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

Valve spring free length intake mm (inch) 43.1 (1.7)
Valve spring free length exhaust mm (inch) 43.1 (1.7)
Valve spring squareness -
Valve spring compression pressure intake (at specified height) (lbs.) 275-305 Nm at 35.9-36.7 mm (202.84-224.968 ft. lbs. at 1.413- 1.445 inch) Valve spring compression pressure exhaust (at specified height) (lbs.) 275-305 Nm at 35.9-36.7 mm (202.84-224.968 ft. lbs. at 1.413-1.445 inch) Valve spring installed height intake mm (inch) 39.86-40.86 (1.569-1.601)
Valve spring installed height exhaust mm (inch) 39.86-40.68 (1.569-1.601)
Valve spring installed pressure -