SMG 'clunk'

sjb · 15-01-2013, 06:23 PM

Hi. I forgot to add to my other post that when I test drove the CSL there was a slight clunk from the diff(?) on the upshift. Now I have a manual M3 so don't know the in's and out's of the smg. Silly question coming..... Do you have to lift off when shifting up or keep it planted? The seller said to lift a little for a sit second and this made it smooth. The shift was set to half way between soft and ferocious! Just checking there's not an issue with the diff....
Cheers.

Bounce · 15-01-2013, 06:41 PM

Quote:

Originally Posted by sjb

Hi. I forgot to add to my other post that when I test drove the CSL there was a slight clunk from the diff(?) on the upshift. Now I have a manual M3 so don't know the in's and out's of the smg. Silly question coming..... Do you have to lift off when shifting up or keep it planted? The seller said to lift a little for a sit second and this made it smooth. The shift was set to half way between soft and ferocious! Just checking there's not an issue with the diff....
Cheers.

Bit of a clunk is fine,don't start lifting,it as it can cause the clutch to start slurring.

0836whimper · 15-01-2013, 06:54 PM

Basically when driven hard with no lift off, it feels like the diff is going to wrench itself out if the car. So sounds normal.

It's not smooth, but it's all part of the drama

sjb · 15-01-2013, 07:57 PM

Thanks for the replies

Jon8710 · 16-01-2013, 01:47 PM

dont lift my friend or the clutch will slur and the gear change will stink,

keep your foot in it and allways drive it in manual with the gear change in one of the top 2 setting.

martin770 · 16-01-2013, 07:24 PM

Drive it like ya stole it !!

sjb · 16-01-2013, 09:45 PM

Will take note of the replies when I have a second viewing in the next few days

digi · 20-01-2013, 09:57 AM

you may even get some hunting. That is normal too.

Also, it can buck around cold if you pussy foot it. My mrs always complains when she cold starts it.

As mentioned, drive it with vigor and it will reward. Another thing I noticed is that if you change the exhaust (gruppe m or something more free flowing), car is smoother. Maybe becoz during low revs I give it more beans becoz it sounds so much more wicked.

ZKMI · 14-12-2013, 07:00 PM

Sorry to bring up an old thread guys.

I know some lift of the throttle when changing gears but the bmw manual says that you dont need to.

Just was wondering what your thoughts are on this and problems that are caused with the clutch when you do lift of the throttle..

Thank you.

**glendog74** · 14-12-2013, 08:21 PM

Quote:

Originally Posted by Interlagos CS

Sorry to bring up an old thread guys.

I know some lift of the throttle when changing gears but the bmw manual says that you dont need to.

Just was wondering what your thoughts are on this and problems that are caused with the clutch when you do lift of the throttle..

Thank you.

Never lift.

I've not had any issues with mine in 50k miles and lots of track days

15-01-2013, 06:23 PM	#1
sjb S5 - Full Throttle Join Date: Jan 2013 Location: Brighton. Posts: 372 Casino cash: $6192	SMG 'clunk' Hi. I forgot to add to my other post that when I test drove the CSL there was a slight clunk from the diff(?) on the upshift. Now I have a manual M3 so don't know the in's and out's of the smg. Silly question coming..... Do you have to lift off when shifting up or keep it planted? The seller said to lift a little for a sit second and this made it smooth. The shift was set to half way between soft and ferocious! Just checking there's not an issue with the diff.... Cheers.

16-01-2013, 01:47 PM	#5
Jon8710 S5, Sport Off, DSC M-track Join Date: May 2012 Location: london Posts: 563 Casino cash: $8371	dont lift my friend or the clutch will slur and the gear change will stink, keep your foot in it and allways drive it in manual with the gear change in one of the top 2 setting. __________________ 1979 E24 635csi , 730d work horse , Porsche GT4

16-01-2013, 07:24 PM	#6
martin770 S4 - Getting the hang of it Join Date: Oct 2012 Location: southampton Posts: 206 Casino cash: $4767	Drive it like ya stole it !! __________________ Was CSL Build number 214 Now E46 M3 Track car

20-01-2013, 09:57 AM	#8
digi S5 - Full Throttle Join Date: Apr 2009 Location: Hong Kong Posts: 486 Casino cash: $4438	you may even get some hunting. That is normal too. Also, it can buck around cold if you pussy foot it. My mrs always complains when she cold starts it. As mentioned, drive it with vigor and it will reward. Another thing I noticed is that if you change the exhaust (gruppe m or something more free flowing), car is smoother. Maybe becoz during low revs I give it more beans becoz it sounds so much more wicked. __________________ E46 M3 CSL + R35 GTR (bolt on mods 600bhp) + 458 Italia + LP560-4 + Audi S5

15-01-2013, 06:54 PM	#3
0836whimper S5, Sport Off, DSC M-track Join Date: Apr 2012 Location: Nottingham Posts: 516 Casino cash: $7379	Basically when driven hard with no lift off, it feels like the diff is going to wrench itself out if the car. So sounds normal. It's not smooth, but it's all part of the drama

15-01-2013, 07:57 PM	#4
sjb S5 - Full Throttle Join Date: Jan 2013 Location: Brighton. Posts: 372 Casino cash: $6192	Thanks for the replies

16-01-2013, 09:45 PM	#7
sjb S5 - Full Throttle Join Date: Jan 2013 Location: Brighton. Posts: 372 Casino cash: $6192	Will take note of the replies when I have a second viewing in the next few days

14-12-2013, 07:00 PM	#9
ZKMI S4 - Getting the hang of it Join Date: Nov 2013 Posts: 164 Casino cash: $3625	Sorry to bring up an old thread guys. I know some lift of the throttle when changing gears but the bmw manual says that you dont need to. Just was wondering what your thoughts are on this and problems that are caused with the clutch when you do lift of the throttle.. Thank you.