Valve, Intake/Exhaust

Length (Tip to Gauge Dimension Line)
Intake 122.479 to 122.860 mm (4.822 to 4.837)
Exhaust 122.860 to 123.241 mm (4.837 to 4.852 inch)
Valve Stem Diameter 7.899 to 7.925 mm (0.311 to 0.312 inch)
Stem to Guide Clearance 0.025 to 0.076 mm (0.001 to 0.003 inch)
Valve Head Diameter-
Intake 48.387 to 48.641 mm (1.905 to 1.915 inch)
Exhaust 37.973 to 38.227 mm (1.495 to 1.505 inch)
Valve Face Angle-
Intake 45°
Exhaust 45°
Tip Refinishing (Max. Allowable) 0.25 mm (0.010 inch)
Exhaust Valve Timing
Opens 49.8 BBDC
Closes 29.2° ATDC
Intake Valve Timing
Opens 12.4° BTDC
Closes 60.9° ABDC
Valve Overlap 41.6°
Intake Duration 253.3°
Exhaust Duration 259.°