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Home >> Nissan-Datsun >> 1987 >> Sentra Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 1 (3.0L V6 - VIN [H] & 3.0L V6 Turbo - VIN [C]) >> Engine Specifications >> Valve Spring Specifications

Valve Spring Specifications

WARNING: This page is about a different car, the 1988 Nissan 300ZX. However, it is still accessible from the selected car via links, so may be relevant.
VALVE SPRING SPECIFICATIONS

Application In. (mm)
Outer (1)
Free Length 2.016 (51.20)
Pressure Lbs @ In (Kg @ mm) 117.7@1.181 (53.0@30.0)
Installed Height 56.2 @ 1.575 (25.5 @ 40)
Inner
Free Length 1.736 (44.1)
Pressure Lbs @ In (Kg @ mm) 57.3@0.9840 (26@25)
Installed Height 24.3 @ 1.378 (11.0 @ 35.0)
(1) Valve spring squareness must be less than .087" (2.20 mm) for Outer spring and .075" (1.90 mm) for Inner spring.