Lightweight Flywheel Review: UUC Motorwerks - E46 BMW 325i
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- Опубліковано 10 жов 2024
- A review of a lightweight flywheel and clutch kit from UUC Motorwerks. This flywheel changed how my car shifts through the gears and added a noticeable power advantage.
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I was looking up reviews for this specific flywheel and this is the only video I saw, then I was SHOCKED to see it was from throttle house! Right on!
Response is probably unlikely but was this flywheel still for sale when you commented and possibly now too?
Super professional, great presentation. Would normally never watch a whole 10 minute in-car vlog. Subbed.
Bear in mind that the noise and vibration at idle will be quite low on this car because it's a nicely balanced straight 6 engine. On a 4 cylinder car the vibrations are going to be a lot worse. But it's a nice review, you have a good style of presentation.
I can relate to spending 2k on a performance clutch kit and driving around with my gas light on cuz I can't afford to fill it up
That's when you are wrong! Lesser gas = Lesser weight = Better performance!!! XD
@@roytan6228 "lesser gas" equals burnt out fuel pumps, the gas is what keeps them cool
Fun to go back and watch some of the original videos - Throttle House has come a long way!
you host your show as if I turned on the tv. natural. sub'd
Same here I like the guy👍🏻🇬🇧
Wow this is how you guys started?... hectic change. Good job throttle house. Respect
Great way to explain it. When you said sometimes you mess up and you jerk the car at startup - I have a solution for you! Get rid of your CDV (clutch delay valve) and put in a stainless steel braided slave cylinder hose. I am an experienced clutch driver but on the bmws that have those stupid delay valves I always felt like wtf is wrong with me. Why is this happening. Well now it never happens and I’ve had it mine like I explained for about three years now!
EDIT: I heard at the end you already did this so never-mind HAHA!
Great explanation of the experience of using a single mass flywheel and corresponding clutch. Definitely has me leaning toward this type of setup in my MKVI GTI! I particularly liked the information about rev-matching and how that experience is much better and enjoyable.
Thanks a lot!
this is so cool, I watch throttle house almost daily I didn’t even realize this was the channel when I clicked this video (“wow that really sounds like thomas--woW THAT REALLY LOOKS LIKE THOM-ah”)
So cool to see how far things have come while also learning about flywheels
Thanks for the video! I did a single-mass flywheel conversion on my first BMW, a 1991 318i cabrio, and it was absolutely worth doing. For that conversion I used factory parts, specifically a single-mass unit from a 325i of similar vintage (E30 chassis). The power increase was immediately noticeable and I suppose I lucked out as there was nary an increase in noise or vibration. I'm looking forward to upgrading my flywheel to a lightweight unit when the clutch in my 2002 325i finally gives up the ghost.
I’ve talked to Rob before about my e34 m5, great guy and knowledgeable.
Thanks! This is exactly the kind of info I was looking for. Surprised how hard it is to find!
Damn crazy how much they've changed!
Flywheel chatter has always been the one thing keeping me from upgrading my flywheel in my genesis coupe. However that noise didn't seem near as bad as people make it seem
+Cole Hoover It can get bad sometimes.
Cole Hoover dude it’s not that bad my rx7 sa22c has basically nill for sound denting it’s not that bad
All depends on the vehicle and how much wear the car has on the drivetrain such as crankshaft bearings and if the gearbox is tight/loose. Ive seen some HORRIFIC sounds, vibrations and chatter.
In my e39 six cylinder with lightweight singlemass flywheel there is very noticeable annoying rattle between 1300-1800rpm in every gear and also when gear oil warms up it rattles in idle too. Lightweight flywheel is nice otherwise but my most daily driving is city driving so in my use I can hear the annoying flywheel chatter in every trafficlights I’m standing on and every time I accelerate or driving uphill, I don’t even want to drive my car anymore because of that noise😃 I need to change dualmass back and see how much power it can handle(my car is with m52 turbo engine, 54/60mm turbo)
It’s so strange, I’ve only recently started watching your guy’s videos (car reviews) and seeing just you is odd! Good sht guys
Funny you mentioned the 9-3 you own! I have a 2007 9-3 2.8 v6 and am looking to get a smf over the 36-39lb dual mass flywheel. I do agree it takes a minute to drop in revs, and a little more throttle to down shift the gears correctly.
just found your channel after putting my 2003 e46 330ci on the road. looking forward to watching the rest of your videos and learning about them
+Clutch N' Stuff..thanks for subscribing!
