Racing engine having trimetal bearings with a thick overlay for high speed and/or high load applications

摘要

A racing engine is provided for use in extremely high speed and/or high load applications such as drag racing. The engine includes an engine block and a crankshaft disposed within the engine block. The engine also includes a bearing disposed about and rotatably journalling the crankshaft. The bearing is of the trimetal type and has a steel backing layer, an intermediate layer, and an overlay layer. In accordance with the present invention, the overlay layer has a thickness of at least 38 m (0.0015 inches), and preferably about 51 m (0.002 inches).