Blown manifold gasket

Anonymous-0 · Nov 1, 2011

Has anyone had any luck using two gaskets when the exhaurt manifold is eroded away somewhat? It s on a Super M. Thanks in advance to anyone who comment.

mike1972chev · Nov 1, 2011

How bad is the errosion????(Like laying a straight edge across and feeler gauging it ???)Have you took a grinding disc and knocked off all of the loose "crud/rust" yet????

I used Red hi temp silicone on my gasket,but the erroded part wasnt much over 1/16" in.

If it is REAL bad,how about having it surface milled???

buzzuca · Nov 1, 2011

I used JB weld to fill in the low spots. Been that way for ten years

FarrviewWest · Nov 2, 2011

I took my manifold to Midwest Cylinder Head in Nevada, IA and they milled the surface completely flat for $36. The manifold and head now mate up perfectly! Of course the head was milled too when I took it in for a rebuild...I don't think I could have doubled up on gaskets and make mine leak free. The problem was that the manifold just wasn't flat and no matter how much i tightened the nuts onto the studs, it would still leak.

good luck

Tom Fleming · Nov 2, 2011

Farrviewest has the correct answer. Have the gasket surface milled. Shouldn't cost that much and will do the job right. 2 gaskets is just asking for trouble.

Blown manifold gasket

Anonymous-0

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mike1972chev

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buzzuca

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FarrviewWest

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Tom Fleming

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