Aluminum heads should/would require a "cylinder head manufacturers suggested choice of gasket", not the steel shim Mr G 1135G style choice. Those are meant for iron on iron.View attachment 1715168516
If they fail, fine I will use something else. In effort to be as close to optimum quench I decided to take a risk. I covered them with permatex copper to minimize different metal interaction effect.
My main question was if regardless of what material of gasket, perhaps trying to be as close to optimum quench as possible was not that good idea if the goal was not reached?
Perhaps putting my felpro 1009 and making it around 10.7:1 was a better idea afterall? Piston to head would be at around 0.077 then.
