►BMW’s N55 took over from one of the most revered engines to come out of Bavaria. It simplified shortcomings and improved upon a winning formula to become a driving force in BMW's engine lineup. But what happens when one goes catastrophically wrong?

If you’ve found yourself on the wrong side of a spun bearing like plenty of BMW owners do, you’re likely out of an engine without really knowing exactly what went wrong. Wonder no longer as our BMW Catalog Manager breaks down an N55 engine that suffered from a spun rod bearing.

Tag along as Gareth strips down the engine core and takes a look at the components inside. See how a momentary lapse in oil supply can heat the engine’s components beyond their limit until they break, destroying nearly the entire engine along with it. Within the carnage, however, are some things to gain. Learn how the VANOS system and Valvetronic system rely on oil supply to perform and how their advancements made the N55 one of the most advanced engines on the market in its time. All of that and more, right here with FCP Euro.

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