Quote:
Originally Posted by 34 fordor owner
Okay that gasket (bottom in picture) is thicker than any others I have used and does not have that extra hole. Basically if I have a Holley 94 on a 34 intake I do not need that hole in the gasket? Also notice my gasket on the carb now is hanging over… odd.
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On this subject of that heat riser hole in the manifold, a problem noted for many years has been dealt with in this manner:
Remove the manifold from the engine, and obtain old wheat stalk pennies to tap into the two heat riser holes in the engine block, one on each cylinder bank. (Wheat stalk pennies are required due to their metallurgy) On the manifold, these two holes converge at the top to pre-heat the fuel in the carburetor, which with modern fuel is radical overkill. The insertion of pennies closes off and eliminates the heat riser through the manifold altogether, which does several things:
It creates a vibrant exhaust rap (if you also have dual exhaust pipes).
It takes a few minutes longer to warm up the engine in the morning.
It helps protect the power valve from damage.
it goes a long way toward preventing fuel starvation issues caused by heat soak.
A reasonable compromise to the above method is to drill ⅛" holes in the wheat stalk pennies. In both cases, the pennies are gently tapped into the holes until flush with the top surface.