[jk315]

Just trying to figure this out before I pull the trigger on the 335is clutch this week
1. The oem 100 percent fits a e90 n54 6 speed correct? 2. Would be I've read claims on here the IS clutch is heavier duty and can handle up to 550/tq but the factory specs of it for a 2011 are 320 hp and 332/torque. ... can anyone chime in who has this clutch or knowledge of it and explain. Thanks in advance .

[MiniXP]

Originally Posted by jk315

Just trying to figure this out before I pull the trigger on the 335is clutch this week
1. The oem 100 percent fits a e90 n54 6 speed correct? 2. Would be I've read claims on here the IS clutch is heavier duty and can handle up to 550/tq but the factory specs of it for a 2011 are 320 hp and 332/torque. ... can anyone chime in who has this clutch or knowledge of it and explain. Thanks in advance .

I don't have any knoweldge of how the actual clutch is built and what makes it stronger, but the 550+ tq number people say is from the fact that it is the same clutch used in the 550i. When I checked some 5 series forums, it seems that there are a lot of tuned 550i's with that much tq with the stock clutch. Looks like the 550i has 400hp and 450ft/lbs of torque stock.

[335NJ]

Most people suggest it's better holding force due to the stronger pressure plate. Just search here, and N54Tech and read through plenty of threads covering this topic.

[Oo vvR3cKz oO 619]

http://www.ecstuning.com/News/BMW_Bi...012_2013_2014/

I know a few guy's on here running this set up, so for so good.
I'll try to get them in here for some feedback when I'm off work

[Myrder]

pressure plate has higher clamping force, both clutches are an organic material.

[Jeff@TopGearSolutions]

There is limited time on these clutches. The for what it's worth my stock clutch held 480WTQ but not for long. What I'm saying is, I don't feel there is sufficient seat time on the 335is option unless someone can chime in that they put 35,000 miles on this clutch with an excess torque of 475WTQ.

[MiniXP]

Originally Posted by Jeff@TopGearSolutions

There is limited time on these clutches. The for what it's worth my stock clutch held 480WTQ but not for long. What I'm saying is, I don't feel there is sufficient seat time on the 335is option unless someone can chime in that they put 35,000 miles on this clutch with an excess of torque of 475WTQ.

Yea, most I could find was someone that has about 12k on one FBO.

I tried searching around some 5 series forums for more info, but couldn't find much. When you google it mostly just topics made by people with 335i's show up that are thinking of it as an upgrade.

I've had one in for about 4,000 miles. I'm stock so I can't really speak to holding power, but the feel is just like the stock clutch.

I was getting a new clutch and don't plan on doing any crazy mods. 335is clutch was the same price as stock, so I figured why not.

It could be taken as a good sign that not many people with 550i's talk about clutches on forums, maybe that means they aren't having any issues.

[Myrder]

Originally Posted by Jeff@TopGearSolutions

There is limited time on these clutches. The for what it's worth my stock clutch held 480WTQ but not for long. What I'm saying is, I don't feel there is sufficient seat time on the 335is option unless someone can chime in that they put 35,000 miles on this clutch with an excess of torque of 475WTQ.

I have more miles FBO(18-19psi w/12.5d) with the 335is clutch, than I do when my stock clutch slipped at 15psi stock map.

When I did the swap the stock clutch has plenty of life left in it, it was strictly the pressure plate failing.

There are a few running RBs and one running stg2+ at 550rwtq holding after a few thousand miles. But I am not saying it's a 600rwtq clutch. I do believe it can hold FBO levels perfectly fine.

edit:
I'm at 15k FBO with this clutch.

[jk315]

Yeah I mean I got the car w 68k tuned it within 1k and only have had it tuned on aggressive map on cobb v3 for 4k miles and my clutch just started slipping. ...I'm assuming this isn't normal just because I'm tuned to go through clutches on the regular? If so I'm in trouble .

[jippii ensio]

Originally Posted by Myrder

I have more miles FBO(18-19psi w/12.5d) with the 335is clutch, than I do when my stock clutch slipped at 15psi stock map.

