System Specifications

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 72.401-72.422 mm (2.850-2.851 inch)
Head gasket surface flatness 0.05 mm (0.0020 inch) in any 150 mm x 150 mm (6.0 in x 6.0 inch) area
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 0.012-0.0026 mm (0.0005-0.001 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 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 min (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)
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)

For torque specifications, refer to the service procedure.