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Home >> Isuzu >> 1985 >> Impulse 2.0 F, Standard >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.8L 4-CYL - VIN [B], 1.9L 4-CYL [A], 2.0L 4-CYL [F] >> Engine Specifications >> Valve Spring Specifications

Valve Spring Specifications

VALVE SPRING SPECIFICATIONS

Application In. (mm)
1.8L
Inner
Free Length (1) 1.78 (45.3)
Pressure Lbs. @ In. (Kg @ mm)
Valve Closed 20 @ 1.5 (9.2 @ 38.5)
Valve Open (3)
Outer
Free Length (2) 1.85 (47.0)
Pressure Lbs. @ In. (Kg @ mm)
Valve Closed 35 @ 1.61 (15 @ 41)
Valve Open n/a
1.9L
Free Length (2) 1.89 (48.1)
Pressure Lbs. @ In. (Kg @ mm)
Valve Closed 55 @ 1.6 (25 @ 1)
Valve Open (3)
2.0L
Free Length (4) 1.89 (48.1)
Pressure Lbs. @ In. (Kg @ mm)
Valve Closed 55 @ 1.6 (25 @ 1)
Valve Open (3)
(1) Minimum height is 1.72" (43.8 mm).
(2) Minimum height is 1.79" (45.4 mm).
(3) Intake valves open at 21° BTDC, exhaust valves open at 55° BBDC.
(4) Minimum height is 1.83" (46.5 mm)
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