CM fx100 slipping in high gears

335iLI · 05-19-2011, 10:20 AM

So after an initial long break in period with this clutch it was holding up great for the last 3000 miles. Then driving home a couple days ago I hit the gas in 5th gear and noticed a slight jump then drop in rpm. I was able to repeat this both in 5th and 6th gears and then it stopped and held fine. I get in the car yesterday and after startup I decide to try again(waited till temps reached 200 so car would boost) and I go full wot in 6th and it slips even worse then the day before, but after driving and going through the gears it stops happening and holds fine. I called clutchmasters they said they have heard of this on cars that have a proportioning valve between slave and master cylinder. Does anyone have any ideas what could be the problem. Why am I getting these small slips in high gears and only when I initially drive. Thanks

335iLI · 05-19-2011, 06:23 PM

bump to why clutch is slipping when you first start driving

dzenno · 05-19-2011, 06:32 PM

Quote:

Originally Posted by 335iLI

bump to why clutch is slipping when you first start driving

Other than mine going out after 4500km I already heard of three others with short life span from clutchmasters...mine was a 6 puck ceramic and I thought that may have been the reason but now I'm starting to wonder wtf is up with CM on these cars...try talking to Luis at CM and put in a warranty claim as that's definitely not normal...

I wonder if anyone here has run a CM clutch for a longer period than 15,000km, anyone?

335iLI · 05-19-2011, 06:40 PM

Quote:

Originally Posted by dzenno

Other than mine going out after 4500km I already heard of three others with short life span from clutchmasters...mine was a 6 puck ceramic and I thought that may have been the reason but now I'm starting to wonder wtf is up with CM on these cars...try talking to Luis at CM and put in a warranty claim as that's definitely not normal...

I wonder if anyone here has run a CM clutch for a longer period than 15,000km, anyone?

i talked to them today they said they would send me an fx300 but of course I have to pay and hope mine gets covered when i send it back. Does anyone know if i can pair their fly wheel with an act clutch?

I spoke to awd motor sports the vendor I purchased it from and they said they have never heard of a problem with a cm clutch. They said they would call cm and see what they could do. They havent called me back its been 5 days. Just bc they havent heard of a problem doesnt mean they dont exist its supper frustrating have to pay for install again, and not having your vendor at least least try and help me get new parts.

dzenno · 05-19-2011, 06:46 PM

Well depending on your power level fx100 should've held man, rated at 450hp afaik...how much power are you putting down?

335iLI · 05-19-2011, 06:50 PM

Quote:

Originally Posted by dzenno

Well depending on your power level fx100 should've held man, rated at 450hp afaik...how much power are you putting down?

FBO minus meth. Its just so weird that it holds after you drive and the clutch warms up.

Former_Boosted_IS · 05-19-2011, 07:21 PM

Hmmm, that does sound wierd. I have had no issues whatsoever with my CM. Are you on the stock flywheel? Did you have it resurfaced?

335iLI · 05-19-2011, 07:25 PM

Quote:

Originally Posted by Former_Boosted_IS

Hmmm, that does sound wierd. I have had no issues whatsoever with my CM. Are you on the stock flywheel? Did you have it resurfaced?

i have cm light weight fly

Former_Boosted_IS · 05-19-2011, 07:28 PM

Quote:

Originally Posted by 335iLI

i have cm light weight fly

Ya, that really makes absolutely no sense then. It sure sounds like a slip from what you are describing. What is the FX100 rated at?

335iLI · 05-19-2011, 07:36 PM

Quote:

Originally Posted by Former_Boosted_IS

Ya, that really makes absolutely no sense then. It sure sounds like a slip from what you are describing. What is the FX100 rated at?

70percent over stock. It slips between 3-4k its almost like wheel spin.
I talked to cm they said the fx100 doesnt hold that much. Maybe they should change that 70% to 10%

Former_Boosted_IS · 05-19-2011, 07:40 PM

Quote:

Originally Posted by 335iLI

70percent over stock. It slips between 3-4k its almost like wheel spin.
I talked to cm they said the fx100 doesnt hold that much. Maybe they should change that 70% to 10%

The thing is we don't know what stock is rated for though. What tq levels does CM say?

335iLI · 05-19-2011, 07:45 PM

Quote:

Originally Posted by Former_Boosted_IS

The thing is we don't know what stock is rated for though. What tq levels does CM say?

I think 450

Former_Boosted_IS · 05-19-2011, 08:02 PM

Quote:

Originally Posted by 335iLI

I think 450

If that rating is real, then you probably have very close to that number.

335iLI · 05-19-2011, 08:18 PM

Quote:

Originally Posted by Former_Boosted_IS

If that rating is real, then you probably have very close to that number.

Just makes no sense that after it slips a couple times it holds great

Former_Boosted_IS · 05-19-2011, 08:37 PM

Quote:

Originally Posted by 335iLI

Just makes no sense that after it slips a couple times it holds great

That part does seem odd to me as well. Are you just flooring it in high gears with no shift to make this happen?

