Valve Seat: Specifications

NOTE: Specifications are for intake and exhaust unless noted.

Angle 45 °
Contact Width 1.9-2.1 mm (0.0748-0.0827 inch)
Narrowing Angle
Top 30°
Bottom:
Intake 77°
Exhaust 70°
Runout, Maximum 0.025 mm (0.00098 inch)