Valve Seat

VALVE SEAT
Angle 44.5° - 45°
Seat Diameter
Intake 34.37 - 4.63mm (1.353 - 1.363 inch)
Exhaust 27.06 - 7.32 mm (1.065 - 1.075 inch)
Runout (Maximum) 0.05 mm (0.002 inch)
Valve Seat Width
Intake and Exhaust 0.9 - 1.3 mm (0.035 - 0.051 inch)
Service Limit
Intake 2.0 mm (0.079 inch)
Exhaust 2.5 mm (0.098 inch)