Valve: Specifications

INTAKE MARGIN:
Standard 1.0 mm (0.050 inch)
Wear Limit 0.5 mm (0.019 inch)

EXHAUST MARGIN:
Standard 1.2 mm (0.047 inch)
Wear Limit 0.7 mm (0.028 inch)

GENERAL:
Stem Diameter 6.0 mm (0.236 inch)
Face Angle 45° - 45.5°

INTAKE STEM TO GUIDE CLEARANCE:
Standard 0.02 - 0.05 mm (0.0008 - 0.0020 inch)
Wear Limit 0.10 mm (0.004 inch)

EXHAUST STEM TO GUIDE CLEARANCE:
Standard 0.04 - 0.07 mm (0.0016 - 0.0028 inch)
Wear Limit 0.15 mm (0.006 inch)

OVERALL LENGTH (INTAKE):
Standard 112.30 mm (4.4213 inch)
Wear Limit 111.80 mm (4.4016 inch)

OVERALL LENGTH (EXHAUST):
Standard 114.11 mm (4.4925 inch)
Wear Limit 113.61 mm (4.4728 inch)

VALE STEM PROJECTION:
Standard 49.30 mm (1.9409 inch)
Wear Limit 49.80 mm (1.9606 inch)

VALVE TIMING
Intake Valve:
Opens 19° BTDC
Closes 45° ABDC

Exhaust Valve:
Opens 49° BBDC
Closes 15° ATDC