SMG Gearboxes - Page 6

**Great Pretender** · 29-06-2010, 12:07 PM

Folks,

I've been reading this thread with interest. One thought has occurred to me though:

With all the problems some of you have had in respect to the SMG II, why not convert the car to a manual transmission and solve the problem permanently?

**shimmy** · 29-06-2010, 12:12 PM

Quote:

Originally Posted by Great Pretender

Folks,

I've been reading this thread with interest. One thought has occurred to me though:

With all the problems some of you have had in respect to the SMG II, why not convert the car to a manual transmission and solve the problem permanently?

No point if warranty covers it but you may find a few do this as warranties expire

trouble is the cost for the change over in new clutch and extra possible loss if value as CSL will be harder to sell outweighs the cost of a clutch alone for tge SMG

most will only have this problem once within their ownership

DuncanR · 29-06-2010, 06:35 PM

Quote:

Originally Posted by Great Pretender

With all the problems some of you have had in respect to the SMG II, why not convert the car to a manual transmission and solve the problem permanently?

Cos it would fook peeps like T$ and Lawsy up a bit !

Bounce · 29-06-2010, 10:20 PM

Quote:

Originally Posted by DuncanR

Cos it would fook peeps like T$ and Lawsy up a bit !

flow · 17-08-2010, 02:29 PM

I also have the same problem with the 4th gear , some times it will not shift into 4th and makes a grinding noise .

I had my local shop (BMW specialist) change the clutch en those little cheap springs , but the springs were fine . So the springs can't be the problem with my SMG .

After talking to the mecanic and explaing the problem he said that when installing the clutch he had a problem removing this part nr9

He said that normally with a special tool it is easy to remove , but in my box it was pretty much stuck and according to him that is a part that should be able to move .
Before re installing the part he cleand it and put some grease on it so it can move better .
I did a little test drive and now the SMG shifts are alot smoother .
what are your toughts on that ? could that be the problem or A problem ?
This weekend i'm doing a ring day and monday a ring trackday so i can really test if the SMG is OK now .

mil · 17-08-2010, 08:13 PM

Hi Flow,

Thanks for the input. Anything is possible in this case I think. Please let us know if that will help with your car.

Since my previous post my car has got:
- gear identification switch (strange call as this should be included in the complete gearbox swap earlier)
- rear differential
- output shafts (left and right)
- rear wheel bearings and hubs (a separate problem there, but changed anyway)
- clutch bleeding several times
- all possible reset/adaptations several times

No solution. Next on the line is clutch output cylinder and then.. you guessed it: the smg hydraulic unit.

flow · 17-08-2010, 09:36 PM

Quote:

Originally Posted by mil

Hi Flow,

Thanks for the input. Anything is possible in this case I think. Please let us know if that will help with your car.

Since my previous post my car has got:
- gear identification switch (strange call as this should be included in the complete gearbox swap earlier)
- rear differential
- output shafts (left and right)
- rear wheel bearings and hubs (a separate problem there, but changed anyway)
- clutch bleeding several times
- all possible reset/adaptations several times

No solution. Next on the line is clutch output cylinder and then.. you guessed it: the smg hydraulic unit.

I will let you know next week .

flow · 21-08-2010, 04:43 PM

Car shifts very good and smooth , alot better then before but after a good testdrive the 4th gear problem happend again .

Is it a problem with the syncro's in the gearbox ? because its only one gear ??

mil · 21-08-2010, 10:45 PM

Flow,

Sorry to hear that the problem still exists. I don't think it's synchros, however it could be, as there are few people who say that new gearbox has helped. New gearbox because you cannot get individual inner gearbox parts from BMW. It's also possible that the same 4th gear grinding symptom is caused by two (or even more) different problems.

In my case new gearbox did not help anything. Only after some hundreds of kilometers it failed again. I suspect it is something outside gearbox and clutch, but so far nobody can confirm this.

**shimmy** · 21-08-2010, 11:03 PM

O ad 3-4 grinding and missing gear issue in 2008 at 45k miles.

New gearbox solved it. The gearbox oil showed faint signs of the synchro metal BUT my gut feeling was that this was due to the grinding and bit the cause of it.

Good luck.

17-08-2010, 02:29 PM	#55
flow S4 - Getting the hang of it Join Date: Feb 2009 Location: Belgium Posts: 176 Casino cash: $9921	I also have the same problem with the 4th gear , some times it will not shift into 4th and makes a grinding noise . I had my local shop (BMW specialist) change the clutch en those little cheap springs , but the springs were fine . So the springs can't be the problem with my SMG . After talking to the mecanic and explaing the problem he said that when installing the clutch he had a problem removing this part nr9 He said that normally with a special tool it is easy to remove , but in my box it was pretty much stuck and according to him that is a part that should be able to move . Before re installing the part he cleand it and put some grease on it so it can move better . I did a little test drive and now the SMG shifts are alot smoother . what are your toughts on that ? could that be the problem or A problem ? This weekend i'm doing a ring day and monday a ring trackday so i can really test if the SMG is OK now . __________________ '04 996 GT3 MK2 CS '03 CSL '12 Megane RS265

21-08-2010, 04:43 PM	#58
flow S4 - Getting the hang of it Join Date: Feb 2009 Location: Belgium Posts: 176 Casino cash: $9921	Car shifts very good and smooth , alot better then before but after a good testdrive the 4th gear problem happend again . Is it a problem with the syncro's in the gearbox ? because its only one gear ?? __________________ '04 996 GT3 MK2 CS '03 CSL '12 Megane RS265

21-08-2010, 11:03 PM	#60
shimmy CSL Register Uber-poster! Join Date: Apr 2008 Location: Uk Posts: 14,646 Casino cash: $43909	O ad 3-4 grinding and missing gear issue in 2008 at 45k miles. New gearbox solved it. The gearbox oil showed faint signs of the synchro metal BUT my gut feeling was that this was due to the grinding and bit the cause of it. Good luck. __________________ .

29-06-2010, 12:07 PM	#51
Great Pretender S3 - On the open road Join Date: Jun 2010 Location: Aberdeen Posts: 109 Casino cash: $772	Folks, I've been reading this thread with interest. One thought has occurred to me though: With all the problems some of you have had in respect to the SMG II, why not convert the car to a manual transmission and solve the problem permanently?

17-08-2010, 08:13 PM	#56
mil Wonky 'L' after Washing Join Date: Mar 2010 Posts: 10 Casino cash: $480	Hi Flow, Thanks for the input. Anything is possible in this case I think. Please let us know if that will help with your car. Since my previous post my car has got: - gear identification switch (strange call as this should be included in the complete gearbox swap earlier) - rear differential - output shafts (left and right) - rear wheel bearings and hubs (a separate problem there, but changed anyway) - clutch bleeding several times - all possible reset/adaptations several times No solution. Next on the line is clutch output cylinder and then.. you guessed it: the smg hydraulic unit.

21-08-2010, 10:45 PM	#59
mil Wonky 'L' after Washing Join Date: Mar 2010 Posts: 10 Casino cash: $480	Flow, Sorry to hear that the problem still exists. I don't think it's synchros, however it could be, as there are few people who say that new gearbox has helped. New gearbox because you cannot get individual inner gearbox parts from BMW. It's also possible that the same 4th gear grinding symptom is caused by two (or even more) different problems. In my case new gearbox did not help anything. Only after some hundreds of kilometers it failed again. I suspect it is something outside gearbox and clutch, but so far nobody can confirm this.