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

Free Length 51.3 mm (2.02 inches)
Pressure Closed 360-396 N at 45.2 mm (81-89 lbs. at 1.78 inches)
Pressure Open 1090-1179 N at 33.8 mm (245-265 lbs. at 1.33 inches)
Installed Height Intake 45.2 mm (1.78 inches)
Installed Height Exhaust 45.2 mm (1.78 inches)