Series 2 Pre 2000... No paper T stat gasket - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-17-2007, 08:17 PM   #1
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Default Series 2 Pre 2000... No paper T stat gasket

I have been testing this over the last week that I've had my car back together. When it was put together, the paper gasket was intentionally left off the thermostat housing. For some reason GM had called for the gasket on S2'* before 2000 and after 2000 they didn't use or require them.

I'm here to say.. I did it, monitored it and all is 100% w/o the paper gasket.

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Old 04-17-2007, 08:30 PM   #2
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I'd be curious to see how it does in hi-heat.

I'll take your car with me to the desert, and send you back the results
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Old 04-17-2007, 08:37 PM   #3
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I will assume it would do the same as any 2000 + car.
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Old 04-17-2007, 08:40 PM   #4
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so wait, you didn't use any type of gasket? Not even gasket-maker? interesting...
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Old 04-17-2007, 08:43 PM   #5
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I've replaced several thermostats, not on my Bonne yet, using only the hi-temp goo. You gotta let it sit a bit longer before driving, but I never had one leak.

This was done primarily on old GM 350'* and Ford 351'*. 70'* and early 80'* versions...
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Old 04-17-2007, 09:19 PM   #6
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I did my '97, '98, and '00 with only the o-ring. Although it'* not the desert, 100 degree heat and Houston traffic is a pretty good test of any cooling system. I never had a leak.
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Old 04-17-2007, 10:50 PM   #7
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It would seem to me as long there were clean surfaces to meet together,it wouldn't leak anyway


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Old 04-17-2007, 11:22 PM   #8
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you guys use gooo Then what'* the gasket for
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Old 04-17-2007, 11:43 PM   #9
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I use blue RTV on both the coolant neck and the "cap" on the front of the LIM instead of OEM gaskets. There'* just something about a paper gasket touching coolant that doesn't seem right to me.
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Old 04-18-2007, 12:49 AM   #10
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I use a smear of red RTV. I find without it, there will be slight weapage.
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