is the rev limit for m44 6500?

[barische]

ok i was flooring the car today and the cars rev limit is at like 6500 rpm is this the stock rev limit or my car has a chip and i dont know about it.
thanks

[PettitWC]

I think that's stock cause that's about where mine is.

[barische]

ok thanks alot, man i love bmws i was at a bmw meet today and had so much fun, now i will try to buy my self a m3 that car is so phat.

[PettitWC]

oh hell yeah, if only i had the money...

[derekva]

The harmonic balancer on the front of M42/M44 motors is only good to ~ 7200RPM. Much higher than that and it grenades and most likely takes the motor with it.

Evidently there are solid harmonic balancers that can handle a higher RPM, but they are S42 parts and probably will cost you your left nut.

-Derek
'95 318i

[robcarync]

...and the right nut just isnt the same without the left...

[John Firestone]

ok i was flooring the car today and the cars rev limit is at like 6500 rpm is this the stock rev limit or my car has a chip and i dont know about it.Yes, that is the stock limit. The red zone begins somewhat earlier to show you the maximum rated, long term engine rpm. Brief excursions to the rev limit shouldn't hurt a well maintained engine if it is fully warmed up and well oiled. Remember that the oil reaches its full temperature some minutes after the water temperature pointer reaches mid scale.

Longer term, staying a prudent distance below the red zone will prolong the engine's life. I run the car at 5100-5200 rpm in V over unrestricted sections of the Autobahn, which is about 20% below the engine's rating.