Crankshaft Main Bearing

Main Bearing Journal Diameter - Journal Grade
0 51.985-51.988 mm (2.0466-2.0467 in.)
1 51.982-51.985 mm (2.0465-2.0466 in.)
2 51.979-51.982 mm (2.0464-2.0465 in.)
3 51.976-51.979 mm (2.0462-2.0464 in.)
4 51.973-51.976 mm (2.0461-2.0462 in.)

Journal Out-of-Round (Max.) 0.005 mm (0.0001 in.)

Journal Taper (Max.) 0.06 mm (0.002 in.)

End Play 0.05-0.25 mm (0.0019-0.0098 in.)

Wear Limit 0.30 mm (0.0118 in.)

MAIN BEARING

Main bearing diametrical clearance 0.028-0.048 mm (0.0011-0.0018 in.)
Main bearing diametrical clearance (Max) 0.058 mm (0.0022 in.)

Main Baring Selection Chart







There are three different size bearings available. The bearing class is read downward from top and corresponds to the front journal to the rear journal on the bottom.

UPPER MAIN BEARING SELECTION







Main Bearing Cap






CAUTION: There are different sets main bolts supplied with this engine. Each bolt set has a different torque value and engine damage could result if bolts are not torqued correctly. The bolts are not interchangeable.







If your bolt heads look like this (1,2), go to step A. If your bolt heads do not look like this (1,2), go to step B.

A. Tighten bolts using a three step method, in the sequence shown.
- Tighten bolts to 15 Nm (11 ft. lbs.)
- Tighten bolts to 27 Nm (20 ft. lbs.)
- Rotate an additional 45°.

B. Tighten bolts using a three step method, in the sequence shown.
- Tighten bolts to 15 Nm (11 ft. lbs.)
- Tighten bolts to 45 Nm (33 ft. lbs.)
- Rotate an additional 45°.