Valve Seat

Intake Valve Seat Width 1.5-2.0 mm (0.06-0.08 in.)
Exhaust Valve Seat Width 1.5-2.0 mm (0.06-0.08 in.)
Valve Seat Angle 45°
Valve Seat Runout (T.I.R.) 0.076 mm (0.003 in.)
Bore Diameter (Insert Counterbore Diameter)
Intake (Maximum) 47.097 mm (1.8542 in.)
Intake (Minimum) 47.072 mm (1.8532 in.)
Exhaust (Maximum) 39.730 mm (1.5645 in.)
Gasket Surface Flatness 0.18 mm (0.007 in.)