System Specifications
Cylinder BlockCylinder bore diameter 96.813 mm (3.81 inch)
Cylinder bore maximum taper 0.050 mm (0.002 inch)
Cylinder bore maximum out-of-round-limit 0.025 mm (0.001 inch)
Cylinder bore maximum out-of-round-service limit 0.050 mm (0.002 inch)
Main bearing bore inside diameter 68.905 mm (2.713 inch) 68.885 mm (2.712 inch)
Camshaft bearing bore inside diameter-No. 1 55.689-55.664 mm (2.192-2.191 inch)
Camshaft bearing bore inside diameter-No. 2 and No. 3 55.308-55.283 mm (2.177-2.176 inch)
Camshaft bearing bore inside diameter-No. 4 55.684-55.664 mm (2.192-2.191 inch)
Head gasket surface flatness 0.08 mm (0.003 inch) in 152.0 mm (6.00 inch)
Head gasket surface finish (RMS) 2.0 @ 0.85.5 @ 2.5
Piston and Connecting Rod
Piston diameter-coded red 96.795-96.782 mm (3.81082-3.81031 inch)
Piston diameter-coded blue 96.808-96.795 mm (3.81133-3.81082 inch)
Piston diameter-coded yellow 96.821-96.808 mm (3.81184-3.81133 inch)
Piston-to-cylinder bore clearance (uncoated clearance) 0.018-0.044 mm (0.00071-0.00173 inch)
Piston ring end gap-compression (top, in gauge) 0.17-0.33 mm (in)
Piston ring end gap-compression (bottom, in gauge) 0.3-0.55 mm (in)
Piston ring end gap-oil ring (steel rail, in gauge) 0.15-0.65 mm (0.006-0.026 inch)
Piston ring groove width -compression (top and bottom) 1.54-1.52 mm (0.0606-0.0598 inch)
Piston ring groove width -oil 3 05-3.03 mm (0.12001 -0.11929 inch)
Piston ring width-compression (top and bottom) 1.460-1.490 mm (0.05748-0.05866 inch)
Piston ring width-oil ring Side seal, snug fit
Piston ring-to-groove clearance-1st ring 0.030-0.080 mm (0.00118-0.00315 inch)
Piston ring-to-groove clearance-2nd ring 0.030-0.080 mm (0.00118-0.00315 inch)
Piston pin bore diameter 23.014-23.018 mm (0.90606-0.90622 inch)
Piston pin diameter 23.000-23.003 mm (0.90551-0.90563 inch)
Piston pin length 63.55-63.05 mm (2.5096-2.4823 inch)
Piston pin-to-piston fit 0.011-0.018 mm (0.00043-0.00071 inch)
Piston-to-connecting rod clearance Press fit 8 kilo-newtons (1,800 lbs)
Connecting rod pin bore diameter 22.94-22.98 mm (0.90315-0.90472 inch)
Connecting rod length (center-to-center) 154.66-154.74 mm (6.08896-6.09211 inch)
Connecting rod maximum allowable bend 0.04 per 25 mm (0.0016 per inch)
Connecting rod maximum allowable twist 0.059 per 25 mm (0.002 per inch)
Connecting rod bearing bore diameter 61.635-61.655 mm (2.4266-2.4274 inch)
Connecting rod bearing-to-crankshaft clearance-desired 0.025-0.035 mm (0.001 -0.0014 inch)
Connecting rod bearing-to-crankshaft clearance-allowable 0.022-0.069 mm (0.00086-0.0027 inch)
Connecting rod side clearance (assembled to crank)-standard 0.11-0.49 mm (0.0047-0.01929 inch)
Connecting rod side clearance (assembled to crank)-service limit 0.36 mm (0.014 inch) max.
For torque specifications, refer to the service procedure.