Engine Block: Crankshaft: Notes

The N62 uses an inductively hardened cast-iron crankshaft. The crankshaft has five main bearings (familiar 4 bolt cast iron caps) and is hollowed around bearing journals 2, 3, and 4 for weight reduction. The fifth bearing is also the "thrust" bearing.

The crankshaft stroke for the B44 is 82.7 mm.

Fig 1: Identifying Crankshaft Sprocket And Hollowed Area

Courtesy of BMW OF NORTH AMERICA, INC.