Reply to "4V CC head porting with pressed bronze valve guides."

jeremieMember

quote:
Originally posted by PanteraDoug:
Use the head gasket to mark the edge of where you will grind out additional chamber material.

Grind the chamber out to that scribe line. The exhaust side also.

Both my iron 4v heads and my aluminum A3 heads are opened up to the edge of the head gasket, yes. It does help.

Ok I see, so you mean that I should have bigger heads than the cylinders ?

Is there some material on the combustion chamber sides ? no risk to end-up in the water jacket ?

Jérémie.

9/17/155:36 AM

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