Kibblewhite Precision 20-2131 Bronze Exhaust Valve Guide (+.001in.)

We choose to use C630 nickel 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. 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 We choose to use C630 nickel 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. 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 Outside Dia. : (G): 0.5630in. / +0.001in. A: 0.650in. B: 0.700in. C: 1.150in. D: 1.450in. E: 0 .615in. F: 0.3098in. Note: Special shouldered guide, accepts 0.600in. valve lift. 0.420in. guide top accepts KPMI OEM style seal 20-20620, Steel Clad Viton seal 20-2015, and Solid White PC Style Seal 20-2009.