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

Face Angle Intake And Exhaust 45 - 45 1/2°
Head Diameter Intake 32.12 - 33.37 mm (1.303 - 1.313 inch)
Head Diameter Exhaust 28.57 - 28.83 mm (1.124 - 1.135 inch)

VALVE MARGIN
Intake 1.15 - 1.48 mm (0.0452 - 0.0582 inch)
Exhaust 1.475 - 1.805 mm (0.058 - 0.071 inch)

VALVE LENGTH (OVERALL)
Intake 114.69 - 115.19 mm (4.515 - 4.535 inch)
Exhaust 109.59 - 110.09 mm (4.603 - 4.623 inch)

VALVE STEM TIP HEIGHT
Intake 45.01 - 46.07 mm (1.77 - 1.81 inch)
Exhaust 43.51 - 44.57 mm (1.71 - 1.75 inch)

STEM DIAMETER
Intake 5.934 - 5.952 mm (0.234 - 0.234 inch)
Exhaust 5.906 - 5.924 mm (0.233 - 0.233 inch)

STEM TO GUIDE CLEARANCE
Intake 0.048 - 0.066 mm (0.0018 - 0.0025 inch)
Exhaust 0.0736 - 0.094 mm (0.0029 - 0.0037 inch)
Max. Allowance Intake 0.076 mm (0.003 inch)
Max. Allowable Exhaust 0.101 mm (0.004 inch)