This is a really interesting mod! The clutch on my E39 is almost shot so will have to replace it soon anyway and this sounds like a great mod to do at the same time. I've always felt the engine is slow to rev up and the revs hang too much making smooth shifts difficult.
Flywheels have a purpose and a specific design range bases on the engine, configuration and number of cylinders. If you step out of the design range the gains are completely erased by the losses. Many times the seemingly faster reving is offsett by undesirable rev drop. The reduced momentum of a light weight makes the drive harsh, increases harmonic vibrations and impact spikes, resulting on reduced life of the drive line.
@6:10 ... 3rd gear nearly rips his head off 😂
🤣
Love your videos, man. You have a special knack for captivating your audience! I have a silver e46 328i and love it!
I went back to dual mass and couldnt be happier.The vibration,chatter toward transmission and dryness was just horrible. Performance wise its absolutely same.i measured it with dragy
I just ordered a lightweight flywheel in a friend’s focus. Her clutch was blown out. A stock ford flywheel was 600 dollars(which is cast iron) . I found an aluminum flywheel for 400 dollars shipped. I’m also putting in a Sachs clutch (from the ford clutch which was in it) I’m excited to see how she drives like after it’s put back together
How did it drive afterwards
@@naratouzumaki -great
Watching this video made me really excited for mine to be installed
I like this guy. Pretty chill demeanor.
Iiit's tiiime! Fighting out of the Rev corner, Moootorwerks! Ladies and gentlemen, presenting the reigning, defending UUC Light flywheel champion of the World...
bwahahah
When i had one in my fwd car what i notice that was annoying was that in slow maneuvers and stop and go traffic the car can start bucking. People think u dont know how to drive, lol. Otherwise i loved it. Im looking at this again for my current car to possibly help with the ridiculous rev hange between shifts. Especially one to two. But I'm worried because this car is all-wheel drive.
Very very great video.My clutch blew out on my 2015 mustang gt and debating on lighted flywheel but now I can decide on my own thx to this video
Props to you from a decade long SAAB owner. Current: 1995-900, 2001 9-5 Aero.
Am sold i love the idea of having that diesel sound on my 04 TL straight piped very informative video
So much stuff with my car makes sense I just picked up a single mass flywheel converted BMW
so it was worn oot huh?
4:12 a BMW driver that uses his indicator! Hell must've frozen over
kiwirider&carnut lol I was on a BMW CCA tour and at a left turn, 15 out of 16 of us actually used our signals, go figure!
Great video. It had direct impact on events with my car. As soon as DMF in my Octavia VRS 2.0 TSI 6M (APR1 with 235kW & 516Nm) started to slip in 5th gear from 2.000rpm then in 4th then in 3rd, mostly at the torque peak, I knew it has to be replaced. Now there is light SMF in it. Difference? Huge & positive. It is like I have totally different car: engine is more responsive, acceleration is better, throttle reaction inertia, which existed with DMF, disappeared, shifting is faster... It fells as if the car should have been fitted with SMF from the beginning, unveiling its full performance potential. Would I do it again with 40.000km on SMF? Definitely.
honestly the flywheel chatter is not as bad as what people make em seem to be. you hardly hear it unless your driving around in a in silence with a stock exhaust
I used to use a lightweight flywheel for a while, at low speed( 0-100 kph), yes it's faster than standard flywheel and more fun to drive
but.....at high speed it become a really slower than a standard flywheel, and fuel comsumption is higher from standard flywheel
because you have to hit more throttle for get a car to run at the same speed as standard flywheel
and top speed, when i using standard flywheel, my car hits 205 KPH with no problem
but after repleced a lightweight flywheel, it became a dead at 180 KPH >_> (with acceleration from 140-180 KPH like eternity)
now, i stick with a standard flywheel.
just sharing my experience, good video by the way :)
p.s/ sorry for my english.
make sense and is true. is good to have a flywheel to climb and probably city. forget the high way. oh i almost forgot, sounds good but with less pops :)
@@black.iczelion I know about the physics, and every physics has to test in real life and i told the true experience in real life, you said that because you haven't test them at top speed yet....go to test and see it for yourself.
