(5) We choose to use the copper based C63000 nickel-aluminum bronze as a material to make valve guides because of its ideal characteristics for the application. The 4-5 percent nickel content provides superior resistance to wear, and the approximately 80 percent copper content delivers outstanding heat conductivity. KPMI guide profiles are designed to have minimal effect on the airstream while maintaining critical cross sectional thickness in high temperature areas, promoting high performance and endurance. The top portion of the guides are shortened when cam lift information available at the time of design shows that additional retainer to seal clearance is required.
KPMI Red 100% Viton® valve stem seals are designed to have optimum fitment,
allow for maximum lift, and to give maximum life. KPMI Red valve stem seals
are resistant to high temperatures, petroleum products and the corrosive gasses that are the
by-products of combustion. These seals retain their ability to seal in situations where other materials could harden and allow oil to enter the combustion chamber causing detonation, carbon build up and a loss of power.
The Red Ones are truly the racer’s choice.