Valve Spring

Tension Spring Height
174.6 - 200.1 N (39.2 - 45.0 lbs.) 36.0 mm (1.417 inch)
405.0 - 458.0 N (91.1 - 103.0 lbs.) 28.2 mm (1.110 inch)

Free Length 44.05 mm (1.7342 inch)
Squareness 2.5°, 1.9 mm (0.075 inch)