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

Runout, Maximum: 0.064 mm (0.0025 inch)
Width: 1.75-2.32 mm (0.690-0.091 inch)
Angle: 45°
Insert Counterbore Diameter:
Intake: 39.940-39.965 mm (1.572-1.573 inch)
Exhaust: 34.940-34.965 mm (1.375-1.573 inch)

Valve Angles

Intake Valve Seat:





Intake

Exhaust Valve Seat:





Exhaust