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Any problems with using a copper gasket AND high temp RTV? I thik I would put the RTV on both sides of the gasket.
I tried the copper gaskets, worthless junk. They leak. They leak everywhere. The Red High Temp RTV will melt and run out. Big mess to clean up.
The best thing we have found is Percy's laminated aluminum header gasket found at the local parts stores (O'Reilly) and Summit / Jegs. Cost about $31
pr. If your header flange is warped, you can use one and half on each side to seal. They are the best header gaskets we have tried. You do not need any RTV seal and use can re-use them.
Dwight