Machined head yes, machined header, come on, we aint that fuking stupid here. Ever heard of thermal expansion, steel flange, aluminium head, no gasket equals leak, header temp is in excess of 800F, no rtv will last in that application it will become hard and brittle. Felpro makes the correct gasket.
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Originally Posted by S Bramlitt
In regards to your exhaust leak... ABSOLUTELY no reason for a gasket between the heads and the machined surface of the header flange. Perhaps with a set of 100 dollar Hookers!!! I have been using a light coat of high temp Permatex for years and have had no issues. In my opinion you will have more problems with the gasket in there than you did before. Just my 2 cents....
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