Thread: Thermostat gasket.
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Old 12-10-2003, 10:37 AM
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There has to be a "relief step" machined in either the manifold or the thermostat housing to allow the outer diameter of the thermostat to seat as it is sandwiched between the manifold and housing. Some combinations do not have this. Without the step you may experience this type of leak. There are 2 or 3 different gaskets for this application. Some have a larger bypass hole reducing the amount of gasket material that actually forms the seal.

Just a thought...............

Rick
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