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 Springs Compression Pressure (N[lbs]@Spec.Length)
Valve Open (Without Damper) 979 N (220 lbs.) @ 30.0 mm (1.18 in)
Valve Closed (Without Damper) 378 N (85 lbs) @ 41.9 mm (1.65 in)
Installed Spring Height 50.1 mm (1.65 inches)
Service Limit 10% Force Loss @ Specified Height