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, Intake/Exhaust

Valve Face Angle 45°
Valve Face Runout 0.038 mm (0.0014 inch)
Valve Margin:
Exhaust 2.13 - 1.87 mm (0.083 - 0.073 inch)
Inlet 1.49 - 1.23 mm (0.058 - 0.048 inch)
Valve Head Diameter:
Inlet 37 mm (1.45 inch)
Exhaust 44 mm (1.73 inch)
Valve Overall Length:
Inlet 134.23 mm (5.28 inch)
Exhaust 127 mm (5.00 inch)
Valve Stem To Guide Clearance:
Inlet 0.020 - 0.053 mm (0.0007 - 0.0020 inch)
Exhaust 0.035 - 0.076 mm (0.0014 - 0.0029 inch)
Valve Tip To Retainer Groove Centerline 4.97 - 5.46 mm (0.195 - 0.214 inch)