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







Intake Valve Seat Width 1.5-2.0 mm (0.06-0.08 in.)
Exhaust Valve Seat Width 1.5-2.0 mm (0.06-0.08 in.)
Valve Seat Angle 45°
Valve Seat Runout (T.I.R.) 0.076 mm (0.003 in.)
Bore Diameter (Insert Counterbore Diameter)
Intake (Maximum) 47.097 mm (1.8542 in.)
Intake (Minimum) 47.072 mm (1.8532 in.)
Exhaust (Maximum) 39.730 mm (1.5645 in.)
Gasket Surface Flatness 0.18 mm (0.007 in.)