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

Valve Springs Free Length	2.02 Inch (in)
Valve Spring Installed Height (Exhaust)	1.670 - 1.700 Inch (in)
Valve Spring Installed Height (Intake)	1.670 - 1.700 Inch (in)
Valve Spring Pressure (Closed)	76 - 84 at 1.70 Pound Force At Inch (lbf @ in)
Valve Spring Pressure (Open)	187 - 203 at 1.27 Pound Force At Inch (lbf @ in)