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Gaskets for marine exhaust

What's the collective wisdom out there wrt joints between exhaust manifolds, risers, and elbows ... use a sealant (e.g. Permatex) along with the gaskets, or just the dry gasket alone?
Dave
Oct 21
2005
There just isn't enough water pressure to be an issue, so dry gaskets are fine Dave...just make sure mating surfaces are clean and flat. And there is never a need for any type of sealant on the dry exhaust portion.

Good luck.

Netsock
Oct 21
-- John H

"The trouble with our liberal friends is not that they're ignorant: It's just that they know so much that isn't so." Ronald Reagan

PocoLoco
Oct 21
Anti-seize compound makes an excellent exhaust gasket sealer. While JR
Oct 21
I've never had a problem with dry gaskets. If you've got an exhaust problem the sealant isn't going to help much. Plus, if you have to replace one, and the gaskets have slots instead of holes for the bolts, replacing one that did not have sealant is easy, just loosen up the bolts enought to pull the old gasket out and slide the new one in. If you have sealant you have to remove the manifold and clean the surfaces. We all know how much fun it is handleing those heavy manifolds, while trying to get the bolts started, while trying not to distroy the new gasket in the process. Capt
Oct 21
   

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