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 44.50 - 45.00 Degrees
Valve Seat Runout (Max) 0.051 mm (0.002 in.)
Valve Seat Width:
Intake 1.75 - 2.36 mm (0.0698 - 0.0928 in.)
Exhaust 1.71 - 2.32 mm (0.0673 - 0.0911 in.)