[chiefsotos]

Hello, i have a 2008 bmw 335 E93 with procede rev2 at 15-17psi, intercooler and no cats and i am looking for new clutch.
The oem clutch fried at 30.000kms with 13psi and after that i put the organic act. The act gave up after 35000kms with 16-17psi.
Now i would like something better in mileage lasting.
Should i go with Spec Stg 2+ with stock dual flywheel, or something else?
My horsepower should be around 400hp, but the extra weight make the clutches not lasting a lot.

[2jzn54]

http://www.ecstuning.com/BMW-E92-335...221/ES1897635/

if you aren't going to be upgrading your turbos get this and call it a day. 335is clutch and is considered an OEM upgrade. About the same price as the stock clutch, same feel. Won't need to buy a new flywheel either.

[MiniXP]

A lot of people are using the Stock 335is/550i clutch. Apparently it holds find on tuned 550is putting out almost 500 ft/lbs of torque. I've read they hold well on FBO 335i's, but I don't know the longevity of them, maybe some one that has had one for awhile can chime in.

I just got one installed on my car, but haven't picked it up yet.

[2jzn54]

i have one on one of my FBO 335s and its held great grips quickly, but I don't have have any real long term use only 4k miles are so. I think some others have reported its held fine for them in the longer run.

[Fundguy1]

Check how you're using your clutch too. Mines got 200,000 with a tune and still running strong on the one it was born with. Maybe you're holding it in at lights, etc. They should last a lot longer.

[chiefsotos]

Does anyone have 335is clutch tested for a long period in miles? I consider for spec 2+ because many users have this kit installed. Does anyone know how many miles does it last?

[Jklad]

I havnt seen any of the 'real' 335is cars that are FBO and tuned on here complain about their clutches going.

[chiefsotos]

So does the 335is clutch fit exactly to my bmw 2008 335? Is the correct part number be the: 21207603248?

[2jzn54]

Originally Posted by Jklad

I havnt seen any of the 'real' 335is cars that are FBO and tuned on here complain about their clutches going.

they also are much newer generally have far less miles on them are of a much smaller population size and a lot of them are DCT.. hopefully they hold up someone mentioned it was on a stg2 car and had held for 15k miles so far or something like that without hard launches. good sign, but we'll see how long it holds

Originally Posted by chiefsotos

Does anyone have 335is clutch tested for a long period in miles? I consider for spec 2+ because many users have this kit installed. Does anyone know how many miles does it last?

from my experience the stock clutch holds up to FBO and E85 just fine.. I don't frequent the strip though. If you aren't planning on going past that the 335is clutch should meet your needs unless you launch the car often.

Originally Posted by Fundguy1

Check how you're using your clutch too. Mines got 200,000 with a tune and still running strong on the one it was born with. Maybe you're holding it in at lights, etc. They should last a lot longer.

200k is quite impressive. still going strong on my original FBO E85 and all, but i have yet to break 100k lol.

Originally Posted by chiefsotos

So does the 335is clutch fit exactly to my bmw 2008 335? Is the correct part number be the: 21207603248?

direct fitment, don't need an aftermarket SMF or anything like that. Try to clean off the flywheel as best as you can and install it. Not sure on the part number too lazy to check

[chiefsotos]

To clean the flywheel, should it be taken off or can the mechanic clean it mounted?
Something else, i searched the real oem and only find this part in usa bmw 550i, not in the europe cars. Doesn't the european 550i came out with manual transmition?
Also noticed that 550i flywheel partnumber is different from ours 335?
Isn't that a problem for the clutch?
If someone can veryfied the part number i would be very gratefull.
Now i am between spec 2+ and 335is clutch..

[2jzn54]

Originally Posted by chiefsotos

To clean the flywheel, should it be taken off or can the mechanic clean it mounted?
Something else, i searched the real oem and only find this part in usa bmw 550i, not in the europe cars. Doesn't the european 550i came out with manual transmition?
Also noticed that 550i flywheel partnumber is different from ours 335?
Isn't that a problem for the clutch?
If someone can veryfied the part number i would be very gratefull.
Now i am between spec 2+ and 335is clutch..

Part number you mentioned is correct though I would just buy it from ECS tuning as its cheaper. I've noticed a lot of part numbers are different even though the parts themselves are the same.. for example I was scratching my head trying to figure out if this would work on the 335xi because the part number was different, turns out its the same.. ECS didn't believe me and went as far as checking with BMW who said it wouldn't fit because they were different parts.. They've updated the application guide since

http://www.realoem.com/bmw/showparts...21&fg=05&hl=31

http://www.realoem.com/bmw/partxref.do?part=21207603248

[2jzn54]

mechanic shouldn't charge you to clean the flywheel.. if he is take the car elsewhere.. should be part of the clutch install.

