huh? I enjoy educating the general public about performance nuances soo, let me take a stab at this one. Wrong. Doing it by hand will get the ports the same. Thats where experience and skill come into play. Throw a little knowledge of fluid dynamics, and you’ve got yourself a decent head porter.
cnc>hand porting… REALLY!?
Read anything anyone has posted in this thread and I think that you see we all pretty much know what where talking about. We’re debating intracacies of a very dynamic element of the internal combustion engine. Grandstanding on an irrelevant phrase only makes you look foolish.