My 2012 BMW 650i Engine is locked up!

[rockflite]

My shop is replacing my motor in my 650i Convertible. I locked it up with my music loud and didn’t realize the tranny was in manual shift. The engine redlined before I knew it and locked up the motor.

Looking for a electronic after market mod “Rev Limiter” of some type as preventative measure. Anyone have any suggestions? This was painful but preventable! $$$$$$$

[White94RX]

The engine in stock form is equipped with a rev limiter. You didn't lock it up because you redlined it. If that was the case, engines would lock up on a daily basis. It locked up because the N63 engine is a piece of crap, and it likes to spin rod bearings, as well as consume oil.

It is not possible to over-rev a BMW engine in an automatic, or even a manual trans. The only way to "money shift" is with a manual transmission, and downshift into the wrong gear at speeds way in excess of what that gear is capable of.

I hope your shop is experienced, capable, and well trained. I've seen so many of these engines be replaced at a non-competent shop, and they never run right again.