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Old 05-30-2013, 07:11 PM   #1
Join Date: Jan 2013
Location: Base Borden/Barrie
Posts: 65
Dual mass fly wheel to uuc lightwieght single mass

Hello gentlemen,
My car is in need of a new clutch and flywheel. So I'm planning on purchasong this kit which has a single mass lightwieght flywheel and a older series m5 clutch. It's gotten a shit ton of good reviews and I'm pretty stoked to throw it into my ride.

To the point- I'm curious if I will need a conversion kit since I'm stitching from the lazy mans dual mass to a lightwieght single mass?
Also since my tranny will be opened up is there any suggestions on things to have done at the same time since she's gonna be all opened up?


Last edited by G12; 05-30-2013 at 07:15 PM. Reason: .
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Old 05-30-2013, 11:53 PM   #2
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Join Date: Feb 2008
Location: St. George, ON
Posts: 1,661
1. Would suggest JBR setup, I prefer to UUC.

Difference would be more clutch chatter than oem with any of these kits.

2. Any driveline parts -- guibo if needed, seals if leaking, bolts if rusted

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Old 05-31-2013, 10:45 AM   #3
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Join Date: Apr 2007
Location: Toronto, ON, Canada
Posts: 934
I get chatter with my OEM clutch.
Aside from the chatter, how does the clutch feel? Heavier? Better engagement feel?

2002 E46 325ci // 5spd // ISC N1 Coilovers
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Old 05-31-2013, 04:23 PM   #4
3rd Gear Member
Join Date: Dec 2011
Location: Toronto, Canada
Posts: 418
I have the UUC lightweight single mass with M5 clutch. It's lighter than stock, amazing grip and has some chatter. It's holding the horsepower I have now, so it's pretty strong.
I also removed the clutch delay valve.

I dont thnk you'll be disappointed.
Now for the supercharger....
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Old 06-16-2013, 10:44 PM   #5
1st Gear Newbie
Join Date: May 2012
Location: Montreal
Posts: 49
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I used the ClutchMasters kit which I am pretty certain uses a JB Racing Flywheel.
They say no but is you put the two next to each other...

Gear rattle is very present especially if you turn on the A/C.

Your gearbox will not be taken apart unless you have reason to do it. It just comes out.

This is THE time to change bushings on your shifter mechanism or throw in a short shifter kit. For an E46 325i with 5 speed, you should be able to pick up a factory short shift lever for around $60 and all the plastics for another $30. That way your shifter will feel ALL NEW.

Another item to consider is a braided stainless steel clutch line which will have the automatic benefit of eliminating the so called CDV.

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