Valve Seat

Valve Seats Width
Intake
Standard 1.25 - 1.55 mm (0.049 - 0.061 inch)
Service Limit 2.00 mm (0 - 079 inch)
Exhaust
Standard 1.25 - 1.55 mm (0.049 - 0.061 inch)
Service Limit 2.00 mm (0.079 inch)
Stem installed height
Intake
Standard 40.8 - 41.0 mm (1.606 - 1.614 inch)
Exhaust
Service Limit 54.6 - 54.8 mm (2.150 - 2.157 inch)