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

Pressure	Intake	89.0 at 1.0 Pound Force At Inch (lbf @ in)
	Exhaust	89.0 at 1.0 Pound Force At Inch (lbf @ in)
Free Length (Approximate)	Intake	1.73 Inch (in)
	Exhaust	1.73 Inch (in)
Installed Pressure	Intake	39.8 at 1.36 Pound Force At Inch (lbf @ in)
	Exhaust	39.8 at 1.36 Pound Force At Inch (lbf @ in)
Service Limit		10 percent Pressure Loss@ Specified Height