When I did the swap the stock clutch has plenty of life left in it, it was strictly the pressure plate failing.

There are a few running RBs and one running stg2+ at 550rwtq holding after a few thousand miles. But I am not saying it's a 600rwtq clutch. I do believe it can hold FBO levels perfectly fine.

edit:
I'm at 15k FBO with this clutch.

The 335is clutch 550 rwtq for several thousand miles is a 600 lbft clutch. Most aftermarket clutches can't do it.

[Myrder]

Originally Posted by jippii ensio

The 335is clutch 550 rwtq for several thousand miles is a 600 lbft clutch. Most aftermarket clutches can't do it.

You can say that, but can you prove it?

Clutches are a weird thing, some people have a clutch last 100k miles. Others burn the clutch up after 15k miles. Driver style and skill greatly affect clutch life. I personally don't know how those people drove the car, so it holding 550rwtq for a couple dozen pulls doesn't mean its a 600tq clutch.

Same principal of an engine making 800rwhp for a few dyno pulls, meaning its a 1000hp reliable block.

[Jeff@TopGearSolutions]

Originally Posted by Myrder

I have more miles FBO(18-19psi w/12.5d) with the 335is clutch, than I do when my stock clutch slipped at 15psi stock map.

When I did the swap the stock clutch has plenty of life left in it, it was strictly the pressure plate failing.

There are a few running RBs and one running stg2+ at 550rwtq holding after a few thousand miles. But I am not saying it's a 600rwtq clutch. I do believe it can hold FBO levels perfectly fine.

edit:
I'm at 15k FBO with this clutch.

This is helpful and I believe it. The problem with the stock clutch is just the pressure plate, the clutch material is usually fine.

My stock clutch lasted about 22,000 miles (tuned nearly all of them) before it started to slip in the meat of the torque band. I ended up dialing out some boost in the mid range to save the clutch for a little bit.

It really comes down to driving habits and abuse. Some people drive manual vehicles and clutch slip a lot more then others in their daily commute, usually without even noticing. I know a few guys with the 335i that had some bad driving habits and had their stock clutches fail before 15,000 miles (stock). So driving habits are definitely a factor in clutch life too.

[Myrder]

Originally Posted by Jeff@TopGearSolutions

This is helpful and I believe it. The problem with the stock clutch is just the pressure plate, the clutch material is usually fine.

My stock clutch lasted about 22,000 miles (tuned nearly all of them) before it started to slip in the meat of the torque band. I ended up dialing out some boost in the mid range to save the clutch for a little bit.

It really comes down to driving habits and abuse. Some people drive manual vehicles and clutch slip a lot more then others in their daily commute, usually without even noticing. I know a few guys with the 335i that had some bad driving habits and had their stock clutches fail before 15,000 miles (stock). So driving habits are definitely a factor in clutch life too.

Completely agree. With the experience I've had so far with this clutch, I can only vouch for its FBO levels. Seems to do just fine at that, I've abused it at the drag strip quite a few times with no issues.

[C.Pop]

6-7k on my 335is/550i clutch now, 4-5 of that VTT2+ at 550 wtq+. No slippage. Don't think of it as the 335is clutch, rated for 335is power, think of it as the 550i clutch. Time will tell of course but so far so good.

[AWSAWS]

Originally Posted by Jeff@TopGearSolutions

There is limited time on these clutches. The for what it's worth my stock clutch held 480WTQ but not for long. What I'm saying is, I don't feel there is sufficient seat time on the 335is option unless someone can chime in that they put 35,000 miles on this clutch with an excess of torque of 475WTQ.

Would that be with a flash to reduce clutch slippage?

I run a N54 335i DCT here in the UK. I'm about to run meth. I don't have a flash for the transmission at this stage. Do you think i'll need one? I'm running a JB4 with catless downpipes.

Thanks

[dbworld4k]

Originally Posted by Myrder

I have more miles FBO(18-19psi w/12.5d) with the 335is clutch, than I do when my stock clutch slipped at 15psi stock map.

