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Topic Review (Newest First)
07-25-2010 06:56 PM
stoney 81ta Thanks for all your input,i ended up using the permatex copper with a stock paper gasket looks good so far.
07-25-2010 09:26 AM
sqzbox Flat sand and loose the ridge that seals the gasket. RTV will seal it, but who want's RTV goo sticking out between the housing and the intake. I guess if it doesn't bother you go ahead and use it.
07-25-2010 06:31 AM
68NovaSS It it's not an "O" ringed housing it's easy to flat sand and make it useable.
07-25-2010 05:36 AM
sqzbox It only takes one gorilla with a 1/2 ratchet one time to warp a thermostat housing. Another way to destroy one is cut the ridge on the flange with a sharp gasket removing tool or a putty knife. It's only aluminum. Torque to specs and no farther. On used housings, I check it with a straight edge and inspect the ridge. If either check fails, I toss them. Why? because I know I'm setting myself up for failure. RTV is just a band aid for a boo boo. It will work in some cases, but why not do it right the first time.
07-25-2010 12:03 AM
Torque454 I use black RTV sealer from permatex. Seems to work better than the red or the blue that I used in the past. Although I took apart an engine that had been put together with brush on copper sealer.. that stuff was REALLY sealed up good. Better than any silicon stuff ive ever used.
07-24-2010 10:58 PM
sqzbox If you use the fel-pro gasket and no sealer and it still leaks, you got a bad thermostat housing.
07-24-2010 10:10 PM
hemi joe if you have gm motor use the fel-pro #35562T,you don't need sealer with this gasket.
07-24-2010 09:49 PM
Greg T I just use the spray "High Tack" stuff from Permatex.
07-24-2010 09:04 PM
stoney 81ta
type of gasket sealer to use

what type of gasket sealer to use when installing a thermosat housing,does color matter all i have is the red high heat sealer.

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