Operation CHARM: Car repair manuals for everyone.
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

FREE LENGTH (APPROXIMATELY)
Intake 45.236 mm (1.7809 inch)
Exhaust 45.709 mm (1.7996 inch)

SPRING FORCE (VALVE CLOSED)
Intake 402 - 444 N @ 38.0 mm (90.3 - 99.7 lbs. @ 1.4961 inch)
Exhaust 359 - 397 N @ 38.0 mm (80.7 - 89.3 lbs. @ 1.4961 inch)

SPRING FORCE (VALVE OPEN)
Intake 898 - 972 N @ 29.85mm (201.7 - 218.3 lbs. @ 1.1752 inch)
Exhaust 705 - 763 N @ 31.47 mm (158.5 - 171.5 lbs. @ 1.239 inch)

NUMBER OF COILS
Intake 6.89
Exhaust 6.90

COLOR OF SPRING (TOP OF COILS)
Intake (Right Hand Coil Direction) White
Exhaust (Left Hand Coil Direction) Pink

WIRE DIAMETER
Intake 4.29 - 4.34 mm (0.1689 - 0.1709 inch)
Exhaust 4.16 - 4.22 mm (0.1638 - 0.1661 inch)

GENERAL
*Installed Height 38.0 mm (1.4961 inch)

*NOTE: Spring Seat to Bottom of Retainer.