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Join Date: Oct 1999
Location: Marietta, GA
Posts: 809
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Internal Thermostats
I have been chasing a high pressure leak and now believe it comes from my internal thermostat. I have already replaced my oil pressure sending unit, but after my last race found the same spray of oil in the engine bay.
My thermostat has a screw in the top that has a plastic washer made on to it. The O ring is in good shape so I suspect this screw to be leaking under pressure. Anyone know how to seal this thing? Thanks, neilca |
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11-19-2010, 03:05 AM
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What's the screw for?
Does it tighten down enough to put a crush washer under it? If not I'd put some Permatex thread sealer on it.
__________________
Pete 79 911SC RoW "Tornadoes come out of frikkin nowhere. One minute everything is all sunshine and puppies the next thing you know you've got flying cows".- Stomachmonkey |
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11-19-2010, 04:50 AM
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Join Date: Oct 2008
Location: Nash County, NC.
Posts: 8,526
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The screw was on the early cars into the early 70s. Get one without the screw should be easy.
Looks like the screw had something to do with adjusting the opening temp. Bruce |
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11-19-2010, 04:58 AM
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Join Date: Oct 2003
Location: Central Fla
Posts: 1,864
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leak
I have seen those leak before, Is it on an early 2.0 case ? If I were you and you are running an engine cooler I would look at the later style without that possible leak area. I have seen the machine work differ a bit on the early sand cast cases when you put the RSR bypass in place of the thermostats you have to check the fit and machine them a bit so they go all the way down and seat on the case. just check it with out the "O" ring to see if it goes all the way home.
Mike Bruns
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The two most useless things to a driver are the braking distance behind you and nine-tenths of a second ago. |
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11-19-2010, 05:01 AM
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Join Date: Oct 1999
Location: Marietta, GA
Posts: 809
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I am using a 2.2l magnesium case. I would like to retain the thermostat to protect the cooler from the high pressure of cold oil.
I thought I had seen some thermostats without this screw. I will have to look for a used one. Thanks, neilca |
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11-19-2010, 05:10 AM
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Join Date: Oct 2003
Location: Central Fla
Posts: 1,864
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thermostat
If you don't find one let me know, I have many, depending on how fast you need one I can send you one monday just cover UPS
Mike Bruns JBRacing.com
__________________
The two most useless things to a driver are the braking distance behind you and nine-tenths of a second ago. |
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11-19-2010, 05:27 AM
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Registered
Join Date: Oct 1999
Location: Marietta, GA
Posts: 809
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Mike that is very generous of you. I am not in a hurry but I don't want to let this slide. Can I send you a check for the shipping to 30062 or I can use Paypal. I will PM you with my address.
Thanks, neilca |
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11-19-2010, 05:35 AM
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Location: Central Fla
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Ups
Sure, PM me your shipping info and I will get with you on monday when I get back to the shop
Mike
__________________
The two most useless things to a driver are the braking distance behind you and nine-tenths of a second ago. |
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11-19-2010, 05:40 AM
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1979 Porsche 911SC
