Grand Cherokee 4WD V8-4.7L (2003)
Valve Spring: Specifications
VALVE - SPRING
Free Length (Approximately)
Intake and Exhaust ........................................................................................................................................................................... 48.6 mm (1.9134 in.)
Spring Force (Valve Closed)
Intake and Exhaust ............................................................................................ 315.5 - 352.5 N @ 40.89 mm (70.92722 - 79.24515 lbs. @ 1.6099 in.)
Spring Force (Valve Open)
Intake and Exhaust .............................................................................................. 786.0 - 860.0 N @ 29.64 mm (176.6998 - 193.3357 lbs. @ 1.167 in.)
Number of Coils
Intake and Exhaust ...................................................................................................................................................................................................... 6.69
Wire Diameter
Intake and Exhaust ....................................................................................................................................... 4.2799 - 4.3561 mm (0.1685 - 0.1715 in.)
Installed Height (Spring Seat to Bottom of Retainer) Nominal
Intake ............................................................................................................................................................................................... 40.97 mm (1.613 in.)
Exhaust ............................................................................................................................................................................................ 40.81 mm (1.606 in.)
