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Home >> Jeep >> 1998 >> Wrangler 4WD L6-4.0L VIN S >> Repair and Diagnosis >> Specifications >> Mechanical Specifications >> Engine >> Cylinder Block Assembly >> Piston, Engine
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Piston, Engine

Pistons
Weight (Less Pin) 563 to 567 grams (19.86 to 20.00 oz.)
Piston Pin Bore (Centerline to Piston Top) 40.61 to 40.72 mm (1.599 to 1.603 in.)
Piston-to-Bore Clearance 0.033 to 0.053 mm (0.0013 to 0.0021 in.)
Piston-to-Bore Clearance (Preferred) 0.033 to 0.038 mm (0.0013 to 0.0015 in.)
Piston Pin Bore Diameter 23.647 to 23.655 mm (0.09310 to 0.9313 in.)