I was almost convinced by UUC "science", then I saw the review where the guy blew their clutch package trying to do a burnout, it was proclaimed defective so he tried again, and a new one blew again immediately.
Sounds like that dude doesn't know how to do burnouts
Dont forget 550.00 for flywheel plus clutch 150.00. 700.00 in parts. Thats if you have a flywheel that takes stock clutch pressure plate. ECS uses the stock pressure plate. No custom clutch required. The one I purchased was for my Z4 2004. Freed up power in having to move less mass to the wheels. Like gaining 75 more hp.
Awesome review. Can’t wait to get mine installed 😁
Omg, My E46 320Ci sounds like this at Idle. I might have a Lightweight flywheel without knowing it, installed by a previous owner ! Considering the fact that the car really stands up in speed without pushing the throttle makes me convinced I got one...
Damn...
6 years later running into a smoked clutch and this piece is just incinerated inside my trans. Enjoy ultimate driving experience*
Just did a ground up restoration on my M3 put in a lightweight flywheel and like you first time dropping tranny boy that was fun rebuilt rear end also even more fun , but I was about to drop my tranny because I thought the flywheel chatter was I installed the pilot bearing wrong or the throw out thanks to your video I know now it's just lightweight flywheel chatter thankyou so much and yeah night and day difference from duel mass flywheel
heavy fly wheels are nice for daily driving ...stock like enginier create it 👌👌
People ask why I would want to switch to the lightweight flywheel. Honestly the main reason is that the lightweight flywheel with a new clutch and complete install kit for cheaper than the price of a new dual mass flywheel(dmf). Also because the dmf cant be resurfaced, but the aftermarket flywheel has a replaceable friction plate.
Good video mate
Just replaced the clutch on my Impreza
And fitted a lighter flywheel but havnt drove it yet as fitting wheel bearing but so looking forward
Hopefully next couple of days
Great video bro, funniest 10 mins and great educational experience
I know you’re me hotshot with cars now but I appreciate you keeping this content for us🙏🏽🥹
If your vehicle comes with a dual mass flywheel, it's generally not advisable to switch to a single mass steel flywheel, much less a lightweight flywheel UNLESS you spend more time on the track than on the street. The dual mass flywheel is there to protect your engine and transmission from excessive vibration at low RPM. Not a problem for purpose built road course cars that spend most of their time at high RPM, because there is enough rotational inertia there in a light flywheel to do the job at high rpm. At idle, there isn't. You'll notice increased gear train rattle, rumbling at idle in neutral, etc. and that noise is the result of torsional vibration in your crankshaft. No bueno for a road car sitting in traffic all the time. You can combat this a little bit with an upgraded damper pulley, but there is absolutely a reason your car came with a DMF - it is a critical component for absorbing torsional vibration that the engineers worked in as part of the engine balance "big picture" for your particular engine.
Ask early Coyote tuners who were shattering oil pump gears and snapping timing chains with solid flywheels at the drag strip in that initial hit off the line. You have to be able to deal with those pulses of energy being hammered into the crank with each combustion stroke.
Like everything, it's a trade off and you can certainly do whatever you want to your car, but this is the point where you begin to blur the line between street car and track car. Driving a track car on the street where it doesn't belong will damage components, just like driving a street car on the track too hard will damage things like dual mass flywheels.
Light flywheels on street cars is generally pointless and tends to shorten the life of your engine and trans components. If you want a track car, build a track car that lives on the track. What kills dual mass flywheels is dumping the clutch for hole shots, and manuals are generally no good for drag racing anyway.
