Question about 1985 Chevrolet Corvette

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How do you repair the thermastat in a 1985 corvette

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The thermostat is under the Water Outlet, that is connected to the upper radiator hose at the engine. You drain the system to where the coolant is below the level of the thermostat, remove the hose to the water outlet, remove the bolts that hold the water outlet housing and remove the housing. Clean the surfaces on the housing and the mating surface on the engine, once clean, apply Copper Plus RTV sealant (or similar) to both sides of the gasket that you bought when you bought the new thermostat, intall it and the new thermostat in the same exact position it was in when you removed it, then tighten the bolts to just a little more than snug, 12-15 ft. lbs. max torque, reinstall hose & tighten clamps. Refill radiator and test for leaks after letting the RTV set-up for several hours after replacing the gasket. That will allow the sealant time to cure for a good seal.

Not a bad idea to check all hoses and belts when doing this. Remember, antifreeze is poison to animals, cover and dispose of properly.

good luck

Posted on May 15, 2010


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