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06-21-2002, 12:01 PM
I need some help with the clutch on my 2001 325i. I got no mechanical help from e46 forum, so I am trying the go to guys of forced induction, which is in the plans for my 325i soon.
I installed a cold air intake and exhaust on my car. I am experiencing clutch slippage now and would like to eliminate it. I drive my car about as aggressive as I can get away with on public streets and really enjoy it at the local autocrosses.
Have I just beat up the clutch too much? 19k miles on odometer and aside from intake and exhaust, all else is stock. Does anyone know where I can get a stronger clutch package or what I need to do? Any help would be greatly appreciated. Thanks in advance....


06-21-2002, 01:41 PM
I would ask the parts guy at the dealership to cross check the part #s for your pressure assy and that of an M3. It is possible your car uses an assy with less clamping force. The pressure plate should be interchangable assuming the M3 unit has a higher rating.


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KC Ron Carter
06-21-2002, 06:48 PM
Simeon must still like his stealer!

But if I was into serious street driving I would check with your friend and mine, Jim Rowe at Metric Mechanic.

He can hook you up with a lower differential.
He has lightened flywheels and maximum clutches.

See the link and call him.

Just for reference I am still on my first clutch on an e30 that is over 17 years old. You may have developed some questionable actions.

Ron Carter

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06-22-2002, 01:45 AM
The Bimmer clutches have some margin. cold air intakes and sport exhausts don't increase torque enough to slip the clutch. The other advice is good when you go force feed the car, but in this allmost stock setup a stock clutch should cope.

06-24-2002, 10:44 AM

07-05-2002, 10:57 AM
I have a 97 m3 with nitrous. My stock clutch went while it was still being dyno tested. I have replaced my clutch with one made by active autowerke. It is awesome, this baby grabs like you wouldn't believe, even with my nitrous. I know how frustrating a slipping clutch is. If you drive aggresively, especially launch your car a lot you could easily wear out a stock clutch. AA makes a good clutch(is is actually made my SACHS of germany)although if you don'thave forced induction you may be able to find a less expensive clutch kit that will still provise the clamping force necessary.

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