[Timdelacerna123]

Has anyone retrofitted a m3/m4 clutch kit on a f30 335i?? Using the stock dual mass?

[Chicken_Joe]

Sub'd

[CTDrifter]

Originally Posted by Timdelacerna123

Has anyone retrofitted a m3/m4 clutch kit on a f30 335i?? Using the stock dual mass?

At minimum you would need a bell housing spacer but I'm not sure if N55 transmission output shaft would reach M flywheel. Some sort of adaptor would need to be machined up.

What I don't understand is how M gets away without misfires from the DMF. After going PS2 I was plagued with misfire until I went SMF. BTW the 550i is a hell of a clutch for the price.

[the dope steez]

Originally Posted by CTDrifter

At minimum you would need a bell housing spacer but I'm not sure if N55 transmission output shaft would reach M flywheel. Some sort of adaptor would need to be machined up.

What I don't understand is how M gets away without misfires from the DMF. After going PS2 I was plagued with misfire until I went SMF. BTW the 550i is a hell of a clutch for the price.

Yea isn't the 550i clutch the de facto OEM upgrade that bolts right on? That's what I'll be going with as soon as I roast mine

[JaredG_F30]

How is the chatter with the SMFW?

Originally Posted by CTDrifter

At minimum you would need a bell housing spacer but I'm not sure if N55 transmission output shaft would reach M flywheel. Some sort of adaptor would need to be machined up.

What I don't understand is how M gets away without misfires from the DMF. After going PS2 I was plagued with misfire until I went SMF. BTW the 550i is a hell of a clutch for the price.

[CTDrifter]

Originally Posted by the dope steez

Yea isn't the 550i clutch the de facto OEM upgrade that bolts right on? That's what I'll be going with as soon as I roast mine

Yes, I used it on my N54 stock turbo and now my PS2 EWG N55, has never slipped running 24psi. Terry recommended the 550i clutch up to about 600whp.

Originally Posted by JaredG_F30

How is the chatter with the SMFW?

It's noticeable for sure, much louder inside the car than standing next to it.

Obviously it only chatters in neutral with clutch out, for my commute this is a very small fraction of driving time so it doesn't bother me. You can also use the start/stop if going through a ton of red lights.... or turn up radio which will mask it.

The noise sucks but eliminating the misfires makes up for it...

[Drpoomanchu]

Does BMW recommend replacing the flywheeel .? Has anyone had experience with DIY on clutch replacement how much time was invested .?

[Jeff@TopGearSolutions]

The aftermarket clutch kits for E90/E92 335i and 135i also fit the F30 335i, that would likely be the easiest solution.

Originally Posted by Drpoomanchu

Does BMW recommend replacing the flywheeel .? Has anyone had experience with DIY on clutch replacement how much time was invested .?

The stock DMFW is a wear item like any other. In fact even more so because as a DMFW it's job is to absorb load and it's internal components wear over time.

It's one thing with a regular single mass flywheel where you need to worry about hot spots, glazing and uneven surface wear but the DMFW has that extra piece of internal components to add to the list.

Depending on your mileage and abuse, you may want to replace it. Unfortunately like any flywheel, you have to inspect it before anyone would know for sure.

The F chassis should be similar to the E chassis which is about a 6 hour install for a proficient mechanic.

[JaredG_F30]

Yep I remember the same thing when I installed a SMFW on my e36 M3 #racecar

Using the start-stop function is a good idea. I used to hold my clutch in to prevent the chatter b/c people would look at me like my car was broke, but whatever!

Originally Posted by CTDrifter

It's noticeable for sure, much louder inside the car than standing next to it.

Obviously it only chatters in neutral with clutch out, for my commute this is a very small fraction of driving time so it doesn't bother me. You can also use the start/stop if going through a ton of red lights.... or turn up radio which will mask it.

The noise sucks but eliminating the misfires makes up for it...

[CTDrifter]

Originally Posted by Drpoomanchu

Does BMW recommend replacing the flywheeel .? Has anyone had experience with DIY on clutch replacement how much time was invested .?

The DMF flywheel has specs online for allowed radial and axial play. YouTube has plenty of vids showing how to take measurements. Mine was still in spec and didn't bother replacing DMF when I first went 550i clutch.

