Clutch Talk: Upgrading BMW E46 Clutch and Ditching the Dual Mass Flywheel! 

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Where is that loud sound come from?

@@realdevbro447 Its literally the gears and half shafts spinning without being engaged. When its cold, its manageable. After driving for a while, that fluid is not as viscous and it can become much louder. Edit: Spelling

Uuc is the worst company to deal with . I would stay away from them.

That can vary widely depending on what shop you use.

No the thicknesses are the same, the weight is removed from the backside of the flywheel.

Its probably you input shaft bearing, especially if it gets worse when the transmission is warm.

No pressure plate does. Some clutch hydralic systems do.

More like $1500, where did you get $10,000?

By the factory.

Google is your friend!

@@motoiq very helpful thanks

Probably not but the harmonic balancer may.

It's all related to the oil pump chain not having a tensioner. That causes excessive chain play and vibration.

@@nvl2691 SMF will contribute to oil pump failure?

@@reza_dc2 Yes it will, since the stock dual mass flywheel absorbs part of the engine's vibrations. Without it, the oil pump chain vibrates even more. If you do fit a lightweight flywheel, make sure to fit an oil pump chain tensioner. There's kits that allow you to fit the S54 tensioner on an M54 block.

@@nvl2691 I appreciate that info ! any chance you know who sells the kit? any other thing I can do to protect the oil pump?

No. The labor is more than that. You get what you pay for.

@@motoiq cap

Any ACT dealer.

I would disagree with you. The only ones I know of are some German cars and the Z cars. I am sure they are many others but I would not say most.

@@motoiq Actually this is not an opinion, but a matter of fact. Find me a few modern manual cars (15 years old and younger) with a single mass flywheel from the factory. You will have a hard time compiling this list. If you look at manual cars sold over the last 10-20 years, pretty much all have a dual mass flywheel. That includes all the German brands (BMW, Audi, VW, Porsche). You won't find any factory single mass flywheel on these cars. Same for American manufacturers: Ford Mustang, Chevy Camaro, Cadillac CTS 4V and 5V. There are two reason for this. First, the dampening achieved with a dual mass flywheel is far superior than what is possible with a sprung hub on the clutch because of the higher stationary inertia of the undampened part of the flywheel. Second, removing the sprung hub from the clutch disk reduces rotational inertia on the input shaft and load on the synchros.

You are right because we hardly have gotten a clutch change on those cars because they are largely not our market. I totally agree with you on the dual mass being much better at damping vibrations than a disc sprung hub by an order of magnitude.

They will not reduce your top speed.

@@motoiq 😂 actually it will reduce top speed because you dont have any stored energy like heavy flywheels do and it will take lot of effort for a engine to maintain the speed and also i know what am talking about thrs also a video about it on youtube

@@beowolf9991 a video on RU-vid, it must be true.

@@phillipcarder2177 lol lightweight flywheel really slowed the car after 80mph

he looks s high loll me at work

@@brandongomez1806 its cause how high those ceilings are and how bright it is in there. Beauty shop id be smiling too

Any time!

I believe Bimmerworld has full kits, but I'm sure you figured it out by now.

Southern California if you are local.

The clutch will work fine.

No

@@motoiq Is there a clutch brand you recommend?

It depends on what you are doing and how much power/torque you make

@@motoiq Just looking to unlock my ECU and maybe a Stage 2 with some E50 at the most. 500-550 Hp

You can use centerforce, ACT or Mcleod single disc street upgrade level.

If you mean the clutch pedal sticking to the floor at high RPM, that is a phenomenon called overcentering and it can be fixed by the design of the diaphragm spring. lacking that you can do a pedal stop. If you mean shift blocking at high rpm, that is a transmission issue independent of the clutch, usually syncos. On EVOs there is an accumulator valve that delays clutch action, and can cause grinding and missed shifts. You can replace this with the one way delay valve by clutch masters and help your shifting while still cushioning your driveline.

yes

@@motoiq Thank you.

No, it doesn't affect wear at all. On Audi's, the rattle isn't that bad but Audi customers are probably picky.

My GTI has crazy clutch chatter. I'm told 75W-90 gear oil helps a ton.

@@BenDover-io9vg Not for clutch chatter. The trans oil has nothing to do with that.

@@motoiq I think clutch chatter is a term that's thrown around loosely. If my research is correct, the noise comes from gears rattling in the transmission.

@@BenDover-io9vg Yes you are correct, also play in the input shaft bearing.