We do know how much power gain from Tomei Poncam. How about Procam?
This time, we try with this R33GTR with stock N1 engine(turbo has been changed).
Up to 10.25mm, most of RB26head doesn't need head machining, however it need to change valve spring& retainer, and lifter. Shimming is required of cause.
We need to spend time to change those parts when engine is not out of vehicle, however result is...
The power and torque gain from low RPM to top end, over 40kw at wheel on peak power.
Compare with same boost
Another option!!!
