Hi,
got a question regarding my intake manifold/vacuum leaks... About a year ago I traded a vintage Offenhauser manifold for a reproduction of a later factory manifold cast in aluminum. Big mistake. The repro does not fit. When I set it on the engine there's huge gaps although the manifold will fit if I force it to. If I install the bolts and just snug them with a speed wrench there's about .011" gap at one corner, .009" at another, .005"-ish at the third, and the fourth fits well.
Should I worry about this or just go ahead and install it? I have access to both steel and composition gaskets. The composition gaskets mic out at about .065" before install. How much do they typically crush?
nate