Bearing Selection

If using a standard bearing, replace it with one having the same number.






If the number of the bearing cannot be determined, select the correct bearing by adding together the numbers imprinted on the connecting rod cap and crankshaft, then selecting the bearing with the same number as the total. There are six sizes of standard bearings. marked "6" and "7"

Reference Connecting rod big end inside diameter.
Mark "1": 55.000-55.006 mm (2.1654-2.1656 inch)
Mark "2": 55.006-55.012 mm (2.1656-2.1658 inch)
Mark "3": 55.012-55.018 mm (2.1658-2.1661 inch)
Mark "4": 55.018-55.024 mm (2.1661-2.1663 inch)

Crankshaft crank pin diameter:
Mark "1": 51.994-52.000 mm (2.0470-2.0472 inch)
Mark "2": 51.988-51.994 mm (2.0468-2.0470 inch)
Mark "3": 51.982-51.988 mm (2.0465-2.0468 inch)

Standard sized bearing center wall thickness:
Mark "2": 1.484-1.487 mm (0.0584-0.0585 inch)
Mark "3": 1.487-1.490 mm (0.0585-0.0587 inch)
Mark "4": 1.490-1.493 mm (0.0587-0.0588 inch)
Mark "5": 1.493-1.496 mm (0.0588-0.0589 inch)
Mark "6": 1.496-1.499 mm (0.0589-0.0590 inch)
Mark "7": 1.499-1.502 mm (0.0590-0.0591 inch)