Aside from RWR & TVI does anybody have any reputable machinists to whom they can refer me for installing oversize valve seats?

 

Craycraft racing. Call Bob at 817 441 5893.

 

HBR Competition Engines in Las Vegas. Don't have the number off hand right now but they are in information. Ask for Rick or Jeremy.

 

robertson cycle 402-331-0854 mark.

 

is 36mm exhaust available?

 

Negative! I don't think that would help what you are trying to accomplish scooby. That will kill your pulse rate for that Turbo.

 

what do you mean kill pulse rate for that turbo?

i was told one reason the intake valves are larger than the exhaust valves is to create a vacuum for basic carburetor action. this vacuum isn't needed for fuel injection.

i was told improving things on the exhaust side would have a large impact on power. the reason being that with all the boost on the intake side, i have increased the flow a ton there, but have done nothing to improve flow on the exhaust side.

right now the head is stock with stock cams.

i was looking at larger intake and/or exhaust valves, different cams, larger bore, same stroke.

the turbo is a little big for the motor. i was told becuse of this, more cam would help. if the turbo was small, stock cam or less would be better. when i have retarded the intake cam, i made more peak power and it held longer.

the throttle body is dual 40mm, the intake manifold is matched to stock head w/35mm ports.

i run methanol, but haven't done anything with ignition timing other than woods CDI. i have a Vortex on the way. i lowered compression to 8:1. the vortex will have more timing on the bottom end.

 

You could just put in the RW's A2 exhast cam . .406 lift 278dur. Its not much over stock on the lift but has the duration to get the exhast out with out messing with the valves.

J Ross