[trixdout]

Originally Posted by JamesM3M5

There are a few bolts and other bits to replace. The clutch kit comes with 6 pressure plate bolts, clutch disc and pressure plate, a throwout bearing, and release lever arm. Do not separate the bearing from the arm since the it has two different pivot depths, and it comes installed the proper way. Get it wrong, and you'll have to pull the trans again.

Replace the three Guibo bolts and nuts, four aluminum trans bolts - either get a new aluminum bolt kit or buy 4 steel bolts sold individually listed in the parts catalog, and check your shift rod seal. They commonly leak on all BMWs once they get some age. Get some new exhaust gaskets from the downpipes/cats to mid section and 4 new copper nuts. Get a new plastic pivot pin and retainer spring clip. Grease the tip of the pin and clutch slave with a dollop of silicone grease. Do not bother replacing the pilot bearing. It is a major PITA. Clean it out with some brake cleaner and put in some fresh grease, any wheel bearing grease with moly will do.

All of the pressure plate and driveshaft to Guibo bolts are torque-to-yield, so pay attention to the torque specs!

Going through ECS tuning, there are 2 types of bolts listed, both aluminum for transmission mounting. One is M12x50 and the other is M10x85. What thread pitch are all the bolt necessary to be removed for the transmission to come out?

[Ddang06]

Any updates on these 550i clutches ? Read too many spec 2+ horror stories . Some have decent luck , others are replacing in less than 10k miles ..

[c2513892]

does the 335is clutch fit the 335i e90 with the n55 engine as well?

[c2513892]

http://www.clutchmasters.com/fx300-r...-03075-hdff-r/

has anyone try clutch masters FX300-R: BMW 335I 6cyl 3.0L E90 Turbo N55 (US Model) 2011-2012 (03075-HDFF-R) $895.00

[C.Pop]

I have a single mass flywheel and the 550i clutch going in tomorrow (Mon 10/20/2014). If all goes well (or not) I'll update this thread.

[c2513892]

Thanks C.Pop, has anyone try the 550i clutch in the n55 e90? it has been confirmed that it work on the n54 from what I have read, but have not found an answer on the n55 335i, does anyone have advice on a single mass flaywheel for the the n55 e90, maybe I should do it while I am there.... any suggestions would be appreciated.

[TotalBlackout]

Originally Posted by C.Pop

I have a single mass flywheel and the 550i clutch going in tomorrow (Mon 10/20/2014). If all goes well (or not) I'll update this thread.

Good news. That's the setup I want to do whenever my clutch gives out.

[ajehoti]

I just installed a SPEC stage 3+ with a single mass flyhweel from SPEC and it makes crazy noise when in gear. Not sure if it is normal but considering dropping trans back down and trying to see what happened and maybe use this 335is clutch. My car is E85 and meth, just I know I want to make over 550whp soon and I know the dual mass will give me problems. Cant take the noise my car makes, its so loud when driving. Maybe not normal?

[C.Pop]

Quick Update:

Installed the appropriate Spec single mass flywheel (I have a 2007, so I want SB53S flywheel. No -1, -2, -3 or -anything, just SB53S) with the 335is/550i clutch today, along with a short throw shifter, clutch delay valve delete, and black UUC transmission mounts (the enforcer kit... so everything).

I can confirm that SB53S flywheel will work on the 335is/550i clutch (my car was built July 2007... older 8 bolt style; if you have late models this may change things... check!!!). This is solid hub clutch to SMFW, so make sure that's what you want before you proceed. I can confirm that the short throw shifter makes shifts, well, shorter. I can confirm that the UUC transmission mounts certainly work. I can also confirm that this setup is loud as shit compared to stock. Sounds like a diesel is loudly idling next to my N54 by my transmission. Noise mostly goes away with clutch in. This may get better in time.

Initial thoughts are positive. I don't mind the noise but it certainly changes the appropriateness of leaving your car idle while good-byes are said/or other certain social circumstances, which as of this moment I'm happily committing myself to not concern myself with. The car feels good, very tight. The clutch feels stock. I'll review the clutch more when I have more time driving on it and it's broken in properly (or improperly... lol).

