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

Intake valve clearance 0.0069 - 0.0089 inch
Exhaust valve clearance 0.0128 - 0.0148 inch
Valve Seats Width-intake 0.043-0.055 inch
Width-exhaust 0.055-0.066 inch
Angle 89-90°
Runout (T.I.R.) 0.001 inch
Valve stem guide clearance Intake 0.0008-0.0026 inch
Exhaust 0.001-0.003 inch
Valve head diameter Intake 1.38 inch
Exhaust 1.18 inch
Gauge diameter 1.318 and 1.102 inch
Valve face runout limit 0.007 inch
Valve guide runout
at bottom of guide with respect to valve seat and top of guide
0.0011 inch
Valve face angle 45.5°
Valve stem diameter (standard) Intake 0.216-0.215 inch
Exhaust 0.215 inch
Valve spring compression pressure (N @ spec. length) Intake 89.92 +/- 4.94 at 0.964 inch
Exhaust 89.92 +/- 4.94 at 0.964 inch
Valve spring free length (approximate) Intake 1.740 inch
Exhaust 1.740 inch
Valve spring installed pressure (N @ spec. length) Intake 39.34 +/- 2.24 at 1.315 inch
Exhaust 39.34 +/- 2.24 at 1.315 inch