Valve, Intake/Exhaust

Valve Timing
Intake
Opens 12.4 degrees BTDC
Closes 60.9 degrees BTDC
Exhaust
Opens 49.8 degrees BBDC
Closes 29.2 degrees ATDC
Valve Overlap 41.6 degrees
Intake Duration 253.3 degrees
Exhaust Duration 259 degrees
Valves
Valve Length (Overall)
Intake 122.479 to 122.860 mm (4.822 to 4.837 in.)
Exhaust 122.860 to 123.241 mm (4.837 to 4.852 in.)
Valve Stem Diameter 7.899 to 7.925 mm (0.311 to 0.312 in.)
Stem-to-Guide Clearance 0.025 to 0.076 mm (0.001 to 0.003 in.)
Valve Head Diameter
Intake 48.387 to 48.641 mm (1.905 to 1.915 in.)
Exhaust 37.973 to 38.227 mm (1.495 to 1.505 in.)
Valve Face Angle
Intake 46.5 degrees
Exhaust 46.5 degrees
Tip Refinishing (Maximum Allowable) 0.25 mm (0.010 in.)