You may want to change it though, since the clutch is self adjusting to replace flywheel and reuse clutch you'll need to hold it in with a puller. This was scary as hell with all the potential energy... felt like I was diffusing a bomb while handling the pressure plate...

[JaredG_F30]

Can you help me understand the link between the PS2 and the misfire with DMFW? I know the DME detects misfire through the crankshaft sensors, but what aspect of the PS2 made the crankshaft do wonky things that the DME translated into a misfire? Have other N55s with PS2 and 6MT experienced the same thing?

Originally Posted by CTDrifter

At minimum you would need a bell housing spacer but I'm not sure if N55 transmission output shaft would reach M flywheel. Some sort of adaptor would need to be machined up.

What I don't understand is how M gets away without misfires from the DMF. After going PS2 I was plagued with misfire until I went SMF. BTW the 550i is a hell of a clutch for the price.

[CTDrifter]

Originally Posted by JaredG_F30

Can you help me understand the link between the PS2 and the misfire with DMFW? I know the DME detects misfire through the crankshaft sensors, but what aspect of the PS2 made the crankshaft do wonky things that the DME translated into a misfire? Have other N55s with PS2 and 6MT experienced the same thing?

The issue is at a certain power level (~450WHP) the misfire detection no longer works properly due to the DMF. There's a good thread about it in the early e series N54 days... someone even posted link to an industry study how a DMF can cause false misfire detection.

Havent been able to get an answer but I wonder when/if the S55 guys need to go SMF.

[JaredG_F30]

Gotcha! I was wondering b/c there are several people with PS2 running 450+ WHP but the misfire thing doesn't seem to be widespread.

Originally Posted by CTDrifter

The issue is at a certain power level (~450WHP) the misfire detection no longer works properly due to the DMF. There's a good thread about it in the early e series N54 days... someone even posted link to an industry study how a DMF can cause false misfire detection.

Havent been able to get an answer but I wonder when/if the S55 guys need to go SMF.

[listed5]

Originally Posted by JaredG_F30

Gotcha! I was wondering b/c there are several people with PS2 running 450+ WHP but the misfire thing doesn't seem to be widespread.

I'm pretty sure the n54 and early n55 used a single crank trigger device, whereas the 2012+ n55 use a dual trigger system. I dm wonder if that would correct those misfires in any way?

[Munchi435i]

I'm in the process of getting the PS2 for my 435i but have the automatic transmission...is the misfiring only with the manual transmissions??

[D041987]

Originally Posted by Munchi435i

I'm in the process of getting the PS2 for my 435i but have the automatic transmission...is the misfiring only with the manual transmissions??

Yes only manuals and small percent only. Auto's don't have this issue as it uses a Torque Converter.

[codestar]

reviving because I'm 95% sure my clutch is slipping. Pretty sure the CDV caught me one too many times... was previously a honda guy and never had to deal with this (or had extra power from upgrades)

is the 335is/550i clutch 100% compatible? I've gone to a few local shops and they all get scared when I say it is a clutch from a different vehicle and then don't give me a very good quote.

i'm thinking it will be this or a spec st2+ clutch. And from what I read might as well replace the flywheel because the springs inside wear down so I'll be getting a new DMFW

Any input on either clutch setup would be great

[my335i403]

Can someone please tell me what all the dmc dme, stuff stand for

[JaredG_F30]

DMF or DMFW = dual mass flywheel
SMF = single mass flywheel
DME = digital motor electronics. Other manufacturers all it an ECU (Electronic control unit) or ICU (ignition control unit).
CDV = clutch delay valve

Originally Posted by my335i403

Can someone please tell me what all the dmc dme, stuff stand for

[13blk335ix]

will the 550i clutch bolt on to a 2013 f30 335ixdrive?

[akgambino]

Originally Posted by 13blk335ix

will the 550i clutch bolt on to a 2013 f30 335ixdrive?

Yes.

Plenty of threads and info available on this forum and on the internet in general that you can easily search for and read for yourself.

[13blk335ix]

with a 2013 bmw F30 335ix 6mt can you just purchase the 335is/550i and bolt it right up with stock flywheel? or do you need to get a different flywheel?