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 Spring

Compression Perssure
Service Limit - 10% Force Loss @ Specified Height
Valve Open to Max Lift at 1.16 inch 180 Pound-Force (lbf)
Valve Closed at 1.58 inch 65 Pound-Force (lbf)
Free Length (Approximate) 1.84 Inch (in)
Installed Spring Height 1.650-1.736 Inch (in)