System Specifications

CYLINDER BLOCK

Surface Variation
Deck Surface Flatness (Max.) 0.1 mm (0.004 in.)

Cylinder Bore Diameter (Standard) 3.8L 95.993-96.007 mm (3.7792-3.780 in.)
Out of Round (Service Limits) 0.076 mm (0.003 in.)
Taper (Service Limits) 0.051 mm (0.002 in.)

CRANKSHAFT

Main Bearing Journal Diameter 63.987-64.013 mm (2.5192-2.5202 in.)
Journal Out-of-Round (Max.) 0.005 mm (0.0002 in.)
Journal Taper (Max.) 0.003 mm (0.0001 in)
End Play 0.09-0.24 mm (0.0036-0.0095 in.)
Wear Limit 0.381 mm (0.015 in.)
Main Bearing Diametrical Clearance 1-2-3-4 0.011-0.055 mm (0.0005-0.0022 in.)
Wear Limit 0.076 mm (0.003 in.)

Bearing shells are available in standard and the following undersizes: 0.025 mm (0.001 in.) and 0.254 mm (0.010 in).

MAIN BEARING

Main Bearing Journal Diameter 63.987-64.013 mm (2.5192-2.5202 in.)
Journal Out-of-Round (Max.) 0.005 mm (0.0002 in.)
Journal Taper (Max.) 0.003 mm (0.0001 in.)
Main Bearing Diametrical Clearance 1-2-3-4 0.011-0.055 mm (0.0005-0.0022 in.)
Wear Limit 0.076 mm (0.003 in.)

Crankshaft Main Bearing Cap - Bolts 41 Nm + 1/4 turn (30 ft.lbs. + 1/4 turn)
Crankshaft Main Bearing Cap Cross Bolts (3.8L) 61 Nm (45 ft.lbs.)

Bearing shells are available in standard and the following undersizes: 0.025 mm (0.001 in.) and 0.254 mm (0.010 in).

CONNECTING RODS

Bearing Clearance 0.019-0.067 mm. (0.0007-0.0026 in.)
Wear Limit 0.074 mm (0.003 in.)
Side Clearance 0.135-0.405 mm (0.005-0.016 in.)
Wear Limit 0.45 mm (0.017 in.)
Connecting Rod Journal Diameter 57.985-58.005 mm (2.2829-2.2837 in.)

PISTONS

Piston Diameter 3.8L-Measured33.01 mm (1.30 in) From Piston Top 95.968-95.998 mm. (3.778-3.779 in.)
Clearance in Bore @ Size Location (New) -0.005-0.039 mm (-0.0002-0.0015 in.)
Weight 3.8L 426 ± 5 grams (15.03 ± 0.1764 oz.)

PISTON RINGS

Ring End Gap
Top Compression Ring 0.20-0.36 mm (0.008-0.014 in.)
Second Compression Ring 0.30-0.55 mm (0.012-0.022 in.)
Oil Control (Steel Rails) 0.25-0.76 mm (0.010-0.030 in.)
Wear Limit-Compression Rings 0.75 mm (0.030 in.)
Wear Limit-Oil Control Steel Rails 1.88 mm (0.074 in.)

Ring Side Clearance
Top Compression Ring 3.8L 0.030-0.069 mm (0.0012-0.0027 in.)
Second Compression Ring 3.8L 0.041-0.085 mm (0.0016-0.0033 in.)
Oil Ring (Steel Ring) 0.015-0.225 mm (0.0006-0.0089 in.)
Side Clearance Wear Limit- Top Ring 0.10 mm (0.004 in.)
Side Clearance Wear Limit-2nd Ring 0.13 mm (0.005 in.)
Radial Wall Wear Limit Oil Ring Pack 0.038 mm (0.0015 in.)

CRANKSHAFT PULLEY

Crankshaft Damper - Bolt 54 Nm (40 ft. lbs.)