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Valve Spring

>>DESCRIPTION<< >>SPECIFICATION<<
>>Metric<< >>Standard<<
Free Length-Type A 51.1 mm 2.02 in.
Wire Diameter Type A 4.20-4.28 mm 0.15-0.19 in.
Number of Coils Type A 7.0
Spring Tension (Valve Closed) Type A 376.4-424.4 N @ 41.9 mm 84.6-95.4 lbs. @ 1.65 in.
Spring Tension (Valve Open) Type A 884.9-983.3 N @ 30.4 mm 199.0-221.0 lbs. @ 1.22 in.
Installed Height 41.1-42.7 mm 1.61-1.68 in


Description Specification
Metric Standard
Free Length - Intake AND Exhaust (Approx.) 52.5 mm 2.067 in.
Spring Force - Intake AND Exhaust (Valve Closed) 295 ± 13 N @ 40.0 mm 66 ± 3 lbs. @ 1.57 in.
Spring Force - Intake (Valve Open) 688 ± 31 N @ 10.3 mm 155 ± 7 lbs. @ 0.4055 in.
Spring Force - Exhaust (Valve Open) 676 ± 30 N @ 10.0 mm 152 ± 6 lbs. @ 0.3937 in.
Number of Coils - Intake AND Exhaust 9.35
Wire Diameter - Intake AND Exhaust 3.18 x 3.99 mm (ovate) 0.125 x 0.157 in. (ovate)
Installed Height - Intake AND Exhaust (Spring seat top to bottom of retainer) 40.0 mm 1.575 in.
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