F 150 Heritage 2WD Pickup V8-4.6L SOHC VIN W (2004)
Valve Spring: Specifications
Valve spring free length ................................................................................................................................................................... 49.55 mm (1.9508 inch)
Valve spring squareness .......................................................................................................................................................................................... 2 degrees
Valve spring compression pressure .................................................................................................... 587.14 N @ 28.02 mm (131.994 lbs. @ 1.1032 inch)
Valve spring installed height ..................................................................................................................................... 39.7 - 40.3 mm (1.5630 - 1.5866 inch)
Valve spring installed pressure
valve open ............................................................................................................................................. 587.165 N @ 27.99 mm (132 lbs. @ 1.102 inch)
Valve spring installed pressure
valve closed ............................................................................................................................................. 244.652 N @ 39.98 mm (55 lbs. @ 1.574 inch)
