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Home >> Jeep >> 2005 >> TJ (CANADA) L6-4.0L >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Cylinder Block Assembly >> Piston, Engine
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Piston, Engine

PISTONS
Weight (Less Pin) 417 - 429 Grams (14.7 - 15.1 oz.)
Piston Pin Bore Diameter 23.650 - 23.658 mm (0.9312 - 0.9315 inch)
Piston Pin To Bore (Centerline To Piston Top) 40.61 - 40.72 mm (1.599 - 1.603 inch)
Piston To Bore Clearance 0.018 - 0.038 mm (0.0008 - 0.0015 inch)
Piston Ring Groove Height
Compression Rings 1.530 - 1.555 mm (0.0602 - 0.0612 inch)
Oil Control Rings 4.035 - 4.060 mm (0.1589 - 0.1598 inch)
Piston Ring Groove Diameter
No. 1 Compression 88.39 - 88.65 mm (3.48 - 3.49 inch)
No. 2 Compression 87.63 - 87.88 mm (3.45 - 3.46 inch)
No. 3 Oil Control 89.66 - 89.92 mm (3.53 - 3.54 inch)

PISTON PINS
Piston To Pin Clearance 0.0102 - 0.0208 mm (0.0005 - 0.0009 inch)
Diameter 23.637 - 23.640 mm (0.9306 - 0.9307 inch)
Piston-Pin To Connecting Rod (Press Fit) 8.9 kN 2000 ft. lbs.
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