Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Valve Seat

VALVE SEAT
Angle 44.5° - 45°
Seat Diameter
Intake 34.37 - 4.63mm (1.353 - 1.363 inch)
Exhaust 27.06 - 7.32 mm (1.065 - 1.075 inch)
Runout (Maximum) 0.05 mm (0.002 inch)
Valve Seat Width
Intake and Exhaust 0.9 - 1.3 mm (0.035 - 0.051 inch)
Service Limit
Intake 2.0 mm (0.079 inch)
Exhaust 2.5 mm (0.098 inch)