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 Guide


NOTE: All specifications are in inches, unless specified otherwise.

Cylinder Head Warpage Limit 0.004
Cylinder Head Overhead Thickness 5.429-5.437

Valve Guides:
Stem To Guide Clearance:
Intake 0.0008-0.0039
Exhaust 0.0016-0.0039

Valve Seats:
Seat Angle 45deg.
Outer Diameter:
Intake 1.4211-1.4415
Exhaust 1.2433-1.2636