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 seats width-intake 0.075-0.083 inch
Valve seats width-exhaust 0.075-0.083 inch
Valve seats angle 44.51-45.01°
Valve seats runout (T.I.R.) max 0.0010 inch
Valve arrangement (front-to-rear) Left Hand E-I-E-I-E-I-E-I
Right Hand I-E-I-E-I-E-I-E
Valve stem to guide clearance-intake 0.00079-0.00272 inch
Valve stem to guide clearance-exhaust 0.0018-0.0037 inch
Valve head diameter-intake 1.75 inch
Valve head diameter-exhaust 1.34 inch
Valve head diameter-gauge diameters 1.67 and 1.26 inch
Valve face runout limit 0.002 inch
Valve face angle 45.25-45.75°
Valve stem diameter (Std) -Intake 0.275-0.2746 inch
Valve stem diameter (Std) -exhaust 0.274-0.2736 inch
Valve guide inner diameter 0.00079-0.03740 inch