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 width-
intake 1.273-2.121 mm (0.05-0.083 inch)
Valve seat width-
exhaust 1.556-2.404 mm (0.06-0.094 inch)
Valve seat runout 0.059 mm (0.002 inch)
Valve seat angle 45 degrees