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Valve Spring

Valve Spring
Free Length (Approx.) 45.63 mm (1.7965 in.)
Spring Force
Valve Closed 249 - 284 N @ 38.0 mm (56.0 - 64.0 lbs. @ 1.4961 in.)
Valve Open
Intake 658 - 721 N @ 29.0 mm (147.9 - 162.1 lbs. @ 1.1417 in.)
Exhaust 614 - 671 N @ 30.0 mm (138.0 - 150.8 lbs. @ 1.1811 in.)
Number of Coils 7.35
Wire Diameter 3.861 mm (0.1520 in.)
Installed Height * 38.0 mm (1.4961 in.)

* Spring seat to bottom of retainer