DIY Silent Twin Plate Clutch UniClutch

ShocknAwe

Captain
Jan 24, 2018
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Charleston, SC
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N54/3 1er ///Mutt
Thought id throw in my 2 cents.

Did a manual swap on my 335d and decided to use the uniclutch track with a smf. Can confirm it chatters, loud enough to hear it through the centre console. Have to raise the idle rpm to 850 to quiet it down a bit. Sounds like a semi truck at low rpm.

I think it will be quieter with a n54 but i dont think it will get rid of it completely.

Awesome feedback

Would definitely be quieter with a N54. As an owner of both M57 and N54 engines the M57 is definitely orders of magnitude worse in terms of chop chop chop.
 

EX0PIL0T

Lurker
Nov 5, 2023
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Too many burnouts. Bye bye factory clutch. Just ordered a clutch and MFactory SMFW. Should be in by the end of the month, I'll get videos of the chatter, but with any luck it will be like this supra.
 
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Brule

Sergeant
Feb 20, 2017
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335i 2007 6spd manual
Nice!
All cars seem to be very quiet or cant hear anything.
Glad you bought one the others suck.
 

Brule

Sergeant
Feb 20, 2017
384
453
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335i 2007 6spd manual
Update : Around 530hp mainline hub or 600hp on dyno jet you will get false knock and missfires on a oem dmfw. If you are under 500hp its ok.

You need a single mass over 530hp is what I found
 
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florida2002m3

New Member
Jan 16, 2025
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I just upgraded my turbos. Currently working with tuner. Should be 550+wtq/hp once done. I know my 335is/550i clutch will start to slip as we turn up power, so I am planning ahead. My DMFW is definitely fried, making all sorts of noise for the last year or so.

As such I plan to go SMFW (steel) with UniClutch

A few questions:
What SMFW did you go with?
I am thinking Turner or Mfactory.... priced about the same, similar weight.

Since the Uniclutch (all dual plates) dont rely on the flywheels friction surface, could you use an old/used (not resurfaced) SMFW, bringing price way down?

The PN you listed "UC0821200" is for their "track" clutch. I couldnt find any options for their "sport" clutch on their website..... is "track" the only available option for our chassis?
Or since the "track" is only ~$100 more for 300 ft lbs than the "sport", with the "same pedal feel"..... no one bothers with the "sport"

Not a lot of info on these guys (new to market), the simple response of "google it" doesnt seem to work with this setup...... I appreciate your help!
 

EX0PIL0T

Lurker
Nov 5, 2023
13
2
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A few questions:
What SMFW did you go with?
I am thinking Turner or Mfactory.... priced about the same, similar weight.

Since the Uniclutch (all dual plates) dont rely on the flywheels friction surface, could you use an old/used (not resurfaced) SMFW, bringing price way down?

The PN you listed "UC0821200" is for their "track" clutch. I couldnt find any options for their "sport" clutch on their website..... is "track" the only available option for our chassis?
Or since the "track" is only ~$100 more for 300 ft lbs than the "sport", with the "same pedal feel"..... no one bothers with the "sport"

Not a lot of info on these guys (new to market), the simple response of "google it" doesnt seem to work with this setup...... I appreciate your help!
I went with mfactory since I have one of their differentials and it’s been great. Turner customer support is absolute horse shit in my experience so I’d never buy something as important as a flywheel from them personally.

I also reached out to UniClutch before I ordered and they don’t recommend anything other than the track clutch for these cars due to the torque produced. They still drive almost the same. Watch the video I linked in my last comment. The guys Supra has a single mass flywheel and the UniClutch track.

The ‘google it’ response isn’t really common here. Spool street hasn’t been infested with snobs yet thankfully
 
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florida2002m3

New Member
Jan 16, 2025
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Thanks for the info. Did my first log last night. 335is clutch slipped in 4th, then an hour later in 3rd......... the good news is that even with a base tune (w/o meth) its producing more tq than my strung out tune with meth on the old snails. Bad news: gotta spend more $$ on a clutch/FW.

I will likely rock the same setup as you (assuming the mfactory comes in 6 bolt.
 

florida2002m3

New Member
Jan 16, 2025
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Interesting thought, could you use a flywheel from an automatic? I would think that there might be some driveshaft differences.... negating the cheap/easy reason to use a flex plate.

Did you have to play around with any spacers during your install? Or did they send you specific instructions to bolt it up to an n54?
 
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EX0PIL0T

Lurker
Nov 5, 2023
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Interesting thought, could you use a flywheel from an automatic? I would think that there might be some driveshaft differences.... negating the cheap/easy reason to use a flex plate.

Did you have to play around with any spacers during your install? Or did they send you specific instructions to bolt it up to an n54?
Mines been stuck in shipping purgatory because it was routed through china. I swear this happens every year with something. Anyways I was thinking the same thing. I really want to use the slg dct flywheel, but since my car is barely drivable at the moment that will have to wait for the next replacement
 

florida2002m3

New Member
Jan 16, 2025
5
0
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Mines been stuck in shipping purgatory because it was routed through china. I swear this happens every year with something. Anyways I was thinking the same thing. I really want to use the slg dct flywheel, but since my car is barely drivable at the moment that will have to wait for the next replacement
Where did you order from? I plan to order from LMPerformance. They are USA, I am USA... so I hope they dont drop ship from overseas.
 

EX0PIL0T

Lurker
Nov 5, 2023
13
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Where did you order from? I plan to order from LMPerformance. They are USA, I am USA... so I hope they dont drop ship from overseas.
Uniclutch directly. You can order from other suppliers like napa, but I'd rather not have a warranty for a clutch of all things go through a third party as they stated would happen in emails. Either way, only UniClutch and some less than glowing ebay sellers had the fitment kit so that was a no brainer too.
 

florida2002m3

New Member
Jan 16, 2025
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Got the clutch yesterday (along with all the other maintenance parts), just in time for the weekend.
Ordered the mfactory flywheel. Ecs was $50 cheaper than everywhere else. Guess what part Im waiting on? Flywheel. Shoulda known better, I had hoped that Ecs had changed :(