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

Cylinder Head, Valve Guide, and Valve Seats

Cylinder Head:
Warpage Limit 0.0020 in.
Grinding Limit 0.004 in.
Standard Height 3.870 in.

Valve Guides:
Standard Inside Diameter .2362-.2367 in.
Protrusion Above Head .689-.709 in.
Stem To Guide Clearance:
Intake .0014-.0024 in.
Exhaust .0016-.0026in.

Valve Seats:
Seat Angle Degrees 45°
Seat Width:
Intake .028-.055 in.
Exhaust .039-.071 in.