Valve Spring

Valve Spring Compression Pressure:
Intake and Exhaust (Installed) 57 - 63 lbs. @ 1.56
Intake and Exhaust:
Valve Open 118 - 132 lbs. @ 1.16
Valve Closed 57 - 63 lbs. @ 1.56
Service Limit 5% Pressure Loss @ Specified Length