Bulldogg83

OK so I am building up my b16a for a new turbo setup and I picked up an extra b16a head for dirt cheap today and I was wondering a few things. I already bought Rev Springs, Rev Retainers, Ferrera Valves, GSR Cams, and GSR Cam Gears. Should I go with a 3 or 5 degree angle job. Only problem is that I am not sure what changing the angle really does or how it benefits me in any way? What is the angle set at stock? If you are needing a quick low down on what I am shooting for it is 450whp and reving anywhere from 9000-9800 depending on where the turbo stops making power.....Any help would be appreciated.

Bulldogg83

TurBoTeG

putting an angle on the valve and the valve seat (if done properly) generally should allow a flush and tight seal. Tighter seals keep your compression levels where they are supposed to be especially with a forced induction car with all that extra pressure. I personally went with a 5angle job with my setup. Hope this helps a little bit

p0gi

the different angles promote better flow around the valve by making a more rounded exit.