Modern manual equipped drivetrains with DMFs are really only ever good at being street cars. It takes a lot of due diligence and know how to keep them happy and reliable on street applications converted to a solid flywheel.
This is a well written counter argument
Thank you for this comment
I don't want to discourage anyone from modifying and enjoying their car. Some engines are inherently well balanced (I6, flat 6 etc.) and you may be able to get away with a lightened, solid flywheel on the street, but I would talk to a performance builder or engineering shop that knows about your particular drivetrain before you take the plunge.
I decided, after completely murdering two dual mass flywheels in my 3.6LFX Camaro that I had reached the limits of the drivetrain and that it was time to just leave it be as a street car, not abuse it, and be happy with it. I'll buy something older and simpler to chase lower pass times. That V6 is coarse and ill refined, the timing system is somewhat weak, and I don't think it's a good candidate for a solid flywheel. I just have to be careful about how hard I shock the clutch on hole shots.
Excellent video man thanks very informative and I think your right i was looking to buy a single mass to convert from duel mass for my 520 diesel E60 and I think the trade off sound well worth it because I just fitted an lsd and I need to replace the flywheel !!
“I like you talk as you can see… I’m gonna stop now” 😂
Great review, well done sir! I’m going aluminum..
Should have mentioned what weight your flywheel was for some more context
New flywheel is probably 20-25lbs vs stock dmf at 30-40lbs. Huge difference
@@CounterfeitMcCoy should be more in the 12-13lb range. I have an e36 m3 s50 swapped e30 and just installed an 9lb fly . I believe the uuc is slightly heavier than my jbr fly
@@CounterfeitMcCoy actually its lighter, the uuc fly is 8.5lbs
@@andrewtanner5303 I stand corrected. And dang that is light. How does the car feel with that installed?
Great vid! very watchable! keep up the good work
Oh man you’ve come so far. 😂. Good job on all the explanations.
I was researching lightweight flywheels and I thought this dude looks and sounds like the Throttle House guy, is he trying to imitate him? Then minimized the video and had my answer 😅
My E36 M3 shifts as fast as what you showed on your screen and is crazy fast. While you covered the pluses of the lightweight but ignored all the negatives. No longer enjoy the vibration free BMW famous silky smoothness at park state and first gear take off. The dual mass also cancels out frequencies to add to the quiet feel. My car is obscene fast as is, but if I wanted to add horsepower, I would not do it at the expense of what I listed. There are other ways, M50 intake, bolt on Turbo etc. The diesel sound would also completely turn me off.
Thanks. You made my decision easier.
Got a single mass flywheel + sprung clutch from PTB Racing on my E46 330Ci 6-Speed. I really wouldn't recommend it unless it is used as a track tool. The noise at idle I don't really care about. But at lower speeds (anything under 60kmh) you get A LOT of noise. And I really mean it. It's really loud if you give it too much gas. Maybe the 5-Speed can take it better.
Should add a Sprint Throttle booster to it. Really noticed a difference in throttle response when I added it to my 330Ci
Ill be doing a custom software tune. Which will change the throttle mapping anyway and give a similar feel.
can't wait to see how that works +E46 Reviews with T.H.
You should do a review on underdrive pulleys.
That video will be released hopefully this spring. I'll be looking into ordering the pulleys soonish. I'll be doing a full DIY and review. Thanks for your subscription. Share the channel with all your e46 friends!
Why does upgrading from a dual mass to a single mass have chatter? Cars for decades only had single mass flywheels without any chatter.
Really want one in my E90. I want to set it up for revs and throttle response.
I think Super Street did dyno tests comparing the two on a turbo 4cyl....8hp/8ftlbs difference iirc
So the gears and everything in a car should be the same as a motorcycle scooter because I believe a motorcycle scooter is in between a car and a bike so that lease to be saying do you think I should get a fly wheel lightener for my bike or no ?
8:37 "and then i get to tell them all about it, and that's what i like to do is talk as you can see i'm gonna stop now" Not only is that literally me, but I'm also in the market for an e46 and will most likely do a lightweight flywheel mod to it.
