Valve Spring

valve Spring Free Length 51.3 mm (2.02 inch)
Valve Spring Installed Height - Exhaust 42.92-43.43 mm (1.67-1.70 inch)
Valve Spring Installed Height - Intake 42.92-43.43 mm (1 67-1.70 inch)
Valve Spring Pressure - Closed 338-374 N at 43.2 mm (76-84 lb at 1.70 inch)
Valve Spring Pressure - Open 832-903 N at 32.3 mm (187-203 lb at 1.27 inch)