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)

Or, hide this message: temporarily or permanently

Valve Spring

Pressure Intake (N @ Spec. Length) 720-800 N @ 28.02 mm
Exhaust (N @ Spec. Length) 720-800 N @ 28.02 mm
Valve Spring Free Length Intake 53.37 Millimeter (mm)
Exhaust 53.37 Millimeter (mm)
Valve Spring Installed Pressure N @ Spec. Length Intake 287.19-321.19 N @ 42.56 mm
Exhaust 287.19-321.19 N @ 42.56 mm
Valve Springs Installed Pressure N @ Spec. Length -Service Limit Intake 5% Pressure Loss @ 28.80 mm
Exhaust 5% Pressure Loss @ 28.80 mm
Valve Springs-Out of Square Limit Intake 2.0 degrees
Exhaust 2.0 degrees