Measurement Specifications

CRANKSHAFT ASSEMBLY:
Out-of-True: [1]
Max 0.025 mm (0.01 in)
Crankshaft:
Axial clearance:
max 0.080-0.270 mm (0.0032-0.0106 in)
Radial clearance:
main bearings 0.024-0.072 mm (0.0009-0.0028 in)
Conn Rod Bearings:
Radial clearance 0.023-0.067 mm (0.0009-0.0026 in)

MAIN BEARING JOURNALS:
Out-of-Round:
max 0.004 mm (0.00016 in)
Taper:
max 0.004 mm (0.00016 in)
Diameter:
standard 63 mm (63.987-63.000 mm) 2.4803 in (2.4701-2.4803 in)
undersize 1 62.75 mm (62.737-62.750 mm) 2.4705 in (2.4700-2.4705 in)
undersize 2 62.50 mm (62.487-62.500 mm) 2.4606 in (2.4601-2.4606 in)
Bearing Recess Width 22.9-25.1 mm (0.902-0.988 in)
Width on crankshaft for flange bearing shell:
standard 31.96-32.00 mm (1.258-1.260 in)
oversize 1 32.21-32.25 mm (1.268-1.270 in)
oversize 2 32.46-32.50 mm (1.278-1.280 in)

CONNECTING ROD BEARING JOURNALS:
Out-of-Round:
max 0.004 mm (0.00016 in)
Taper:
max 0.004 mm (0.00016 in)
Diameter:
standard 49.00 mm (48.984-49.005 mm) 1.9291 in (1.9285-1.9293 in)
undersize 1 48.75 mm (48.734-48.755 mm) 1.9193 in (1.9187-1.9195 in)
undersize 2 48.50 mm (48.484-48.505 mm) 1.9094 in (1.9088-1.9096 in)
Bearing Recess Width 23.9-26.1 mm (0.94-1.03 in)



NOTE: Main Bearings: Main bearings are made by two different manufacturers. Upper and lower bearing halves in a bearing should be from the same manufacturer. Connecting Rod Bearings: At manufacture, sized bearing halves are used. They are color coded, red-yellow-blue. They are marked according to one of the following alternatives:
Alt 1: Both bearing halves marked yellow.
Alt 2: One bearing half marked blue and one red. The bearing half marked blue is located in the connecting rod and the red one in the cap. Note, that for Spare Parts only yellow marked bearings are used.



[1] Support crankshaft two outer main bearings on V blocks. Rotate crankshaft one turn and measure out-of-true on center journal.