System Specifications

Bore 90.2 mm (3.55 inch)
Stroke 90.0 mm (3.54 inch)
Compression ratio 9.3:1
Cylinder bore diameter-grade 1 90.200-90.213 mm (3.5512-3.5517 inch)
Cylinder bore diameter-grade 2 90.213-90.226 mm (3.5517-3.5522 inch)
Cylinder bore diameter-grade 3 90.226-90.239 mm (3.5522-3.5527 inch)
Cylinder bore maximum taper 0.006 mm (0.0002 inch)
Cylinder bore maximum out-of-round 0.020 mm (0.0008 inch)
Main bearing bore inside diameter 72.400-72.424 mm (2.850-2.851 inch)
Main bearing journal diameter 67.482-67.504 mm (2.6568-2.6576 inch)
Main bearing journal maximum taper 0.020 mm (0.0007 inch)
Main bearing journal maximum out-of-round 0.05 mm (0.002 inch)
Main bearing journal-to-cylinder block clearance 0.027-0.065 mm (0.0011-0.0026 inch)
Connecting rod journal diameter 52.988-53.003 mm (2.0861-2.0867 inch)
Connecting rod journal maximum taper 0.015 mm (0.0006 inch)
Connecting rod journal maximum out-of-round 0.05 mm (0.0020 inch)
Crankshaft maximum end play 0.130-0.301 mm (0.0051-0.012 inch)
Piston and Connecting Rod
Piston diameter-coded red 1 90.177-90.197 mm (3.550-3.551 inch)
Piston diameter-coded blue 2 90.190-90.210 mm (3.5507-3.5515 inch)
Piston diameter-coded yellow 3 90.203-90.223 mm (3.513-3.5521 inch)
Piston-to-cylinder bore clearance -0.005-0.025 mm (-0.0002-0.0010 inch)
Piston ring end gap-compression (top and bottom) 0.23-0.49 mm (0.010-0.020 inch)
Piston ring end gap-oil ring (steel rail) 0.05-0.66 mm (0.006-0.026 inch)
Piston ring groove width - compression (top) 1.520-1.550 mm (0.060-0.610 inch)
Piston ring groove width - compression (bottom) 1.520-1.530 mm (0.060-0.0602 inch)
Piston ring groove width - oil ring 6.996-7.224 mm (0.275-0.2844 inch)
Piston ring width-compression 1.49-1.47 mm (0.0587-0.0579 inch)
Piston ring width-oil ring rail (2) 0.473-0.447 mm (0.0186-0.0176 inch), 0.483 mm (0.0190 inch) max. at ID
Piston ring width-oil ring expander 2.038-1.960 mm (0.080-0.077 inch)
Piston ring-to-groove clearance-compression 0.030-0.070 mm (0.0012-0.0028 inch)
Piston ring-to-groove clearance-oil ring assembly 0.046-0.196 mm (0.0018-0.0077 inch)
Piston pin bore diameter 22.0015-22.004 mm (0.866-0.8663 inch)
Piston pin diameter 22.0 mm (0.866 inch)
Piston pin length 61.8 mm (2.433 inch)
Piston pin-to-piston fit 0.005-0.010 mm (0.0002-0.0004 inch)
Connecting rod-to-pin clearance 0.015-0.040 mm (0.0006-0.0016 inch)
Connecting rod pin bore diameter 21.959-21.979 mm (0.864-0.865 inch)
Connecting rod length (center-to-center) 150.7 mm (5.93 inch)
Connecting rod maximum allowed bend
Connecting rod maximum allowed twist b +1.016 mm (0.04 inch)
Connecting rod bearing bore diameter 56.756-56.876 mm (2.234-2.24 inch)
Connecting rod bearing-to-crankshaft clearance 0.027-0.069 mm (0.001-0.0027 inch)
Connecting rod side clearance (assembled to crank)-standard 0.015-0.45 mm (0.0006-0.0177 inch)
Connecting rod side clearance (assembled to crank)-service limit 0.05 mm (0.02 inch) max.

b The pin bore and crank bearing bore must be parallel and in the same vertical plane within the specified total difference when measured at the ends of a 203 mm bar, 105.5 mm on each side of rod centerline.





Vertical main bearing cap fasteners and sequence.
Stage 1 40 Nm (30 ft. lbs.)
Stage 2 90°





Side bolts main bearing cap fasteners and sequence.

Crankshaft pulley
Stage 1 90 Nm (66 ft. lbs.)
Stage 2 loosen the bolt.
Stage 3 50 Nm (37 ft. lbs.)
Stage 4 85 - 90°





Connecting rod bolts and sequence
Stage 1 43 Nm (32 ft. lbs.).
Stage 2 105°