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

Height 13.25 - 13.75 mm (0.521 - 0.541 inch)
Guide Bore Diameter (Std) 11.00 - 11.02 mm (0.4330 - 0.4338 inch)
Finished Diameter 5.975 - 6.000 mm (0.2352 - 0.2362 inch)
Outer Diameter 13.055 - 13.065 mm (0.514 - 0.5143 inch)
Inner Diameter 8.000 - 8.018 mm (0.314 - 0.315 inch)
Overall Length:
Intake 44 mm (1.732 inch)
Exhaust 48 mm (1.889 inch)

Valve 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)
Wear Limit 0.25 mm (0.010 inch)