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Forced Induction Forum Sponsored by Active Autowerke
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Old 08-24-2005, 08:02 AM   #1
raine24
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Q: SMG with supercharger ??

Honestly did a search and did not find anything useful exept some of smg owners have had qlutch problems.

How does the smg tranny handel SK1 kit comparing to manual and auto?? do I need and can I upgrade a stronger qlutch??

Thanks
Rainer
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Old 08-29-2005, 12:03 AM   #2
Mike Benvo
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Quote:
Originally Posted by raine24
Honestly did a search and did not find anything useful exept some of smg owners have had qlutch problems.

How does the smg tranny handel SK1 kit comparing to manual and auto?? do I need and can I upgrade a stronger qlutch??

Thanks
Rainer
You would probably just have to upgrade the clutch.
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Old 08-30-2005, 07:28 AM   #3
RUSSancho
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Well I guess I am the one with SMG who had all the clutch problems...

I'll give you my feedback on what I had to do to make it work.

At first, when I was chosing between SKI and SKII I was hesitating on how much power the SMG tranny can hold, so in the end I went with SKI to be sure.
After the install I could really feel the difference in car's performance, but i noticed a serious problem in gear changes. The clutch was slipping bad. So bad that it took all the fun from driving a S/Ced car.
I was speculating on what the problem could be and it took me awhile to undestand what had to be done.
I've also searched this forum for someone who installed S/C on 330 with SMG but didnt find answers. At first I thought that the control unit of my SMG was programmed for stock engine torqe. Thats why it didn't realesed the clutch and allowed for clutch slip. I asked many dealers and tuning companies in Moscow if they can reprogramm the SMG unit. they all said "NO"
I was desperate and was ready to remove the supercharger...
Later after another extensive search I learned that all 330Ci original clutch has a new "SAC" (Self Adjusting Clutch) design. That was probably the cause of my problems (you can learn more about it at http://www.uucmotorwerks.com)
I've decided that uprgrading the clutch was my best bet. Unfortunatly for me (I live in Russia) we dont have any tuning companies who offer clutch upgrades for e46 so I had to oder it from uucmotorwerks. (I went with Lightweight flywheel and clutch combo with organic clutch)
After the install the problem was gone!!! but another problem emerged...
the car was very jerky everytime i started rolling...it felt like the clutch was released to soon, so I had to throttle up to compensate. As a result the car was jumpy and traffic was a nightmare. Again I was dissapointed
This forum helped me in solving this problem . I went to a dealer and asked them to update the SMG control unit software and also to reset the control unit so it goes into learning mode (actually they do this everytime you change the clutch). After that I felt like the car was trying to adapt to a new clutch. It took 2 days for it to adapt...Now I can definitely say that the car is amazing. It has the performance of a S/Ced car and is a daily driver.

bottomline: heres what you need to do
upgrade the clutch --> update SMG cotrol unit --> let the car adapt to a new clutch

hope it helps. Good luck!
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Old 08-30-2005, 07:39 AM   #4
raine24
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woa thanks a lot for the write up

you said that you changed the flywheels also.. why? is this reccomended or just the clutch? did you order UUC-330-6S-OEPO 658USD??

thanks again
R.
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Old 08-30-2005, 08:37 AM   #5
RUSSancho
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Once I started to upgrade the clutch I thought "why not put a lighter flywheel while I am a it" so I dont know if its a must or not, but I can say the car revs up quicker and the gear changes are faster.

I ordered this:
Lightweight Flywheel & clutch - '03+ E46 330 6-speed/SMG, Z4 3.0, '04+ 530i
at http://www.uucmotorwerks.com/
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Old 08-30-2005, 11:07 AM   #6
sublimey
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Hi Russ,

The stock clutch should be able to handle up to 300HP or more that the SK1 puts out. Is it really neccessary to go through the steps you suggested? Could you just update the control unit and let the car adapt? So I need another control unit?

Thanks
Jason
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Old 08-31-2005, 07:16 AM   #7
RUSSancho
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You can try just updating the control unit software. Dont know if it'll work... I changed the clutch to eliminate SAC system in the stock clutch which I think is the main reason why the clutch was slipping
you dont need another control unit...you just need to reset it so it goes into learning mode.
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Old 12-15-2005, 09:40 AM   #8
sublimey
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Hi Russ, so technically the problem has not been solved? Ugh... I want to S/C my car!!!
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Old 12-15-2005, 09:41 AM   #9
jersey
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no i dont think its been solved....he said even after he got his car back from the shop it was slipping....at first it wasnt, but then as the software learned, it started to slip again....
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Old 12-15-2005, 12:10 PM   #10
sublimey
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I think the problem lies either with the clutch unable to deal with the larger power or the SMG hydraulics just are unreliable...
Jersey will you be S/Cing your car?
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Old 12-19-2005, 02:30 PM   #11
jersey
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i was seriously considering it...but now im having second thoughts to be honest
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