E9x M3 DCT LW Flywheel group buy

[Tomas_e92m3]

Originally Posted by Makaveli7

I changed the flywheel on my dct couple of weeks ago and never knew that there was an OEM lighter option. My car is an 08 production and the difference between the OEM flywheels is a bit crazy 12.6 kg (27.78lbs) vs 8.9 kg (19.62). The shifting is smoother espacially between 2nd and 3rd and the car revs more freely. I think there is a bit of loss in torque on high end but might be placebo, if anyone can add the technical inputs it would be appreciated to make a decision if even a lighter one is really needed.

Links to Realoem since its not shown straight away in the list

https://www.realoem.com/bmw/enUS/par...;q=21212283810

https://www.realoem.com/bmw/enUS/par...;q=21217841661

Some pics where you can the plate that was removed by bmw.

Maybe this updated flywheel was introduced to the LCI E9x M3s? Good to hear you felt a difference with only a couple kgs lighter, cost per kg i think it would be worth it.

[roastbeef]

for the DCT, did i read that right?

[Redd]

Wait, so the 08-09 flywheel is lighter than the newer 09-13 flywheel?

[Tomas_e92m3]

Originally Posted by roastbeef

for the DCT, did i read that right?

Yes for dct, hoping bm shop can supply it to us in the U.S.

[roastbeef]

Originally Posted by Tomas_e92m3

Yes for dct, hoping bm shop can supply it to us in the U.S.

nice. imagine how it would feel with lightweight clutch baskets.
https://www.sspperformance.com/bmw-d...ven-2-4-6.html

[Tomas_e92m3]

Originally Posted by roastbeef

nice. imagine how it would feel with lightweight clutch baskets.
https://www.sspperformance.com/bmw-d...ven-2-4-6.html

Currently debating if i should install my Dinan ITBs, RK Tune, test pipes and e85 or do weight reduction with carbon driveshaft/lw flywheel. I feel like weight reduction will be the way to go though

[Makaveli7]

Originally Posted by Redd

Wait, so the 08-09 flywheel is lighter than the newer 09-13 flywheel?

The newer is lighter by around 3.7 kgs (~8.1 lbs)

[marcospersia]

Oem weigt 9.5kg, I am developing a fixed one of 3.7kg, it improves a lot to accelerate, it does not make any kind of noise

[SYDAUSM3E92ZCP]

Originally Posted by marcospersia

Oem weigt 9.5kg, I am developing a fixed one of 3.7kg, it improves a lot to accelerate, it does not make any kind of noise

Will this affect the torque a lot being so light? And has it been tested as of yet?

[SYDAUSM3E92ZCP]

Did anything ever come of this? Did BM shop respond?

[chocstraw]

Yeah, necroposting in this thread to see if anything ever came of this and if the engines need to be retuned or have their idle set differently to accommodate a light weight flywheel.

I know that motorsports engines have to idle higher because of less engine inertia. F1 idles at 4,000.

[Epoustouflant]

Bumping this up.

I am talking to this shop. Group buy is a possibility. Price point is interesting.

Is there still interest?

[bmwfst1]

Originally Posted by Tomas_e92m3

Maybe this updated flywheel was introduced to the LCI E9x M3s? Good to hear you felt a difference with only a couple kgs lighter, cost per kg i think it would be worth it.

So my e92 m3 is a 2010 car. Does it have the lighter flywheel.
It seems like both flywheels fit all models years.

[atopa2002]

Originally Posted by Epoustouflant

Bumping this up.

I am talking to this shop. Group buy is a possibility. Price point is interesting.

Is there still interest?

Talking about LWFW for DCT:

https://europebm.shop/collections/m3...-allege-m3-e92

And for manual:

https://europebm.shop/collections/m3...oite-mecanique

I am in

[Redd]

Originally Posted by Epoustouflant

Bumping this up.

I am talking to this shop. Group buy is a possibility. Price point is interesting.

Is there still interest?

Interested but need to know what is the effect on driveability as my car is a daily.

[Epoustouflant]

Originally Posted by Redd

Interested but need to know what is the effect on driveability as my car is a daily.

Chatter, for sure - like a bucket of bolts. Will rev up much faster, easier rev matches.

It it's a daily or a cruiser I wouldn't do it. If it's a clubsport car; it adds theatre!

991 R came with it stock, I'd highly recommend videos.

[Redd]

Thanks for the explanation. I'm out then.

[Epoustouflant]

Originally Posted by atopa2002

Talking about LWFW for DCT:

https://europebm.shop/collections/m3...-allege-m3-e92

And for manual:

https://europebm.shop/collections/m3...oite-mecanique

I am in

I'm working on it right now - I am manufacturer direct

[Scharbag]

Originally Posted by tdott

likely will clatter at idle and cause some NVH, for a racecar should be fine, but I'm never doing a ltw flywheel again on a street car unless it is confirmed to be dead quiet.

For a full out track car or if you don't care about noises, then sure you'll get a slight improvement. I'm more interested on those set of Cams in the pic. Now that is a mod I might do.

^This

Even with the DM stock E92 flyweel, I get some gear chatter at idle. I could only imagine the racket the 6MT would make with a SMLWFW.

The light weight flywheel can also make the car easier to stall due to the lower rotating mass, especially if paired with a race clutch that is really grabby.

But for a race car? Hard yes!

[Epoustouflant]

GB is a go; GB: TTV Lightweight Flywheel - MT & DCT https://www.m3post.com/forums/showthread.php?t=1756022

[GORDON.M3]

Anyone try the LW Fly wheel yet?
Any word on it??