Valve Spring

VALVE SPRINGS
Free Length Inner (Approximately) 48.59 mm (1.913 inch)
Free Length Outer (Approximately) 50.24 mm (1.978 inch)

SPRING TENSION (VALVE CLOSED)
Inner 169 - 187 N @ 38.33 mm (38 - 42 lbs. @ 1.509 inch)
Outer 271 - 289 N @ 43.41 mm (61 - 61 lbs. @ 1.709 inch)

SPRING TENSION (VALVE OPEN)
Inner 427 - 463 N @ 24.99 mm (96 - 104 lbs. @ 0.984 inch)
Outer 854 - 925 N @ 30.07 mm (192 - 208 lbs. @ 1.184 inch)

VALVE SPRINGS NUMBER OF COILS
Inner 3.35 Left Hand Twist
Outer 5.5 Right Hand Twist

INSTALLED HEIGHT (SPRING SEAT TO BOTTOM OF RETAINER)
Inner 37.01 mm (1.457 inch)
Outer 42.09 mm (1.657 inch)