Valve Spring

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 lb @ 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 lb @ 1.102 inch)
Valve spring installed pressure-valve closed 244.652 N @ 39.98 mm (55 lb @ 1.574 inch)