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

Valve springs compression pressure intake 680 at 30.19 Newton At Millimeter (N @ mm)
Valve springs compression pressure exhaust 680 at 30.19 Newton At Millimeter (N @ mm)
Free length (approximate) intake 46.8 Millimeter (mm)
Free length (approximate) exhaust 46.8 Millimeter (mm)
Installed pressure intake 228 at 39.99 Newton At Millimeter (N @ mm)
Installed pressure exhaust 228 at 39.99 Newton At Millimeter (N @ mm)
Service Limit 10 percent Pressure Loss at 30.09
Out of square limit % 1