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

Inner Spring Free Length-Standard 1.4204 Inch (in)
Inner Spring Free Length-Minimum 1.3780 Inch (in)
Outer Spring Free Length-Standard 1.5921 Inch (in)
Outer Spring Free Length-Minimum 1.5441 Inch (in)
Inner Spring Preload-Standard 15.2 - 17.4 at 1.08 Pound Force At Inch (lbf @ in)
Inner Spring Preload-Minimum 13.0 at 1.08 Pound Force At Inch (lbf @ in)
Inner Spring Side Clearance-Maximum 0.063 in
Outer Spring Preload-Standard 33.9 - 39.2 at 1.25 Pound Force At Inch (lbf @ in)
Outer Spring Preload-Minimum 30.0 at 1.25 Pound Force At Inch (lbf @ in)
Outer Spring Side Clearance-Maximum 0.070 in