[Aerotest]

Originally Posted by C.Pop

I have a single mass flywheel and the 550i clutch going in tomorrow (Mon 10/20/2014). If all goes well (or not) I'll update this thread.

Just asking......shouldnt you run a sprung hub clutch plate with a SMFW? I thought the 550i was a solid hub clutch?

[C.Pop]

Originally Posted by Aerotest

Just asking......shouldnt you run a sprung hub clutch plate with a SMFW? I thought the 550i was a solid hub clutch?

Yep, you're right, certainly for a daily driver this is probably not the optimal choice. It's loud, very loud, and wear on the input splines on the transmission shaft is a concern. That said, the feel of it is absolutely glorious. Zero muting of any throttle input whatsoever.

The clutch itself feels like stock; engagement is like stock, pedal feel is like stock. It's like stock.

[ajehoti]

Originally Posted by C.Pop

Quick Update:

Installed the appropriate Spec single mass flywheel (I have a 2007, so I want SB53S flywheel. No -1, -2, -3 or -anything, just SB53S) with the 335is/550i clutch today, along with a short throw shifter, clutch delay valve delete, and black UUC transmission mounts (the enforcer kit... so everything).

I can confirm that SB53S flywheel will work on the 335is/550i clutch (my car was built July 2007... older 8 bolt style; if you have late models this may change things... check!!!). This is solid hub clutch to SMFW, so make sure that's what you want before you proceed. I can confirm that the short throw shifter makes shifts, well, shorter. I can confirm that the UUC transmission mounts certainly work. I can also confirm that this setup is loud as shit compared to stock. Sounds like a diesel is loudly idling next to my N54 by my transmission. Noise mostly goes away with clutch in. This may get better in time.

Initial thoughts are positive. I don't mind the noise but it certainly changes the appropriateness of leaving your car idle while good-byes are said/or other certain social circumstances, which as of this moment I'm happily committing myself to not concern myself with. The car feels good, very tight. The clutch feels stock. I'll review the clutch more when I have more time driving on it and it's broken in properly (or improperly... lol).

Do you have any noise while in gear in the lower rpms?

[C.Pop]

Yep.

[Aerotest]

Originally Posted by C.Pop

Yep, you're right, certainly for a daily driver this is probably not the optimal choice. It's loud, very loud, and wear on the input splines on the transmission shaft is a concern. That said, the feel of it is absolutely glorious. Zero muting of any throttle input whatsoever.

The clutch itself feels like stock; engagement is like stock, pedal feel is like stock. It's like stock.

Thanks the feedback. I have been contemplating the 550i clutch with MFactory flywheel, so your feedback is very helpful. I want rid of the DMFW for safety reasons at the higher hp levels the e85 brings. There are trades with every option.....

[Jeff@TopGearSolutions]

Originally Posted by Aerotest

Thanks the feedback. I have been contemplating the 550i clutch with MFactory flywheel, so your feedback is very helpful. I want rid of the DMFW for safety reasons at the higher hp levels the e85 brings. There are trades with every option.....

The DMFW is fine for anything the stock turbo's can throw at it, including E85. Although if you are replacing your clutch you should consider a new DMFW, I wouldn't use an old DMFW on a new clutch.

Originally Posted by ajehoti

I just installed a SPEC stage 3+ with a single mass flyhweel from SPEC and it makes crazy noise when in gear. Not sure if it is normal but considering dropping trans back down and trying to see what happened and maybe use this 335is clutch. My car is E85 and meth, just I know I want to make over 550whp soon and I know the dual mass will give me problems. Cant take the noise my car makes, its so loud when driving. Maybe not normal?

That's normal for a single mass flywheel. It needs to break in and it will probably take a good 1000 miles before it quiets down a little. It will still always have chatter. If you are literally grinding as you enter a gear then that would not be normal. If there is chatter at idle then that would be normal of the SMFW.