Tuner1984 · 05-19-2011, 08:44 PM

CM is good. I def would go with ACT though. Never had a problem with those clutches before.

Toker335i · 05-19-2011, 08:47 PM

i was so close to getting the CM clutch/flywheel, im glad i didnt, i did get my flywheel resurfaced by them though in under 30 minutes!

I have a ACT clutch and its great no problems.

335iLI · 05-19-2011, 10:15 PM

Quote:

Originally Posted by Former_Boosted_IS

Quote:

Originally Posted by 335iLI

Just makes no sense that after it slips a couple times it holds great

That part does seem odd to me as well. Are you just flooring it in high gears with no shift to make this happen?

Just flooring it no shift.

dzenno · 05-19-2011, 11:02 PM

Yeah sounds like it's done..that sucks for CM...ACT has put up with power and milage on our cars very well so far including upgraded turbos

335iLI · 05-19-2011, 11:05 PM

Quote:

Originally Posted by dzenno

Yeah sounds like it's done..that sucks for CM...ACT has put up with power and milage on our cars very well so far including upgraded turbos

I might just run an act on my stock fly. Does anyone know if i can run a act on a CM fly.

335iLI · 05-19-2011, 11:07 PM

I'm scared of CM now I'd hate to take it out and throw in a fx300 and hate it. Act is proven and well liked.

jippii ensio · 05-20-2011, 12:00 AM

Ask what torque it is rated for. I guess it is rated close to what you have with FBO. So no wonder it slips.

05-19-2011, 10:20 AM	#1
335iLI Captain 34 Rep 634 Posts Drives: 335i Join Date: Nov 2009 Location: NY-LI iTrader: (5)	CM fx100 slipping in high gears So after an initial long break in period with this clutch it was holding up great for the last 3000 miles. Then driving home a couple days ago I hit the gas in 5th gear and noticed a slight jump then drop in rpm. I was able to repeat this both in 5th and 6th gears and then it stopped and held fine. I get in the car yesterday and after startup I decide to try again(waited till temps reached 200 so car would boost) and I go full wot in 6th and it slips even worse then the day before, but after driving and going through the gears it stops happening and holds fine. I called clutchmasters they said they have heard of this on cars that have a proportioning valve between slave and master cylinder. Does anyone have any ideas what could be the problem. Why am I getting these small slips in high gears and only when I initially drive. Thanks
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05-19-2011, 06:23 PM	#2
335iLI Captain 34 Rep 634 Posts Drives: 335i Join Date: Nov 2009 Location: NY-LI iTrader: (5)	bump to why clutch is slipping when you first start driving
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05-19-2011, 06:46 PM	#5
dzenno Banned 273 Rep 5,876 Posts Drives: Join Date: Feb 2006 iTrader: (1)	Well depending on your power level fx100 should've held man, rated at 450hp afaik...how much power are you putting down?
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05-19-2011, 07:21 PM	#7
Former_Boosted_IS Major General 307 Rep 5,175 Posts Drives: 4 Wheels Join Date: Aug 2007 Location: Planet Earth! iTrader: (15)	Hmmm, that does sound wierd. I have had no issues whatsoever with my CM. Are you on the stock flywheel? Did you have it resurfaced?
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05-19-2011, 08:44 PM	#16
Tuner1984 1 Stock M 76 Rep 1,650 Posts Drives: Something Slow Join Date: Jan 2010 Location: Northern Virginia iTrader: (5) Garage List 2003 E46 M3 [0.00]	CM is good. I def would go with ACT though. Never had a problem with those clutches before. __________________ Veteran USMC/Iraqi Freedom Current: E46 M3 Retired: 2009 E90 AW M3 Retired: 2007 E90 AW 335i.
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05-19-2011, 08:47 PM	#17
Toker335i Captain 65 Rep 854 Posts Drives: 335i/Sold--10" GTR Join Date: Oct 2010 Location: Socal iTrader: (2)	i was so close to getting the CM clutch/flywheel, im glad i didnt, i did get my flywheel resurfaced by them though in under 30 minutes! I have a ACT clutch and its great no problems. __________________ 10' Solid Red GTR 08' 335i 6MT - Sold 92' NA 300ZX 5speed - Sold 06 IS350 - Sold
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05-19-2011, 11:02 PM	#19
dzenno Banned 273 Rep 5,876 Posts Drives: Join Date: Feb 2006 iTrader: (1)	Yeah sounds like it's done..that sucks for CM...ACT has put up with power and milage on our cars very well so far including upgraded turbos
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05-19-2011, 11:07 PM	#21
335iLI Captain 34 Rep 634 Posts Drives: 335i Join Date: Nov 2009 Location: NY-LI iTrader: (5)	I'm scared of CM now I'd hate to take it out and throw in a fx300 and hate it. Act is proven and well liked.
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05-20-2011, 12:00 AM	#22
jippii ensio Major 68 Rep 1,432 Posts Drives: 335i Join Date: Feb 2009 Location: On the road iTrader: (0)	Ask what torque it is rated for. I guess it is rated close to what you have with FBO. So no wonder it slips.
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