Valve Spring: Specifications

Valve Spring
Free height standard
Intake 44.84 - 45.34 mm (1.7654 - 1.7850 in.)
Exhaust 45.28 - 45.78 mm (1.7827 - 1.8024 in.)
Pressure standard at height
Intake and Exhaust 151 - 175 N (15.4 - 17.8 kg, 34 - 39 lb) at 35.30 mm (1.390 in.)
Out-of-square 1.9 mm (0.0748 in.)
Installation height
Intake 35.30 mm (1.390 in.)
Exhaust 35.30 mm (1.390 in.)
Installation load
Intake 151 N (15.4 - 17.8 kg - force, 34 - 39 lb - force)
Exhaust 151 N (15.4 - 17.8 kg - force, 34 - 39 lb - force)
Height during valve open
Intake 24.94 mm (0.9819 in.)
Exhaust 26.39 mm (1.0390 in.)
Load with valve open
Intake 358 - 408 N (36.5 - 41.6 kg - force, 80 - 92 lb - force)
Exhaust 325 - 371 N (33.1 - 37.8 kg - force, 73 - 83 lb - force)