Valve, Intake/Exhaust

Valve thickness of intake valve head (margin)
Standard Value 1.0 mm (0.039 inch)
Limit 0.5 mm (0.019 inch)
Valve thickness of exhaust valve head (margin)
Standard Value 1.2 mm (0.047 inch)
Limit 0.7 mm (0.028 inch)
Valve stem diameter 6.0 mm (0.236 inch)
Valve stem to guide clearance (Intake)
Standard Value 0.02 - 0.05 mm (0.0008 - 0.0020 inch)
Limit 0.10 mm (0.004 inch)
Valve stem to guide clearance (Exhaust)
Standard Value 0.04 - 0.07 mm (0.0016 - 0.0028 inch)
Limit 0.15 mm (0.006 inch)
Valve face angle 45° - 45.5°
Overall valve length (Intake)
Standard Valve 112.30 mm (4.4213 inch)
Limit 111.80 mm (4.4016 inch)
Overall Valve length (Exhaust)
Standard Value 114.11 mm (4.4925 inch)
Limit 113.61 mm (4.4728 inch)
Valve stem projection
Standard Value 49.30 mm (1.9409 inch)
Limit 49.80 mm (1.9606 inch)