I don't think it was the physical design of the Masi exhaust valves that caused them to "bend", but poor material. I don't think they held up the the...
Hey guys just thought I would remind or inform all you guys with 2 piece manifolds that white OEM gasket (that is seemingly welded onto the manifold)...
Rob,
What I have found is you can't really put a cc number on combustion chamber volume from various valves available. For example the custom Manley...