[C.Pop]

I just asked Spec about the input splines concern... they said that the dampening is just for smooth starting out, that the splines will be fine, they see the same load. So it's okay, because racecar. lol

Tranny noise is a little quieter on day 2.

Honestly a slightly lighter DMFW with much higher horsepower capability would be wonderful.

[Jeff@TopGearSolutions]

Originally Posted by C.Pop

I just asked Spec about the input splines concern... they said that the dampening is just for smooth starting out, that the splines will be fine, they see the same load. So it's okay, because racecar. lol

Tranny noise is a little quieter on day 2.

Honestly a slightly lighter DMFW with much higher horsepower capability would be wonderful.

Spec makes an aluminum and steel DMFW. I don't know if anyone actually found the limits of the Spec DMFW. All the issues we've seen about DMFW were only from the factory DMFW, correct me if I'm wrong.

So it's possible the aftermarket options like Spec may be more balanced then the OEM counterpart, just thinking out loud. Unfortunately, someone would need to be a guinea pig unless Spec can someone how prove to us that their flywheel will exceed OEM specs in balance.

[Aerotest]

C.Pop - Thanks for the update.

I had a bad experience with Spec on my C5Z and refuse to run another on principal.....I know they are reliable on this platform. I am looking at southbend and waiting on the MFactory dual clutch to see what price they are at. DMFW is going away because I do plan RBs in the future. Stock clutch is holding fine at 420/465, just being proactive and planning my winter upgrade project. Thanks to all for the info....

[Jeff@TopGearSolutions]

Originally Posted by Aerotest

C.Pop - Thanks for the update.

I had a bad experience with Spec on my C5Z and refuse to run another on principal.....I know they are reliable on this platform. I am looking at southbend and waiting on the MFactory dual clutch to see what price they are at. DMFW is going away because I do plan RBs in the future. Stock clutch is holding fine at 420/465, just being proactive and planning my winter upgrade project. Thanks to all for the info....

If it's any consolation, all clutch companies have a bad rep on 1 platform or another. In my opinion and experience, it's finding the right clutch for the platform you are on that is the most important. All too often I have customers that say that had XYZ clutch on their Subaru/Evo/Honda and want to carry over those expectations onto a different platform. First thing I tell them is, what's the most popular clutch on the platform you are in now, disregard what you've used in the past because it might not hold water on a different platform.

That being said the 2+ is popular and so is the 3+ from Spec. We've had only a couple customers complain of faults from Spec and we've had a lot more complain about the ACT. The clutch masters isn't too popular so I have no direct feedback on that. There is also the fact that one needs to take info about clutch kits with a grain of salt at times. On one of the platforms I was on a few years back I ran a competition clutch kit, I loved it, it was the best aftermarket clutch I had. On the same token, other people in the platform suggested it was the worst and they would never buy again, I sometimes wonder what makes peoples opinions so different, or maybe it was install error.

Southbend has just recently been released. I've yet to hear any feedback but we have sold a few.

[Aerotest]

Thanks Jeff and I agree on all acounts. I cant believe ACT is still in business b/c they seem to be junk on all platforms. South Bend has a great rep so I am thinking of going that route. Glad to hear you are a dealer....will touch base with you by November.

[blaster3500]

Originally Posted by Jeff@TopGearSolutions

Spec makes an aluminum and steel DMFW. I don't know if anyone actually found the limits of the Spec DMFW. All the issues we've seen about DMFW were only from the factory DMFW, correct me if I'm wrong.

So it's possible the aftermarket options like Spec may be more balanced then the OEM counterpart, just thinking out loud. Unfortunately, someone would need to be a guinea pig unless Spec can someone how prove to us that their flywheel will exceed OEM specs in balance.

You mean spec has an aluminum and steel SMFW correct? Just want to make sure I am not missing anything in picking out my new clutch/fw setup.

[ajehoti]

Originally Posted by blaster3500

You mean spec has an aluminum and steel SMFW correct? Just want to make sure I am not missing anything in picking out my new clutch/fw setup.

They have a steel and aluminum SMFW