|
Making the valve train lighter can also help reduce the forces needed to keep adequate control of the valves. If you know that you're never going to run the motor over 3000 RPM, for instance, you can likely get away with an awful lot of lightening of the rocker arms, retainers, and so on. Going to a lighter material (e.g., titanium) for the valves themselves will pay potentially large benefits for weight reduction.
That can let you reduce the spring pressures even further...
I don't know enough about the subject to begin to guess at how light you can go with the parts, or with the springs. But note that often times the super lightweight materials are super expensive... Titanium valves in particular!
-soD
|