[chiefsotos]

Ok thank's a lot

[brewnami]

Needing to replace a clutch at 30,000km probably means there needs to be a driving adjustment. I have 40,000 miles on mine (stock) making around 500ft-lbs at the wheels and I've never so much as slipped the clutch. I would guess either you launch your car or beat on your clutch a lot which at that point I would recommend at least a spec stage 2+/3 at your power levels if you want to continue to do that or you are riding your clutch like a newb. Another thing that may help out is getting a ported clutch delay valve which should help with longevity.

[2jzn54]

thats true i didn't fully read through the op's post enough to see he's running through clutches abnormally fast.. if its because you are dumping the clutch all day from a dig you should probably opt for the spec 2+... otherwise there is a user error on your end.. 86k on the stock clutch with my mods and no slip..

[DuDai]

335is clutch holds fine on our 335i up into the high 500whp range actually. My buddy is using it on his 335i with those whp numbers and 600wtq+. He's done about 15 track days on that too. He doesn't launch it on the street and he limits boost in his first two gears though. But nevertheless he's pushing a lot of power on this clutch for about 40,000km now.

[Jeff@TopGearSolutions]

I've seen some guys smoke their clutches up before 20,000 miles. I attributed it mostly to driver error. I'm sure there is a fluke here and there but I've seen some pretty poor driving habits from manual drivers in my life time so nothing surprises me.

[DuDai]

Originally Posted by Jeff@TopGearSolutions

I've seen some guys smoke their clutches up before 20,000 miles. I attributed it mostly to driver error. I'm sure there is a fluke here and there but I've seen some pretty poor driving habits from manual drivers in my life time so nothing surprises me.

+1. Some people are just bad at driving manual and slip the hell out of it and ride it at intersections when sitting at an incline instead of using the brakes.

[brewnami]

Originally Posted by Jeff@TopGearSolutions

I've seen some guys smoke their clutches up before 20,000 miles. I attributed it mostly to driver error. I'm sure there is a fluke here and there but I've seen some pretty poor driving habits from manual drivers in my life time so nothing surprises me.

+1... BUT, its sounds a whole lot cooler if you tell people you need a new clutch every 30,000 kilometers (18,641 miles) because your car has way too much power than telling people you need a new clutch because you drive a manual like a 14 year old girl.

[chiefsotos]

No bad driving guys, just to heavy car with much torque. I never floor it from dead stop, only with second gear, but i floor it many time with 4th-5th gear from 3000rpm. In downhill i always brake with the engine with rev match technic. Does the rev matching technic harm the clutch a lot?
Something else, when i installed the act clutch, i put a short shift uuc and noticed i have some vibration when i put my hand on the gear level. I always thought that it was from uuc short shift, but is it possible to be from the dual mass flywheel? I mean is it a way to know if the flywhell is damaged before i take off the clutch disk?. The spec stage 2+ or 335is clutch does it necessary needs another flywheel to combined or the old one i have should be ok?

[brewnami]

Originally Posted by chiefsotos

No bad driving guys, just to heavy car with much torque. I never floor it from dead stop, only with second gear, but i floor it many time with 4th-5th gear from 3000rpm. In downhill i always brake with the engine with rev match technic. Does the rev matching technic harm the clutch a lot?
Something else, when i installed the act clutch, i put a short shift uuc and noticed i have some vibration when i put my hand on the gear level. I always thought that it was from uuc short shift, but is it possible to be from the dual mass flywheel? I mean is it a way to know if the flywhell is damaged before i take off the clutch disk?. The spec stage 2+ or 335is clutch does it necessary needs another flywheel to combined or the old one i have should be ok?

What extra weight are you referring to? Also, many people on here are running stock clutches with FBO N54s with no problems. 18,641 miles would be a manufacturer defect or really abusive driving. From the looks of it, you just have a procede, intercooler and downpipes. Certainly with the right fuel, you could have over 400lb-ft of torque at the wheels, but that isn't enough to destroy a stock clutch that quickly without a lot of abuse. Also, flooring your car in 5th gear at low RPM is horrible for the clutch.

[2jzn54]

Originally Posted by chiefsotos

No bad driving guys, just to heavy car with much torque. I never floor it from dead stop, only with second gear, but i floor it many time with 4th-5th gear from 3000rpm. In downhill i always brake with the engine with rev match technic. Does the rev matching technic harm the clutch a lot?
Something else, when i installed the act clutch, i put a short shift uuc and noticed i have some vibration when i put my hand on the gear level. I always thought that it was from uuc short shift, but is it possible to be from the dual mass flywheel? I mean is it a way to know if the flywhell is damaged before i take off the clutch disk?. The spec stage 2+ or 335is clutch does it necessary needs another flywheel to combined or the old one i have should be ok?

i floor it in second at low rpms at times.. i heel toe most turns and red lights.. outside of shoddy shifting and hard launching the car i beat on it.. and im fbo only run e85 and still on the stock clutch.. i'm thinking something is off with your method of shifting or or what you do to get the car going from a dead stop.. with roughly 140km on it...