FRUSTRATION: Rear Main Seal and Exhaust Manifold Gasket

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Anonymous

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Hello everybody, Im back after a long absence. Anyways, my third rear main oil seal is leaking again and I can't keep my EMGasket from leaking. Got the Cliffy 200ci single outlet header and I have modified it once to smoothout the mating surface and it just blew out the stock gasket after 3 days. AAAAHHHHHHHHHH... Anybody got some hints???
 
Did you use sealant? Get some high temp, ultra copper sealant and just gob the tar out of it. That worked wonders for my header.

Slade
 
If the crank has a groove worn into the surface, it will be hard to seal.

On the head, the flange surface has to be in pretty good shape as well. You may need to get the exhaust flange milled flat.
 
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