Quote:
Originally Posted by MOTORHEAD
Update:
The manifold is ported so large that there is very little sealing surface at the bottom, but why did it delaminate and squirm in the first place?
Also see pic of valve stem seal. Looks ok, fits stem tighly. don't know if it's viton or not, are all viton seals blue?
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Because it needs a MLS backing which standard gaskets do not have. The 1247-S FelPros I mentioned earlier do and stop this and also prevent
antifreeze from attacking the gasket-eroding it. Plus they are a harder material-like 'linoleum'.
Those are the teflon stem seals. They harden with heat in street use and take
oil.
Here are the vitons:
