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)

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Valves

All Measurements Given In Inches, Unless Otherwise Specified

Valve Stem Diameter
Intake 0.314
Exhaust 0.313
Valve Installed Height [05]
Intake 1.313
Exhaust 1.343
Valve Face Angle, Degrees 45
Valve Clearance
Intake [04]
Exhaust [04]

[04] -- Hydraulic lifters, no adjustment required.
[05] -- Minimum allowable distance, measured from tip of valve stem to level of valve cover surface.