Valve Spring

Valve Springs Compression Pressure (Lb. @ Spec. Length)
Intake and Exhaust (Installed Load) 71-79 @ 1.52 inch
Intake and Exhaust (Non Turbo) (Open) 128.1-141.6 @ 1.12 inch
Intake and Exhaust (Non Turbo) (Closed) 66.5-73.5 @ 1.52 inch
Intake and Exhaust (Turbo) (Open) 151.9-165.9 @ 1.12 inch
Intake and Exhaust (Turbo) (Closed) 71.3-78.7 @ 1.52 inch
Free Length (Approximate) 1.877 inch
Assembled Height 1-17/32" - 1-19/32"
Service Limit 5% Pressure Loss @ Specified Length
Out of Square Service Limit 5/64 (0.078) inch