180 T-Stat Info - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-21-2005, 05:16 AM   #1
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Default 180 T-Stat Info

Just a few simple questions, do I need to purchase a gasket(*) to change the T-stat. If so which major auto parts stores carry them and how much do they cost. I purchased a 180 stat from auto zone tonight and didnt even think about gaskets I wanna make sure I got what I need before I change it. Last summer my t-stat went in my cutlass and that damn thing was always around 230-240 so I want to do this mod before the hot summer gets here. Among the many things Ive changed on cars, I have yet to do a thermostat.

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Old 05-21-2005, 05:33 AM   #2
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Ya you need gaskets. Make sure u also replace the round rubber gasket on the T stat.
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Old 05-21-2005, 09:59 AM   #3
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i just purchased mine yesterday with the round rubber gasket and gallon of anti freeze. i have the silicone but it the a gasket for the houseing as well? the gasket im talking about it the gasket that matches the shape of the housing'* surroundings
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Old 05-21-2005, 10:53 AM   #4
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On my car there is the o-ring that surrounds the t-stat, and a paper gasket between the gooseneck and the block.
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Old 05-21-2005, 11:49 AM   #5
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That'* correct. You need them both. The paper gasket isn't supposed to need any other sealant, but I always put a SMALL bead of silicon gasket sealer (hi-temp) on both aluminum surfaces first. My aluminum LIM and Gooseneck have mild pitting from age.
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Old 05-21-2005, 11:58 AM   #6
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If you're going to use silicon sealant, you really don't need the paper gasket.
Mine seals fine without one...just a light smear of silicone red.
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