What is the torque data for the BMW N55 engine bolts?

[NicoleLee]

The tightening torque for the crankshaft bearing bolts of this model is 120 Nm. Adjust the torque wrench to 120 Nm and tighten accordingly. Below is an introduction to maximum torque: 1. Concept: Maximum torque generally occurs in the mid to low RPM range of the engine. As RPM increases, torque tends to decrease. The unit of torque is Newton-meters (N·m) or kilogram-meters (kg·m). 2. Relation: The maximum torque of an engine is related to the design of its intake system, fuel system, and ignition system. At a certain RPM, when these systems are optimally matched, maximum torque is achieved. Additionally, engine power, torque, and RPM are interconnected, with the specific relationship being: Power = K × Torque × RPM, where K is a conversion factor. 3. Selection: When choosing an engine, it is also important to consider how to use it reasonably without wasting its capabilities. For example, in Beijing, where air conditioning is necessary in both summer and winter, the engine power should not be too small. However, if the car is only used for commuting on urban ring roads, there is no need to choose an overly powerful engine. Strive for an economical and reasonable engine selection.