General Specifications

DIMENSIONS
Combustion Chamber Volume: 47.1-50.1 cubic cm (2.874 cubic inches)
Valve Guide Bore Diameter: 8.720-8.745 mm (0.3433-0.3443 inches)
Valve Seats
Width: 1.5-2.0 mm (0.06-0.08 in)
Angle: 45°
Runout (T.I.R.): 0.076 mm (0.003 in)
Bore Diameter (Insert Counterbore Diameter): 47.097 mm (1.8542 inches) Max.
Intake: 47.072 mm (1.8532 inches) Min.
Exhaust: 39.730 mm (1.5645 inches) Max.
Gasket Surface Flatness: 0.08 mm (0.003 inch) over 152.0 mm (6.0 inches)