Valve Spring

Free Length
Standard
Intake [01]
Exhaust [02]
Service Limit
Intake [03]
Exhaust 1.612 inches
[01] -- Outer Nihon Hatsujo, 1.616 inches; inner Nihon Hatsujo, 1.424 inches; Chuo Hatsujo, 1.425 inches.
[02] -- Nihon Hatsujo, 1.6520 inches; Chuo Hatsujo, 1.6510 inches.
[03] -- Outer Nihon Hatsujo, 1.5850 inches; Chuo Hatsujo & inner Nihon Hatsujo, 1.3900 inches.