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

DIMENSIONS
Compression Pressure (lb.@ Spec. Length)
Intake and Exhaust (Installed) 57-63 lbs. @ 1.56 inch
Intake and Exhaust
(Valve Open) 118-132 lbs. @ 1.16 inch
(Valve Closed) 57-63 lbs. @ 1.56 inch
Free Length (Approximate) 2.02 inch
Assembled Height 1.54-1.58 inch
Service Limit 5% Pressure Loss @ Specified Length
Out of Square Service Limit 5/64 (0.078) inch