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)

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Valve Spring

DIMENSIONS
Valve Spring Compression Pressure(a) 71-79 lbs. @ 1.833 inches, 206-220 lbs. @ 1.352 inches
Valve Spring Free Length (Approximate) 52.70 +/- 3.8 mm (2.075 +/- 0.150 inch)
Valve Spring Assembled Height
Intake 44.881 mm (1.767 inch)
Exhaust 46.558 mm (1.833 inch)
Valve Spring Out Of Square 1.981 mm (0.078 inch)

(a) Service limit +/- 8 lbs.