Valve, Intake/Exhaust

OVERALL LENGTH
Exhaust 102.67 mm (4.042 in.)
Intake 102.97 mm (4.047 in.)

STEM DIAMETER
Intake 7.995 - 7.982 mm (0.3148 - 0.3143 in.)
Exhaust 7.960 - 7.940 mm (0.3134 - 0.3126 in.)

FACE ANGLE 45° - 45.5°

MARGIN
Intake:
Standard 1.2 mm (0.047 in.)
Limit 0.7 mm (0.028 in.)
Exhaust:
Standard 2.0 mm (0.079 in.)
Limit 1.5 mm (0.059 in.)

STEM TO GUIDE CLEARANCE
Exhaust:
Standard Value 0.05 - 0.09 mm (0.0020 - 0.0035 in.)
Wear Limit 0.15 mm (0.0059 in.)
Intake:
Standard Value 0.03 - 0.06 mm (0.0012 - 0.0024 in.)
Wear Limit 0.10 mm (0.0039 in.)