Valve Seat Dimensions

Intake Width
Standard 1.0-1.3 mm (0.0394-0.0512 in.)
Service Limit 1.6 mm (0.063 in. max.)
Exhaust Width
Standard 1.3-1.6 mm (0.0512-0.0630 in.)
Service Limit 1.9 mm (0.075 in. max.)
Angle (Intake and Exhaust)
Standard 44.5-45.5° (44.5-45.5°)
Service Limit 44.5°-45° (44.5°-45°)
Valve Seat Out Side Diameter
Intake 41.573-41.599 mm (1.6377-1.638 in.)
Exhaust 35.073-35.099 mm (1.381-1.382 in.)