I hit rev limiter is that bad??

[Bernanke]

....

[Atticka]

not too bad.....it is if you do it all the time....


thats why there is a rev limiter there, to prevent you from doing damage

[rexconde]

how about in a manual ? If you hit the rev limiter....

I'm only 2 weeks on a MT, got a little ambitious, and it hit the cutoff point. It did cutoff.....

Does it get recorded in the Computer?

[The Beastmaster]

Don't think it'll be recorded in the computer, but maybe you better watch the tach a little more. There is a point where no matter how much revs you're pulling, you can't get more power from the motor. It's best to upshift and get into the powerband again. I remember when I hit the rev limiter on my 528e many years back that forward progress just stopped and you almost went into the windshield. Is that the same?

[rexconde]

Yeah the car just stoped accellerating. I shifted into a higher gear but it waited till I was about 5K RPM, then accellerated again.

What is the optimum shift point for a stock 99 M3

[Bob ///M3]

You did not have your rpm recorded just because you hit the rev-limiter.

Here is a post about the best shift points for a M3..."Stock" as well as with performance enhancing software: Best M3 Shift Points (http://bimmerforums.com/forum/showthread.php?s=&threadid=1126&highlight=shift+point)

I hope this helps!

Bob ///M3

[Stockman]

Some cars record it...

Someone who worked at a porsche shop was laughing because some guy redlined or hit the rev limiter like 400 times

[Bob ///M3]

Maybe I should have said that "if" it was recorded the rpm was within the maximum safe range having been "limited" by the rev-limiter.

Bob ///M3

[rexconde]

I'm still new to MT...

So how can you over rev if there is a RPM cutoff? And what is this about people having over-reved their engines?

I was in 2nd (I think) and it definatly cit off when I hit redline or so. When I shifted to 3rd it took a second for the engine to come back in...

R

[Bob ///M3]

The only way to over-rev the engine is when a mistake is made in shifting and the driver engages a "lower" gear instead of a higher gear when intentionally increasing ground speed...or if the driver downshifts into a gear that is too low for the ground speed the car is going.

The rev-limiter protects the engine as the rpms are climbing, as in accelerating, but can't protect the engine when the transmission is put into a gear that causes the engine to over rev its limit. Put another way; if you were traveling 80mph and engaged 1st gear, by mistake, the engine would extremely over-rev and be damaged.

Other manufacturers of cars have rev-limiters too and they can't protect the engine for the same reason/s. Car makers now have the ability to record in their onboard computers the maximum rpms the engine has reached and also time stamps it with a time in hours since the time in which it happened.

I hope this explains it for you.

Bob ///M3

[rexconde]

Thanks, That explains A LOT. I guess I didnt over-rev the engine then.

[Bob ///M3]

No, you are fine. You can bump it off the rev-limiter all you like and you have nothing to worry about concerning over-revving the engine.

Of course from a performance standpoint it's best to shift "before the rev-limiter takes over.

Bob ///M3




Originally posted by rexconde
Thanks, That explains A LOT. I guess I didnt over-rev the engine then.

[Stockman]

yeah... that nice second you lose kinda screws you over performance wise... and when that happens I usually lose my shifter in the backseat...