[Healeys] Thermostats

[Michael Salter]

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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From: Healeys <healeys-bounces at autox.team.net> on behalf of David Nock <healeydoc at gmail.com>
Sent: Sunday, September 16, 2018 11:16:50 PM
To: Linwood Rose
Cc: Forum Healeys
Subject: Re: [Healeys] Thermostats

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.

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On Sep 16, 2018, at 7:19 AM, Linwood Rose <linwoodrose at mac.com<mailto:linwoodrose at mac.com>> wrote:

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.

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.

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.

I am no authority on this. I am simply passing along my experience. Am I understanding all of this correctly?

Thanks,
Lin

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On Sep 15, 2018, at 9:30 PM, Rossm <rvmaylor at shaw.ca<mailto:rvmaylor at shaw.ca>> wrote:

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.

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On Sep 15, 2018, at 10:50, Michael Salter <michael.salter at gmail.com<mailto:michael.salter at gmail.com>> wrote:

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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From: Healeys <healeys-bounces at autox.team.net<mailto:healeys-bounces at autox.team.net>> on behalf of Rossm <rvmaylor at shaw.ca<mailto:rvmaylor at shaw.ca>>
Sent: Saturday, September 15, 2018 10:35:32 AM
To: Forum Healeys
Subject: [Healeys] Thermostats

Three sleeved thermostats, one on the right 160 degrees, middle no idea,  left is a Smiths x85002s/86 (180F) and has failed open.

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