Valve Spring

Free Length
Intake (Approx.) 43.675 mm (1.7195 inch)
Exhaust (Approx.) 44.319 mm (1.7448 inch)
Spring Force
Intake
Valve Closed 309-358 N @ 38.0 mm (69.5-80.5 lbs. @ 1.4961 inch)
Valve Open 836-907 N @ 29.85 mm (188-204 lbs. @ 1.1594 inch)
Exhaust
Valve Closed 314-354 N @ 38.0 mm (71-79 lbs. @ 1.4961 inch)
Valve Open 579-640 N @ 31.47 mm (130-144 lbs. @ 1.239 inch)
Number of Coils
Intake 6.86
Exhaust 7.66
Color of Spring (Top of Coils)
Intake (Right Hand Coil Direction) Orange
Exhaust (Left Hand Coil Direction) Yellow
Wire Diameter
Intake 4.29-4.34 mm (0.1689-0.1709 inch)
Exhaust 4.16-4.22 mm (0.1638-0.1661 inch)
Spring Installed Height (Spring Seat to Bottom of Retainer)
Intake & Exhaust 38.0 mm (1.4961 inch)