Clutch wear?? - Page 2

Radders · 26-02-2009, 10:19 PM

thanks for all the comments, will get it back out on the road and test it again. could of been the traction control cutting in i guess as it was damp/wet when it happened

dave1 · 27-02-2009, 10:16 AM

i get slur if i change at 4k or 5k but not at full tilt which i find strange

SpineOnABap · 27-02-2009, 10:30 AM

Quote:

Originally Posted by rs32

I noticed this too. what is the reason for the slip at certain revs ?

No idea. Talked about it for five years. Chances are it's initially a software error, but BMW never provided a solution so we're stuck with. Maybe the software not taking into account 'normal usage wear' properly. Then of course if you keep allowed it to slip then you're compounding the problem.
That's the best 'guess' anyway.

Bottom line is it's pretty pants how we never got a permy solution

SMD · 27-02-2009, 10:40 AM

Yes sure is! I always lift a little on gear changes but when going out for a blast sport on S6 and foot to the floor and never lift and its fine!

**AlexGTT** · 28-02-2009, 09:27 AM

The trick is NOT to lift on changes. If you do, the self learn element of the software gets used to relaxed changes and slurring gets worse.

I use the box in S1 to warm up and keep and even throttle on changes up the box. When the engine oil is up to temp I move to the desired mode for my drive (usually S6

). Then, either full throttle shifts or, at mid rev up-shifts just keep an even throttle. Definately no lifting. The change on mine stays very sharp with this treatment.

**glendog74** · 28-02-2009, 09:29 AM

^^^^^^^^ as AlexGTT says, even when not gunning it - don't lift.

rs32 · 28-02-2009, 10:21 AM

there's a lot to learning this SMG gearbox. I'll try what you suggest Alex

I usually use S3, but sometimes 4/5 is better. will try the technique of warming up in 1 then switching.

**DazBlackCSL** · 28-02-2009, 10:55 AM

Really useful info guys , I dont lift , and mines fine all the time , but been told (and ignored them) !

to lift always.

Mate of mine does lift and is having issues with his so makes sense reading this ... just winding him up telling him he cant drive properly

SpineOnABap · 28-02-2009, 11:38 AM

I've never lifted on shifts.

I'm not even sure it actually "adapts" to driving style in sequential mode, or if that's another forum myth..(?)
The regular M3 SMG doesn't start slurring like the CSL one does, even if you drive like grandma.

bryce · 28-02-2009, 11:46 AM

Just stop driving like girls and give the poor thing some death!

26-02-2009, 10:19 PM	#11
Radders S5 - Full Throttle Join Date: Jan 2009 Location: Merseyside Posts: 371 Casino cash: $551	thanks for all the comments, will get it back out on the road and test it again. could of been the traction control cutting in i guess as it was damp/wet when it happened __________________ the CSL, better that a 70k Porsche!

28-02-2009, 09:27 AM	#15
AlexGTT CSL Register Uber-poster! Join Date: Apr 2008 Location: Herefordshire Posts: 4,374 Casino cash: $8572	The trick is NOT to lift on changes. If you do, the self learn element of the software gets used to relaxed changes and slurring gets worse. I use the box in S1 to warm up and keep and even throttle on changes up the box. When the engine oil is up to temp I move to the desired mode for my drive (usually S6 ). Then, either full throttle shifts or, at mid rev up-shifts just keep an even throttle. Definately no lifting. The change on mine stays very sharp with this treatment. __________________ CSL Register Alcoholics Anonymous Group Leader & Businessman of the Year '93! www.earleyengineering.com

28-02-2009, 10:55 AM	#18
DazBlackCSL CSL Register Uber-poster! Join Date: Apr 2008 Location: Shaboogling Posts: 7,199 Casino cash: $28478	Really useful info guys , I dont lift , and mines fine all the time , but been told (and ignored them) ! to lift always. Mate of mine does lift and is having issues with his so makes sense reading this ... just winding him up telling him he cant drive properly __________________ CSL Register Lifestyle Coach and Social Secretary

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Clutch not engaging while driving.	bryce	Technical Area	25	08-04-2009 01:47 PM
Brake pad wear sensors	Andyk	Technical Area	9	13-11-2008 06:31 AM
Clutch slur/slurry?	Jaw_F430	Main Message Centre	20	08-11-2008 02:35 PM
Flywheel / Clutch	The Gorilla	Main Message Centre	1	03-04-2008 01:33 PM

27-02-2009, 10:16 AM	#12
dave1 S5, Sport Off, DSC M-track Join Date: Sep 2008 Location: CORNWALL Posts: 937 Casino cash: $1432	i get slur if i change at 4k or 5k but not at full tilt which i find strange

27-02-2009, 10:40 AM	#14
SMD S6, Sport On, Traction Off Join Date: Jun 2008 Location: Shropshire Posts: 1,505 Casino cash: $10726	Yes sure is! I always lift a little on gear changes but when going out for a blast sport on S6 and foot to the floor and never lift and its fine!

28-02-2009, 09:29 AM	#16
glendog74 CSL Register Uber-poster! Tetris Champion! Join Date: Apr 2008 Location: Cornwall Posts: 8,861 Casino cash: $32299	^^^^^^^^ as AlexGTT says, even when not gunning it - don't lift.

28-02-2009, 10:21 AM	#17
rs32 S3 - On the open road Join Date: Aug 2008 Posts: 87 Casino cash: $250	there's a lot to learning this SMG gearbox. I'll try what you suggest Alex I usually use S3, but sometimes 4/5 is better. will try the technique of warming up in 1 then switching.

28-02-2009, 11:38 AM	#19
SpineOnABap S5, Sport Off, DSC M-track Join Date: May 2008 Location: Earth Posts: 561 Casino cash: $5714	I've never lifted on shifts. I'm not even sure it actually "adapts" to driving style in sequential mode, or if that's another forum myth..(?) The regular M3 SMG doesn't start slurring like the CSL one does, even if you drive like grandma.

28-02-2009, 11:46 AM	#20
bryce S5, Sport On, DSC M-track Join Date: Nov 2008 Location: Scotland (sw) Posts: 1,369 Casino cash: $2512	Just stop driving like girls and give the poor thing some death!