Valve Spring

Valve Spring Free Length 51.3 mm (2.02 inch)
Valve Spring Installed Height
Exhaust 42.92 - 43.43 mm (1.67 - 1.70 inch)
Intake 42.92 - 43.43 mm (1.67 - 1.70 inch)
Valve Spring Pressure
Closed 338 - 374 N at 43.2(76 - 84 lbs. at 1.70)
Open 832 - 903 N at 32.3 (187 - 203 lbs. at 1.27)