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

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Valve Spring

GENERAL SPECIFICATIONS
Valve Springs Compression Pressure (N @ Spec. Length)
Intake 680 N @ 30.19 mm (153 lbs @ 1.18 in)
Exhaust 680 N @ 30.19 mm (153 lbs @ 1.18 in)
Free Length (Approximate)
Intake 46.8 mm (1.84 in)
Exhaust 46.8 mm (1.84 in)
Installed Pressure (N @ Spec. Length)
Intake 228 N @ 39.99 mm (51 lbs @ 1.57 in)
Exhaust 228 N @ 39.99 mm (51 lbs @ 1.57 in)
Service Limit 10% Pressure Loss @ 30.09
Out of Square Limit 1%