When I did the swap the stock clutch has plenty of life left in it, it was strictly the pressure plate failing.

There are a few running RBs and one running stg2+ at 550rwtq holding after a few thousand miles. But I am not saying it's a 600rwtq clutch. I do believe it can hold FBO levels perfectly fine.

edit:
I'm at 15k FBO with this clutch.

+1 when I thought my stock clutch went, it was the PP too.

I've got around 10k on my 335iS clutch kit FBO custom PTF tune at 415wtq

[Myrder]

Originally Posted by AWSAWS

Would that be with a flash to reduce clutch slippage?

I run a N54 335i DCT here in the UK. I'm about to run meth. I don't have a flash for the transmission at this stage. Do you think i'll need one? I'm running a JB4 with catless downpipes.

Thanks

So this clutch is for a manual not a DCT.

[jk315]

Has the guys who have gone with the 335IS clutch upgraded to a dual flywheel or just kept the stock 335i flywheel?

[Jeff@TopGearSolutions]

Originally Posted by AWSAWS

Would that be with a flash to reduce clutch slippage?

I run a N54 335i DCT here in the UK. I'm about to run meth. I don't have a flash for the transmission at this stage. Do you think i'll need one? I'm running a JB4 with catless downpipes.

Thanks

This clutch kit is for Manual 6 Speed only, not DCT.

I recommend talking to BURAQ, he has plenty of hard miles and track time on his DCT with full bolt on modifications, he'll be the most knowledgeable when it comes to DCT.

Originally Posted by jk315

Has the guys who have gone with the 335IS clutch upgraded to a dual flywheel or just kept the stock 335i flywheel?

The stock 335i Flywheel is Dual Mass also.

So the question is how worn is your DMFW and how many miles on it. If you have excess of 75K miles I'd replace it because they become imbalanced and literally fall apart at high mileage.

You can go with an OEM DMFW or LUK DMFW.

If you intend on upgrading your turbo's then you'll need to switch over to a single mass flywheel.

[jk315]

I really appreciate all the comments back regarding the clutch. I've talked to a few Indy BMW shops, one says that the 335is clutch will experience chatter with the stock flywheel and needs to be upgraded. Although, I did get the sense from him that he's only did this at his shop once or twice. Another shop quoted me $1200 with tax for the OEM 335is clutch with install and a 2 year 24/mo warranty. Only thing he did state is that for some reason the 335is clutch doesn't work with the swap, (meaning its not compatabible to upgrade to the 335is clutch) than the cost of the part I have to pay. But since reading all the posts, seems like the clutch goes right on without any issues. Only problem I may or may not have is needing a new flywheel as im at 73k. Not planning on upgrading turbos or anything crazy like that until warranty is done which I paid $2500 for and thats at 125k.

[torrque]

I am also using the 335is clutch setup from ecstuning, over 12k miles , no issues, no chatter, perfectly fine.

My car is stock now (engine I think just blew today though ) but I did drive it boosted with jb4 on the new clutch setup, holds perfectly fine. I highly recommend it.

Cheers

[jippii ensio]

Originally Posted by jk315

I really appreciate all the comments back regarding the clutch. I've talked to a few Indy BMW shops, one says that the 335is clutch will experience chatter with the stock flywheel and needs to be upgraded. Although, I did get the sense from him that he's only did this at his shop once or twice. Another shop quoted me $1200 with tax for the OEM 335is clutch with install and a 2 year 24/mo warranty. Only thing he did state is that for some reason the 335is clutch doesn't work with the swap, (meaning its not compatabible to upgrade to the 335is clutch) than the cost of the part I have to pay. But since reading all the posts, seems like the clutch goes right on without any issues. Only problem I may or may not have is needing a new flywheel as im at 73k. Not planning on upgrading turbos or anything crazy like that until warranty is done which I paid $2500 for and thats at 125k.

LOL@their statements. If the "stock flywheel chatters", what is the upgraded one that does not chatter? A single aluminium flywheel? [sarcasm]