I've got a Turbo E34 535i, and I guess my stock flywheel weighs 30 pounds, and JB racing has one that weighs 11 pounds... do you think I should get it?
Try and find an ordinary E28
535i flywheel.Older 533i/733i
flywheels are a little lighter but
not really desirable for ur turbo
build and often harder to find
and a little more expensive.A
single mass flywheel also give
you better clutch options to
handle all that torque.You dont
have to spend that much on a
aftermarket kit...just do a swap
with first oem flywheel you find
and put good pressure plate and
disc.Plenty threads about it.
Some cars have a lot more chatter and vibrations with smf. Inline 4`s are much worse for gear lash and vibrations with smf over your inline 6.
So are DMF's. Oh no, wait, that is simply because modern DMF's are not designed to last more than 120k km (or 80k miles). That being said, I removed my DMF on my E46 320Ci at 270k km, which had relatively little play in it. Probably the last ones that were good quality.
Now im a bit scared. My car has a supercharged m50b25tu with a 4.1 differential. If I install my UUC lightweight and organic clutch combo I might need a new longer ratio diff. Thanks for all the info!
you running a hyde motosports kit?
Only really run a 4.1 in a drift car
Thanks
I bought my NC2 Miata used, and it sounds just like this on idle. It does remind me of a "diesel" engine sound for a second, but it is not as loud. This is the fastest revving NC I have ever driven, and now I wonder if the only previous owner installed a lightened flywheel. I was wondering if he had tuned it or something. I will get a lightened fly wheel when the clutch goes. Then i will know if the previous owner did this mod or not. In the meantime, a set of light wheels will make things better.
Update: The clutch went, and I replaced it with the clutch, pressure plate, and 8.4lb Flywheel Flyin' Miata Happy meal. I also changed the clutch master, slave, and a braided clutch line. It is an amazing improvement, but you need to use a little more gas in 1st gear. I do have a little tranny chatter on deacceleration, but it doesn't bother me at all.
@@vlenhoff i also have an NC! Just finished my install of a fidanza 7.8 pounder. I love it and it really woke up the car. Mine does sound diesel-y but it's fantastic
@@adamwest519 Yeah I looked into the Fidanza as well. Yeah you get the "diesel-y" idle sound, but meh, the car is more fun. Enjoy Adam!
Thanks man, I just learned that my e46 M3 probably already has a light flywheel cos it has similar characteristics
Great video bro!!👍🏽👍🏽
What was the weight of the old flywheel & new flywheel?
awesome, thanks
You have a great sense of humor 😂😂
I know this is old but I installed a bigger flywheel in my ford ranger manual 97’ from my lighter stock fly wheel and got way more acceleration and power. I’m just saying.
Is this the M54 motor? Did you do anything to the oil pump ?
Hi Throttle House, do you notice any lose of torque at good speed (rolling start ) in cause of less inertia of the flywheel ? Or a difficulty in uphill or to reach max speed ? I'm going to change my flywheel and clutch on my 6spd 330i e46 and i hesitate between sachs/valeo single mass conversion kit or uuc kit... I'm suscribe ;)
It takes more revs to pull away. I prefer it overall though. Def go single mass either way. UUC is the more extreme option I would say. But I like it.
I used to use a lightweight flywheel for a while, at low speed( 0-100 kph), yes it's faster than standard flywheel and more fun to drive but.....at high speed it become a really slower than a standard flywheel, and fuel comsumption is higher from standard flywheel because you have to hit more throttle for get a car to run at the same speed as standard flywheel and top speed, when i using standard flywheel, my car hits 205 KPH with no problem but after repleced a lightweight flywheel, it became a dead at 180 KPH >_> (with acceleration from 140-180 KPH like eternity) now, i stick with a standard flywheel. just sharing my experience, good video by the way :) p.s/ sorry for my english.
Lovely video! I'm doing a manual conversion in my e39 530i, and this was very helpful. Regarding gear rattle, have you tried the UUC transmission "cocktail" of fluids? Any better? Did you go for the e34 M5 PP/clutch, or the UUC organic?
