System Specifications
Cylinder BlockCylinder bore diameter mm (inch) 100.4 (3.953)
Cylinder bore maximum taper mm (inch) 0.025 (0.001)
Cylinder bore maximum out-of-round mm (inch) 0.025 (0.001)
Main bearing bore inside diameter mm (inch) 60.634-60.620 (2.387-2.387)
Head gasket surface flatness mm (inch) 0.1 (0.004) overall
Head gasket surface finish (RMS) 60-150
Crankshaft
Main bearing journal diameter mm (inch) 56.980-57.0 (2.243-2.244)
Main bearing journal maximum taper mm (inch) 0.008 (0.0003)
Main bearing journal maximum out-of-round mm (inch) 0.008 (0.0003)
Main bearing journal-to-cylinder block clearance mm (inch) -
Connecting rod journal diameter mm (inch) 53.98-54.0 (2.125-2.126)
Connecting rod journal maximum taper mm (inch) 0.008 (0.0003)
Connecting rod journal maximum out-of-round mm (inch) 0.008 (0.0003)
Crankshaft maximum end play mm (inch) 0.05-0.32 (0.002-0.0126)
Main Bearings
Clearance to crankshaft mm (inch) 0.021-0.039 (0.0008-0.0015)
Clearance to crankshaft allowable mm (inch) 0.013-0.048 (0.0005-0.002)
Bearing wall thickness mm (inch) 1.8-1.806 (0.0709-0.0711)
Piston and Connecting Rod
Piston diameter-coded STD mm (inch) 100.380-100.400 3.952-3.9528)
Piston diameter-coded 0.5 mm (inch) 100.880-100.900 (3.972)
Piston diameter-coded 1.0 mm (inch) 101.350-101.370 (3.990-3.991)
Piston-to-cylinder bore clearance mm (inch) 0.030-0.060 (0.0012-0.002)
Piston top ring end gap mm (inch) 0.200-0.450 (0.008-0.018)
Piston bottom ring end gap mm (inch) 0.450-0.700 (0.018-0.028)
Piston top ring groove width mm (inch) 1.64-1.66 (0.0645-0.0654)
Piston bottom ring groove width mm (inch) 1.79-1.81 (0.0705-0.0713)
Piston oil ring groove width mm (inch) 3.5-3.53 (0.1378-0.1399)
Piston top ring width mm (inch) 1.578-1.598 (0.062-0.063)
Piston bottom ring width mm (inch) 1.728-1.74 (0.068-0.069)
Piston top ring-to-groove clearance mm (inch) 0.050-0.082 (0.002-0.0003)
Piston bottom ring-to-groove clearance mm (inch) 0.050-0.082 (0.002-0.003)
Piston pin bore diameter (red) mm (inch) 24.007-24.010 (0.945)
Piston pin bore diameter (blue) mm (inch) 24.010-24.013 (0.945)
Piston pin diameter (red) mm (inch) 23.994-23.997 (0.9446-0.9447) Piston pin diameter (blue) mm (inch) 23.997-24.000 (0.9447-0.9449) Piston pin length mm mm (inch) 72.0-72.8 (2.835-2.866)
Piston pin-to-piston pin fit mm (inch) 0.01-0.016 (0.0004-0.0006) Piston pin-to-connecting rod clearance mm (inch) Press Fit -0.018 to -0.042 (-0.0007 to -0.0017)
Connecting rod pin bore diameter mm (inch) 23.958-23.976 (0.943-0.944)
Connecting rod length mm (inch) 145.965-146.035 (5.746-5.749) Connecting rod maximum allowed bend mm (inch) 0.0125 (0.00049) per 25.4 mm (1.000)
Connecting rod maximum allowed twist mm (inch) 0.038 (0.0015) per 25.4 mm (1.000)
Connecting rod bearing bore diameter mm (inch) 56.82-56.84 (2.237)
Connecting rod bearing-to-crankshaft clearance mm (inch) 0.013-0.048 (0.005-0.002)
Connecting rod side clearance (assembled to crankshaft) mm (inch) 0.092-0.268 (0.0036-0.0106)
c Tighten camshaft bearing cap bolts to 15 Nm (11 ft. lbs.) when measuring journal clearance.
Crankshaft pulley bolts
Tighten the bolt in two stages:
Tighten the bolt to 50 Nm (37 ft. lbs.).
Tighten the bolt an additional 90 degrees.
CAUTION: A new bolt must be used each time it is removed.
Connecting Rod Nuts Install and tighten finger tight.
Tighten the connecting rod nuts in two stages in pairs.
Tighten nuts 20 Nm (15 ft. lbs.).
Tighten nuts additional 90 degrees.
Repeat previous four steps for the remaining connecting rods.
NOTE: The connecting rod bolts and nuts cannot be reused.