Bavarian Solutions  [ Cylinder Head Services - Porting & Polishing ] In order to maximize volumetric efficiency it is imperative that the cylinder head port is designed for maximum flow potential. There are several intricate variables involved in developing a proper port design. We conduct a tremendous amount of research and development to ensure that your cylinder head will be as efficient as possible for your particular application. Our Port Design Services Covers The Following:   -Correct Valve Size -Differences in Valve Seat Angles -Proper Port Sizing -Valve Seat Mapping -Port Mapping -Wet Flow -Mixture Motion -CFM per Square Inch & Flow Coefficiency