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16-04-2011, 12:16 AM
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#1 |
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S2 - Picking it up
Join Date: Sep 2007
Location: Scotland
Posts: 56
Casino cash: $418  |
clutch noise ( the clunk )
Hi all,
my csl has always made this noise as the clutch engages and disengages at low road speeds after getting driven hard, usually whilst getting back up the driveway it clunks and rattles like a bag of bolts. i've always just ignored it but now it's getting worse I'm feeling the need to attend to it before it breaks. Does anyone know what causes the noise and would a new clutch stop it or is it another part of the system? the car is on 45k, has no regular slur and changes gear as sweet as a nut, but does get, and has had a hard life. thanks for any ideas. |
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16-04-2011, 02:13 PM
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#2 |
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S4 - Getting the hang of it
 
Join Date: Oct 2009
Location: devon
Posts: 181
Casino cash: $632  |
Duel mass flywheel ?
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16-04-2011, 09:30 PM
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#3 |
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CSL Register Uber-poster!
Join Date: Sep 2009
Location: Olney, Bucks
Posts: 3,735
Casino cash: $9984 |
Fluid level ?
__________________
" I use Gleaming Kleen.... for that new car look "  I wish I had used - Race Data Systems - Motorsport Data Loggers forgive me Nathan ! 
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16-04-2011, 11:37 PM
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#4 |
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S2 - Picking it up
Join Date: Sep 2007
Location: Scotland
Posts: 56
Casino cash: $418 |
fluids are all there, it has been doing it for as long as I can remember, and has been serviced a few times to say the least. It seems to be temperature related but after an early morning thrash today, didn't make any noises, sod's law. when it does it, it sounds like someone loading a gun as I reverse over the kerb into the driveway. it seems to happen when the clutch disengages after lifting off at crawling speed.
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17-04-2011, 08:02 PM
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#5 |
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CSL Register Uber-poster!
Join Date: Jun 2008
Posts: 4,247
Casino cash: $15600 |
you sure its not the diff?
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17-04-2011, 09:40 PM
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#6 | |
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S2 - Picking it up
Join Date: Sep 2007
Location: Scotland
Posts: 56
Casino cash: $418 |
Quote:
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19-04-2011, 06:52 AM
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#7 |
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S4 - Getting the hang of it
Join Date: Jan 2011
Location: Stockholm, Sweden
Posts: 138
Casino cash: $1477 |
Or drive shaft joints (sorry, don't know the appropriate English name for them). When new they are are tight but when worn they get some play. I changed these (I had to change the whole drive shafts on each side since BMW don't sell the joints separately). This took away most of the gearshift clonking sound on my car
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20-04-2011, 10:36 AM
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#8 | |
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CSL Register Uber-poster!
Join Date: Sep 2009
Location: Olney, Bucks
Posts: 3,735
Casino cash: $9984 |
Quote:
__________________
" I use Gleaming Kleen.... for that new car look " I wish I had used - Race Data Systems - Motorsport Data Loggers forgive me Nathan !
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20-04-2011, 11:23 AM
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#9 | |
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CSL Register Uber-poster!
Join Date: Sep 2009
Location: Cambridge
Posts: 6,460
Casino cash: $27763 |
Quote:
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 UK CSL No.020 ... after 7 years of ownership  I've now SOLD it !!! 
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20-04-2011, 11:32 AM
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#10 | |
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Driving it like I nicked it
Join Date: Dec 2007
Location: Northern Ireland
Posts: 2,623
Casino cash: $14519 |
Mine had a new diff just a couple of thousand miles ago and still clunks. It was changed due to a collapsed bearing, nothing to do with the noise. I'd noticed some oil on the garage floor one morning.
But, it does sound more like your diff' mate. What about that revised Oil that BMW put in the diffs? Maybe check see if it's had that.
__________________
 My Car 2004 M3 CSL with Supersprint Lightweight Race and AP's front and rear Quote:
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