Thanks for the feedback! I have the organic clutch. I like it so far. I'm still in the break in period though. It really does grab! I would recommend a cdv delete (check out my video) That made it easier to pull away smoothly. Also no I havn't tried the UUC recommended fluids. I might give it a go next fluid change. Subscribe to see more updates on this clutch and flywheel later on.
i've read on the forums people talk about cars with lightweight flywheels struggle up heel... whats your experience?
The car itself Does not struggle at all uphill. In fact it has more power available so it's easier. If you mean "starting" on a hill then yes. It is more challenging to slip the clutch and get rolling up a hill as it requires more revs.
excuse my spelling by the way auto correct loves messing with me, i see what you mean, that could be a problem for me as here is alot of uphills where i stay might wana rethink this whole thing
Yea I could see how it might get annoying. It's all a matter of whether or not you are serious about performance mods. There are usually some sacrifices that need to be made for that smile factor when it counts.
You can't be owning a BMW if you are using a blinker. Everyone knows BMW drivers done know what that does. It's only a myth to them
All BMW drivers use their blinkers. It's just that BMWs emit a light that poor people can't see. /s
Your watch looks like it has martini logo straps. Just wondered what watch it is?
Fantastic video BTW.
It’s a Certina ds action diver. Thanks for noticing!
If you have an automatic, then the clutch control related disadvantages go away ?
I'll hold off on that mod.
So if I buy an after market clutch would it work better or more efficiently with a lightweight flywheel or would an oem be just as fine? Does it even make a difference in that aspect? A daily driver don’t ever intend on taking it to the track or anything only got a stage 1 excedy clutch for my 8th gen si
Does this lighten clutch pedal at all long term 🤔 great vid
akeel mukhtar typically only the pressure plate or clutch master/slave cylinder will make a difference in pedal feel.
For your information, my car has similar power as yours. The dyno has shown 5% power increase in 5th gear. I have front wheel drive, no chatter noise at all
Would the clutch feel different WITH the clutch delay valve, versus without?
mydejavooo Clutch destroy valve
I just ordered an aluminum flywheel 12lbs to replace the 36lbs dual mass which is broken at this time but man your flywheel in this video seems slow idk, like slower than my dual mass :)
The reason that shifting feels quicker after your rebuild is because the chlutch delay valve delite. Not the flywheel! Biggest reason for light weight flywheels are to save total car weight on a race car. Not on a street car.
Greetings from the UK :-) E46 325i sport. Age old question..... is a remap worth it?
My new lightweight flywheel seems to be throwing a check engine light for misfires... is this possible and should I just bite the bullet and put a NEW steel flywheel on and take my NEW aluminum flywheel off and throw it at McLeod for not telling me this could happen... seems to be no solution I can find. I have a 17 mustang gt and bought the McLeod RXT clutch with aluminum flywheel.
5:35 nice
You're a better host than that squeeky guy on Top Gear.
Chris Evans? or Richard Hammond?... because when one of them is squeaky, its endearing, when the other is, it's annoying ... hahaha
haha.. Chris Evans.
The Hampster is busy with the "no named show".
so can you straight swop from dual mass to single mass? or are there any extra things you must add? just wondering because i have to do clutch and flywheel in the next 1000km
You can straight swap yes. Make sure you get a non self adjusting pressure plate kit.
hell of a lot harder to take off without stalling
Is the car you driving in the video for track use and daily use?
My car has a Single Mass flywheel. Is the difference still the same? I mean it Drops 60-70% of the weight
is there a single mass flywheel (also lightened) that you can install in your e46 and has absolutely no chatter noise?
Vlad ZSX oh gawd I wish. The chatter off a single mass flywheel is annoying!
Thing is everyone focuses so much on the flywheel, but you have to consider mass of entire rotating assembly too. Someone will install let's say 18lb flywheel instead ("still lighter than stock by 6lb yo!") but then install heavy E34 M5 clutch so now entire rotating assembly is heavier than stock E46 DMF and self adjusting clutch.