System Specifications
CYLINDER BLOCKCylinder Bore Diameter 86.0 mm ±0.0076 (3.3859 inch ±0.0003)
Out of Round (Max.) 0.076 mm (0.003 inch)
Taper (Max.) 0.051 mm (0.002 inch)
CRANKSHAFT MAIN BEARING JOURNALS
Diameter 63.49-63.51 mm (2.4997-2.5004 inch)
Bearing Clearance 0.032-0.056 mm (0.0012-0.0022 inch)
Bearing Clearance (Max.) 0.080 mm (0.0031 inch)
Out of Round (Max.) 0.010 mm (0.0004 inch)
Taper (Max.) 0.015 mm (0.0006 inch)
End Play 0.0475-0.2725 mm (0.0019-0.0108 inch)
End Play (Max.) 0.43 mm (0.017 inch)
Crankshaft Main Bearing Cap - Tie Bolts 28 Nm (250 inch lbs.)
Crankshaft Main Bearing Cap - Outer Cap Bolts 27 Nm +1/4 Turn (20 ft. lbs. +1/4 Turn)
Crankshaft Main Bearing Cap - Inner Cap Bolts 20 Nm +1/4 Turn (15 ft. lbs. +1/4 Turn)
The main bearing cap bolts must be tightened in the proper sequence. First the inner main cap bolts, secondly the windage tray bolts, and lastly the main cap tie (horizontal) bolts.
MAIN BEARING SELECTION CHART-2.7L:
CONNECTING ROD JOURNALS
Diameter 53.51-53.49 mm (2.1067-2.106 inch)
Bearing Clearance 0.034-0.070 mm (0.0013-0.0027 inch)
Out of Round (Max.) 0.010 mm (0.0004 inch)
Taper (Max.) 0.015 mm (0.0006 inch)
CONNECTING RODS
Bearing Clearance 0.024-0.064 mm (0.001-0.0026 inch)
Side Clearance 0.13-0.38 mm (0.0052-0.015 inch)
Side Clearance (Max.) 0.4318 mm (0.017 inch)
Piston Pin Bore Diameter 22.007-22.015 mm (0.8665-0.8668 inch)
Bearing Bore Out of Round (Max.) 0.004 mm (0.0002 inch)
Total Weight (Less Bearing) 529.9 ±7 grams 18.6917 ±0.247 oz
PISTONS
Material Aluminum Alloy
Piston Diameter 85.983 mm ±0.019 (3.3851 inch ±0.0017)
Clearance at Size Location 0.0096 to +0.0436 mm (- 0.0003 to +0.0016 inch)
Piston Weight 316-326 grams 11.1466-11.4994 oz.
Piston Ring Groove Diameter-No.1 77.8-78 mm (3.063-3.070 inch)
Piston Ring Groove Diameter-No.2 75.9-76.1 mm (2.988-2.996 inch)
Piston Ring Groove Diameter-No.3 76.5-76.7 mm (3.011-3.019 inch)
PISTON PINS
Type Full Floating
Pin Diameter 21.997-22.000 mm (0.8661-0.8662 inch)
Clearance in Piston 0.005-0.013 mm (0.0002-0.0005 inch)
Clearance in Rod 0.007-0.018 mm (0.0003-0.0008 inch)
PISTON RINGS
Ring Gap-Top Compression Ring 0.20-0.36 mm (0.008-0.014 inch)
Ring Gap-2nd Compression Ring 0.37-0.63 mm (0.0146-0.0249 inch)
Ring Gap-Oil Control (Steel Rails) 0.25-0.76 mm (0.010-0.030 inch)
PISTON RING SIDE CLEARANCE
Compression Ring-Top 0.035-0.083 mm (0.0013-0.0032 inch)
Compression Ring-Second 0.040-0.080 mm (0.0016-0.0031 inch)
Oil Ring (Steel Rails) 0.058-0.204 mm (0.0022-0.0080 inch)
PISTON RING WIDTH
Compression Rings-Top and Second 1.47-1.49 mm (0.0579-0.0587 inch)
Oil Ring (Steel Rails) 0.445-0.470 mm (0.0176-0.0186 inch)
Crankshaft Damper - Bolt 170 Nm (125 ft. lbs.)