Quote:
Originally Posted by Tom Vaught
So how tall are the "O"-rings protruding from the block deck and the head deck surfaces?
How thick of a Head Gasket (Assume Copper) are you using?
Tom Vaught
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The SCE copper head haskets are .080, stainless wire diameter is .041. I'll get the actual protrusion measurements when I drop of the valve springs.
Notes from SCE:
If you go with double o-rings they should not be stacked unless you use a thicker head gasket. Since copper (like a liquid) does not compress, rather it is displaced, the gasket does not like more than 25% of the cross section impinging at any one spot. Over 25% of cross section you risk cutting the gasket. I suggest off-setting the o-rings so as to deform the head gasket into an ”S” shape between the rings. Off-setting in this fashion will most likely require that the o-rings in either the head or block are in a ‘figure 8’ pattern but you will have to do the layout on the actual deck surfaces to be sure.