Valve Spring

Free Length 52 mm (2.03 inch)
Pressure Closed 338-374 N at 43 mm (76-84 lbs. at 1.78 inch)
Pressure Open 832-903 N at 32 mm (187-203 lbs. at 1.27 inch)
Installed Height:
Intake 45.2 mm (1.78 inch)
Exhaust 45.2-43.43 mm (1.690-1.710 inch)