Valve, Intake/Exhaust

Valve Specifications
Valve Head Diameter:
Intake 31.00 mm ± 0.15 mm
Exhaust 27.00 mm ± 0.15 mm
Valve Stem Diameter:
Intake 6.97 mm + 0 or - 0.015 mm
Exhaust 6.97 mm + 0 or - 0.015 mm
Overall Length:
Intake 104.05 mm ± 0.18 mm
Exhaust 103.30 mm ± 0.18 mm
Max. Machining Allowance 0.4 mm
Valve Margin thickness:
Intake/Exhaust 1.5 mm
Min. Height After Grinding 1.2 mm
Sealing Face Angle:
Intake 44.5°
Exhaust 44.5°
Valve Stem Height:
Height 48.5 mm ± 0.4 mm
Max. Machining Allowance 0.4 mm
Clearance Between New Valve and Guide Components:
Intake 0.03-0.06 mm
Exhaust 0.04-0.07 mm
Max. Clearance, Used valve and Guide Components:
Intake/Exhaust 0.15 mm

NOTE: Valve stem height is measured using gauge tool No. 999 5222, or equivalent, placed in cam bearings, and a suitable vernier caliper.