335XI Clutch Slip

Uzi_335xi · 07-02-2013, 01:12 PM

It finally happened. Went to overtake a car yesterday, went WOT, the clutch just slipped, and revved to 5000rpm, and then came the smell. A few hours later, tune on MAP 0, went WOT, still slipping. This morning, cold clutch, still slipping at WOT, slipping at even higher rpm's now.

Is there anyway this could be my CDV acting up??

If it is the clutch, does anyone have experience with the ACT street clutch? I want a near stock feeling clutch with a bit more bite.

Ferruccio · 07-02-2013, 01:25 PM

Given the description, it really sounds like you glazed the surface and made martensite out of your flywheel. Once my clutch slipped, it went downhill from there.

Spec stage 2+ feels almost exactly stock to me with more bite. Weight and engagement feel roughly the same too.

Rotorocious · 07-02-2013, 01:28 PM

I've had the ACT, trashed it within a year and the pedal feel was noticeably stiffer.

On the spec 2+ now and it's butter and stock like pedal feel.

135Hoser · 07-02-2013, 01:52 PM

I've had 2 ACT clutches on another platform, and I'm really quite unimpressed with them. Spec 2+ seems popular, go that route.

bmwm3redblack · 07-02-2013, 03:42 PM

It seems strange your clutch is slipping. usually it happens on a higher power levels. Btw what is your mileage?

Jeff@TopGearSolutions · 07-02-2013, 04:28 PM

Not strange that it's slipping. Once it slips it gets exponentially worse and even at stock power levels it won't hold.

Once you burn it up you have a limited amount of time before the car is undrivable in a worst case scenario.

I'd recommend the Spec over the ACT any day of the week.

135Hoser · 07-02-2013, 05:34 PM

Quote:

Originally Posted by bmwm3redblack

It seems strange your clutch is slipping. usually it happens on a higher power levels.

User error can be a major contributing factor to clutch failure, also he's got awd so if he's done any standing starts, he might have done damage to the clutch.

Presidio335xi · 07-02-2013, 06:17 PM

Quote:

Originally Posted by Uzi_335xi

I want a near stock feeling clutch with a bit more bite.

get the DMFW and not the lightened SMFW if you want stock feel and less chatter.

Ovitrix335 · 07-02-2013, 10:34 PM

OP get a spec clutch. I had the ACT HDSD on my car and was garbage. I have a spec stage 3+ with a steel flywheel now and it takes all the abuse i throw at it with no problems. Mine does have some chatter due to the steel flywheel. I went with the steel flywheel because i want to get a single turbo and i've read that oem flywheels cause misfires at higher power levels. If you don't want any chatter get a oem flywheel along with your spec clutch. The spec stage 3+ has a harder pedal feel compared with the spec stage 2+.

bmwm3redblack · 07-03-2013, 08:44 AM

Quote:

Originally Posted by 135Hoser

User error can be a major contributing factor to clutch failure, also he's got awd so if he's done any standing starts, he might have done damage to the clutch.

+11111111

Uzi_335xi · 07-05-2013, 08:55 AM

The car currently has 105,000 KM on it. I bought it used @ 97,000km, I am assuming its a combination of the older owner + a few clutch dumps at the drag way.

Car is back at the dealer I bought it from now, they may end up covering the clutch after all. If not it sounds like i am going with a spec clutch.

Lesson learned, do not by 335's @ 100K area, a lot of work has been required.

