Valve Spring

Pressure
Closed 316-351 N @ 46.685 mm (71-79 lbs. @ 1.838 inch)
Open 1059-1165 N @ 34.213 mm (238-262 lbs. @ 1.347 inch)
Valve Spring Installed Height (+/- 0.794 mm [0.0312 inch]): 46.685 mm (1.838 inch)