Valve Spring

Free Length:
Standard 36.83 mm (1.4500 inch)
Minimum Limit 35.67 mm (1.4043 inch)
Preload 10.7-12.5 kg at 31.5 mm (23.6-27.5 lbs at 1.24 inch)
Side Clearance (Max) 2.0 mm (0.079 inch)