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

DIMENSIONS
Valve Spring Compression Pressure at Specified Height
Intake 190-210 lbs. at 1.20 inches 74-82 lbs. at 1.78 inches
Exhaust 190-210 lbs. at 1.20 inches 76-84 lbs. at 1.60 inches
Valve Spring Free Length
Intake 52.324 mm (2.06 inch)
Exhaust 47.452 mm (1.88 inch)
Valve Spring Assembled Height
Intake 44.45-45.974 mm (1.75-1.81 inch)
Exhaust 40.132-41.656 mm (1.58-1.64 inch)
Valve Spring Out of Square 1.98 mm (0.078 inch)