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Valve Spring

Free Length 1.663 Inch (in)
Force required to compress (Valve Closed) 47 - 52 at 1.377 Pound Force At Inch (lbf @ in)
Force required to compress (Valve Open 130 - 142 at 0.964 Pound Force At Inch (lbf @ in)
Installed Height 1.377 Inch (in)