General Specifications

GENERAL SPECIFICATIONS

Cylinder Head
Combustion Chamber Volume (cc) 50.1 - 47.1
Valve Guide Bore Diameter
Intake and Exhaust 7.017 - 7.042 mm (0.2762 - 0.2772 inch)

Valve Seats
Width Intake and Exhaust 2.0 - 2.5 mm (0.078 - 0.098 inch)
Angle 44.5 Degrees
Runout (T.I.R.) 0.035 mm (0.0013 inch)
Gasket Surface Flatness 0.08 mm (0.003 inch) over 152.0 mm (6.00 inch)

Valve Stem to Guide Clearance
Intake 0.026 - 0.071 mm (0.001 - 0.0027 inch)
Exhaust 0.038 - 0.083 mm (0.0015 - 0.0032 inch)

Head Gasket Surface Flatness 0.08 mm (0.003 inch) in 152.0 mm (6.00 inch)
Head Gasket Surface Finish (RMS) 1.0 - 3.3 Micrometers