Valve Seat

Runout 0.05 mm Maximum (0.002 inch Maximum)
Seat Width:
Intake 1.02-1.65 mm (0.040-0.065 inch)
Exhaust (Light Duty) 1.65-2.49 mm (0.065-0.098 inch)
Exhaust (Heavy Duty) 1.50-2.56 mm (0.059-0.101 inch)