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Home >> Subaru >> 1989 >> XT 1.8 5 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 1.8L 4-CYL & 1.8L 4-CYL Turbo - VINS [4,5,7] >> Engine Specifications >> Valves & Valve Springs Specifications

Valves & Valve Springs Specifications

VALVES & VALVE SPRINGS SPECIFICATIONS

Application In. (mm)
1.8L
Intake
Head Diameter n/a
Stem Diameter
Intake .2736-.2742 (6.950-6.965)
Exhaust .2734-.2740 (6.945-6.960)
Face Angle 45°
Minimum Margin (4) .031 (.80)
Maximum Refinish (5) 4.2354 (107.58)
Springs
Free Length (1) 1996 (50.70)
Out-Of-Square .087 (2.20)
Installed Height n/a
Pressure: Lbs. @ In. (Kg @ mm)
Valve Closed (2) 46-54@1.63 (21-24@41.5)
Valve Open (3) 113-130@1.24 (51-59@31.5)
(1) Outer spring. Inner spring is 1.980" (50.30mm).
(2) Outer spring. Inner spring is 20-23 lbs. @ 1.516" (9-10kg @ 38.5mm).
(3) Outer spring. Inner spring is 45-52 lbs. @ 1.122" (21-24kg @ 28.5mm).
(4) Non-Turbo. Turbo engine is .051" (1.3mm).
(5) Non-Turbo. Turbo engine is 4.256" (108.10mm).