Valve Spring

Valve Spring Free Height:
Intake:
Standard 46.1 mm (1.815 inch)
Limit 45.6 mm (1.795 inch)
Exhaust:
Standard 46.8 mm (1.843 inch)
Limit 46.3 mm (1.823 inch)
Valve Spring Load/Installed Height:
Intake 226 N/40.0 mm (51 lbs./1.57 inch)
Exhaust 284 N/39.6 mm (64 lbs./1.57 inch)
Valve Spring Squareness:
Standard 2° Or Less
Limit 4°