Cylinder Block Assembly: Specifications
Cylinder BlockDisplacement 4.6L (4V) (281 CID)
Number of cylinders 8
Bore 90.2 mm (3.55 inch)
Stroke 90.0 mm (3.54 inch)
Compression ratio 8.5:1
Cylinder bore diameter 90.2-90.239 mm
Cylinder bore maximum taper 0.016 mm
Cylinder bore maximum out-of-round 0.016 mm
Main bearing bore diameter 72.402-72.422 mm
Head gasket surface flatness 0.15 mm (0.006 inch) max.overall
Crankshaft
Main bearing journal diameter 67.493 mm
Main bearing journal maximum taper 0.05 mm
Main bearing journal maximum out-of round 0.05 mm
Main bearing journal-to-cylinder block clearance 0.023-0.055 mm
Connecting rod journal diameter 56.866-56.886 mm
Connecting rod journal maximum taper 0.004 mm (0.0002 inch)
Connecting rod journal maximum out-of-round 0.004 mm (0.0002 inch)
Crankshaft maximum end play 0.130-0.301 mm
Thrust bearing journal diameter 67.493 mm
Thrust bearing journal maximum out-of round 0.05 mm
Thrust bearing journal maximum taper 0.05 mm
Thrust bearing journal length 17.725-17.775 mm
Crankshaft Main Bearing Cap Fasteners
Install the vertical main bearing cap fasteners and tighten in the sequence shown, in two stages.
Stage 1: Tighten to 40 Nm (30 ft. lbs.).
Stage 2: Tighten an additional 90 degrees.
Tighten the jack screws against the cylinder block in the sequence shown, in two stages.
Stage 1: Tighten to 5 Nm (44 inch lbs.)
Stage 2: Tighten to 10 Nm (89 inch lbs.)
Install the side bolts and tighten 21 Nm 15 ft.lbs.
Check the crankshaft end play.
Piston and Connecting Rod
Piston diameter 90.180-90.191 mm
Piston-to-cylinder bore clearance -0.010/+0.026 mm
Piston ring end gap-compression (top) 0.30 mm
Piston ring end gap-compression (bottom) 0.50 mm
Piston ring end gap-compression (oil ring) 0.65 mm
Piston ring groove width-compression (top) 1.53-1.549 mm
Piston ring groove width-compression (bottom) 1.519-1.539 mm
Piston ring groove width-oil ring 3.031-3.055 mm
Piston ring width-compression (top) 1.47-1.49 mm
Piston ring width-compression (bottom) 1.47-1.49 mm
Piston ring width-oil ring 2.854-2.984 mm
Piston ring-to groove clearance-compression (top) 0.04-0.079 mm
Piston ring-to groove clearance-compression (bottom) 0.029-0.069 mm
Piston ring-to groove clearance-oil ring 0.047-0.201 mm
Piston pin bore diameter 22.0042-21.998 mm
Piston pin diameter 21.991-29.994 mm
Piston pin length 61.60-62.03 mm
Piston pin-to-piston fit 0.0058-0.0132 mm
Connecting rod-to-pin clearance 0.018-0.033 mm
Connecting rod pin bore diameter 22.012-22.024 mm
Connecting rod length 150.7 mm
Connecting rod maximum allowed bend 0.038 mm per 25 mm
Connecting rod maximum allowed twist 0.050 mm per 25 mm
Connecting rod bearing bore diameter 56.866-56.886 mm
Connecting rod bearing-to-crankshaft clearance 0.027-0.069 mm
Connecting rod side clearance 0.15-0.45 mm
Connecting rod bearing caps and bolts
Stage 1: Tighten to 25 Nm (18 ft. lbs.)
Stage 2: Tighten to 80 Nm (59 ft. lbs.)
Check the connecting rod bearing clearance.
Crankshaft Pulley
Stage 1: Tighten to 90 Nm (66 ft. lbs.)
Stage 2: Loosen the bolt one full turn.
Stage 3: Tighten to 50 Nm (37 ft. lbs.)
Stage 4: Tighten an additional 90 degrees.