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: Specifications

Compression pressure loaded 83.0 at 29.27 Newton At Millimeter (N @ mm)
Compression pressure unloaded 350 at 39.53 Newton At Millimeter (N @ mm)
Free length (approximate) 52.4 Millimeter (mm)
Installed spring height 39.53 Millimeter (mm)
Valve springs assembled height 39.53 Millimeter (mm)
Service limit, pressure lost @ specified height % 5
Valve springs 4.3