F30POST
F30POST
2012-2015 BMW 3-Series and 4-Series Forum
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > 2012-2019 BMW 3 and 4-Series Forums > General F30 Sedan / F32 Coupe / F36 Gran Coupe Forum > rev limiter for manual transmission cars
Post Reply
 
Thread Tools Search this Thread
      05-10-2012, 03:12 AM   #1
nexusonemeover
First BMW
 
nexusonemeover's Avatar
 
Drives: 2012 328i Sport 6MT
Join Date: Mar 2012
Location: Cleveland, OH

Posts: 115
iTrader: (0)

rev limiter for manual transmission cars

While dicking around with my car, 328i with 6MT, I realized that with the car in neutral the engine will rev to red line. However, with car in gear, but clutch depressed, the car revs to about 3000 rpm, drops to about 2000 and will only go back to about 3000 rpm unless significantly more pressure on accelerator pedal is used. Even then, it still wont redline... gets to just over 4000 or so.

I tried to think about why this might be. First thought is that its protective for the clutch... for those clutch dumpers... at only 3000 rpm, the clutch will last longer than dumping at redline. But, then I thought about those exotic supercars that have a launch control feature. Those cars rev the engine at 0 mph and then release of brake causes the poop shoot to give out requiring new underwear.

Do our BMWs have a launch control of some type, or was my first thought, clutch protection, more correct?

I have not tried dumping the clutch at all... but if the car is designed to handle dumping at 3000 rpm, I shall be doing so with great joy.
nexusonemeover is offline   United_States
0
Reply With Quote
      05-10-2012, 07:27 AM   #2
Feanor
Lieutenant
 
Drives: BMW F30 320d Luxury 6MT
Join Date: Feb 2012
Location: United Kingdom

Posts: 408
iTrader: (0)

This seems to be fairly normal. I found that my 118D did the same thing and started a thread on a generalist car forum and the response was that many other new cars do the same thing these days.

I also asked my dealer and his response was basically that there's no sense in revving a diesel when pulling away as the torque is greatest at low revs. With the petrol, I'm not sure.
Feanor is offline  
0
Reply With Quote
      05-10-2012, 08:34 AM   #3
mocohead
First Lieutenant
 
Drives: 2012 328i (ED)/ 2011 328i (ED)
Join Date: Sep 2010
Location: CA

Posts: 397
iTrader: (0)

My impression is the rev limit in gear with clutch depressed is intended to protect the drive line from undue abuse.
mocohead is offline  
0
Reply With Quote
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 11:26 PM.




f30post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST