Valve Seat

Angle 44.5 - 45 °
Seat Diameter
Intake 34.37 - 34.63 mm (1.353 - 1.363 in.)
Exhaust 27.06 - 27.32 mm (1.065 - 1.075 in.)
Runout (Maximum) 0.05 mm (0.002 in.)
Valve Seat Width
Intake
Standard 0.9 - 1.3 mm (0.035-0.051 in.)
Service Limit 2.0 mm (0.079 in.)
Exhaust
Standard 0.9 - 1.3 mm (0.035-0.051 in.)
Service Limit 2.5 mm (0.098 in.)