Was wondering what kind of good/bad/no effects I could run into when it comes to wet and dry flow out of a valve by decreasing the combustion chamber on a head, specifically Dart's SBF 225s, and would angle milling help/hurt any effects at all? I need to drop them down to about 52 ccs.

thanks
Jeremy

 

No it shouldn't cause any problems at all. The flow is mostly dictated by the flow out of the valve within about a 1/2 inch. The good part is the intake side of the chamber is also the part of the valve closest to the short side radius of the intake port so there is less flow there, luckily because that is the area effected the most by milling the head.

Bret