Valve, Intake/Exhaust

GENERAL SPECIFICATIONS

Intake Valve Timing
Opens 12.4 BTDC
Closes 60.9 ABCD
Exhaust Valve Timing
Opens 49.8 BBDC
Closes 29.2 ABCD
valve overlap 41.6
Intake Duration 253.3
Exhaust Duration 259

Valves
Length ( Tip-to-Gauge Dimension Line) Intake 122.860mm (4.822 to 4.837 inch)
Length (tip-to-Gauge Deminsion Line) Exhaust 122.860 to 123.241mm (4.837 to 4.852 inch )
Valve Stem Diameter 7.899 to 7.925mm (0.001 to 0.003 inch)
Stem-to-Guide Clearence 0.025 to 0.076mm (0.001 to 0.003 inch)
Valve Head Diameter-
Intake 48.387 to 48.641mm (1.905 to 1.915 inch)
Valve Head Diameter-
Exhaust 37.973 to 38.227mm (1.495 to 1.505 inch)
Valve Face Angle-Intake 45
Valve Face angle-Exhaust 45
Tip Refinishing (Max. allowable) 0.25mm (0.010 inch)