07-02-2013, 01:12 PM	#1
Uzi_335xi Enlisted Member 2 Rep 37 Posts Drives: 2014 Ford Mustang GT Join Date: Jun 2013 Location: Cambridge, ON iTrader: (0)	335XI Clutch Slip It finally happened. Went to overtake a car yesterday, went WOT, the clutch just slipped, and revved to 5000rpm, and then came the smell. A few hours later, tune on MAP 0, went WOT, still slipping. This morning, cold clutch, still slipping at WOT, slipping at even higher rpm's now. Is there anyway this could be my CDV acting up?? If it is the clutch, does anyone have experience with the ACT street clutch? I want a near stock feeling clutch with a bit more bite. __________________ 08 335XI- Mods~ JB4 G5, Injen Intakes, VRSF 7" FMIC, Southbend stage 2 clutch (first XI clutch made by southbend), Eibach pro-kit "It's now okay to own a BMW, it appears all of the Douchebags have moved over to Audi's"
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07-02-2013, 01:25 PM	#2
Ferruccio First Lieutenant 43 Rep 373 Posts Drives: 2010 335i Join Date: May 2011 Location: Colorado Springs, CO iTrader: (1)	Given the description, it really sounds like you glazed the surface and made martensite out of your flywheel. Once my clutch slipped, it went downhill from there. Spec stage 2+ feels almost exactly stock to me with more bite. Weight and engagement feel roughly the same too.
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07-02-2013, 01:28 PM	#3
Rotorocious Lieutenant Colonel 104 Rep 1,520 Posts Drives: 335xi Join Date: May 2010 Location: Colorado iTrader: (3)	I've had the ACT, trashed it within a year and the pedal feel was noticeably stiffer. On the spec 2+ now and it's butter and stock like pedal feel.
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07-02-2013, 01:52 PM	#4
135Hoser Banned 39 Rep 315 Posts Drives: '16 m4 zcp Join Date: Jul 2011 Location: Canada, Eh iTrader: (0)	I've had 2 ACT clutches on another platform, and I'm really quite unimpressed with them. Spec 2+ seems popular, go that route.
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07-02-2013, 03:42 PM	#5
bmwm3redblack Captain 61 Rep 886 Posts Drives: BMW ///M3 E46, BMW E92 335Xi Join Date: Jan 2011 Location: e13 osl iTrader: (0)	It seems strange your clutch is slipping. usually it happens on a higher power levels. Btw what is your mileage? __________________ Bmw 335xi/FBO/ black on black/ 6sp manual/Cobb AP/BMS DCI/AA BOV KIT/VRSF DP'S/VRSF 7'FMIC /FULLY CATLESS/H&R sport springs/ 19' ac schnitzer wheels.
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07-02-2013, 04:28 PM	#6
Jeff@TopGearSolutions 3455 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Not strange that it's slipping. Once it slips it gets exponentially worse and even at stock power levels it won't hold. Once you burn it up you have a limited amount of time before the car is undrivable in a worst case scenario. I'd recommend the Spec over the ACT any day of the week.
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07-02-2013, 10:34 PM	#9
Ovitrix335 Second Lieutenant 7 Rep 229 Posts Drives: Bmw 335i Join Date: Aug 2011 Location: Michigan iTrader: (11)	OP get a spec clutch. I had the ACT HDSD on my car and was garbage. I have a spec stage 3+ with a steel flywheel now and it takes all the abuse i throw at it with no problems. Mine does have some chatter due to the steel flywheel. I went with the steel flywheel because i want to get a single turbo and i've read that oem flywheels cause misfires at higher power levels. If you don't want any chatter get a oem flywheel along with your spec clutch. The spec stage 3+ has a harder pedal feel compared with the spec stage 2+.
	Appreciate 0 Quote

07-05-2013, 08:55 AM	#11
Uzi_335xi Enlisted Member 2 Rep 37 Posts Drives: 2014 Ford Mustang GT Join Date: Jun 2013 Location: Cambridge, ON iTrader: (0)	The car currently has 105,000 KM on it. I bought it used @ 97,000km, I am assuming its a combination of the older owner + a few clutch dumps at the drag way. Car is back at the dealer I bought it from now, they may end up covering the clutch after all. If not it sounds like i am going with a spec clutch. Lesson learned, do not by 335's @ 100K area, a lot of work has been required. __________________ 08 335XI- Mods~ JB4 G5, Injen Intakes, VRSF 7" FMIC, Southbend stage 2 clutch (first XI clutch made by southbend), Eibach pro-kit "It's now okay to own a BMW, it appears all of the Douchebags have moved over to Audi's"
	Appreciate 0 Quote