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Old 05-30-2024, 07:46 PM
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Rachelsdad Rachelsdad is offline
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Default Exhaust flange gasket recommendations

When I first switched my '63 Bonneville (389) back to duals (stainless) in '86, I had a real Dickens of a time getting the pipes and the flanges to line up squarely.

More recently, the engine was rebuilt and everything put back together (not by me). I have a noticeable leak on (I think) the passenger side, and it sounds like it's right up front. The likeliest culprit is the flange. What is everyone using these days for good sealing? Extra thick gaskets? Brands?

TIA

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Old 05-30-2024, 08:08 PM
tom s tom s is offline
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If it’s head to manifold use Remflex

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Old 05-30-2024, 09:07 PM
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Rachelsdad Rachelsdad is offline
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Interesting. Thanks. Completely new to me. Just found their website, and have been reading up. ;-)

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Old 06-06-2024, 11:38 AM
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ZeGermanHam ZeGermanHam is offline
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Yes, Remflex gaskets are 100% the way to go for the manifold flange against the cylinder head. They're thick and compress to form a very good seal. They have to be handled a little delicately during installation, though. Don't want to bend them.

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