gmail.com</a>>
wrote:<br>
<br>
</div>
<blockquote type="cite">
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<div>Well I have watched this discussion
on sleeved thermostats for the last week
but now I just have to say. When the
sleeved thermostats went NLA, about 45
years ago, we resorted to installing
just plain old Stant 175 degree stats
and guess what ... not one complaint or
comment on running hotter or overheating
and absolutely no sign of any symptoms
of overheating on my own BJ8 even in the
hottest of ambient temperatures. It just
didn't happen!!! Just sayin'. M
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<div id="x_divRplyFwdMsg" dir="ltr"><font
style="FONT-SIZE: 11pt"
face="Calibri,
 sans-serif"
color="#000000"><b>From:</b> Healeys
<<a
href="mailto:healeys-bounces@autox.team.net"
moz-do-not-send="true">healeys-bounces@autox.team.net</a>>
on behalf of Rossm <<a
href="mailto:rvmaylor@shaw.ca"
moz-do-not-send="true">rvmaylor@shaw.ca</a>><br>
<b>Sent:</b> Saturday, September 15,
2018 10:35:32 AM<br>
<b>To:</b> Forum Healeys<br>
<b>Subject:</b> [Healeys]
Thermostats</font>
<div> </div>
</div>
</div>
<font size="2"><span style="FONT-SIZE:
11pt">
<div class="PlainText">Three sleeved
thermostats, one on the right 160
degrees, middle no idea, left is a
Smiths x85002s/86 (180F) and has
failed open. <br>
<br>
</div>
</span></font></div>
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