[onefireball]

has anybody used this combination? Really want the SMFW for later upgrades...Really don't want a LOT of gearbox rattle.
Was thinking about the Mfactory flywheel and either the spec 2+ or 335is,
Thanks

[Jeff@TopGearSolutions]

If you don't want flywheel chatter don't get a SMFW. If you plan on going over 500WHP/TQ then you'll need it.

Honestly, if you are going to upgrade the clutch, I understand the 335is is a cheaper clutch but I doubt it has the holding capacity of a Spec stage 2+. If you are already talking about needing a SMFW it sounds like you'll need the torque capacity of an aftermarket clutch.

Figure out your power goals first and then pick up a clutch based on that.

[onefireball]

FBO with meth now...figured when the turbos need to be replaced that I would be over the recommended power for the DMFW as I at least plan on upgraded twins or single kit

[Scottycs]

I'm running a spec Aluminum flywheel with the 335is clutch. Running the UUC oil combo and there is rattle when the trans is hot. Though under normal driving it stays pretty quiet.

[Jeff@TopGearSolutions]

Originally Posted by onefireball

FBO with meth now...figured when the turbos need to be replaced that I would be over the recommended power for the DMFW as I at least plan on upgraded twins or single kit

Well I'll tell you one thing, the stock DMFW will eventually fall apart, literally.

So if you want to try to keep it you should at least get one new. The 500WHP figure is conservative. The real problem is as they age they become imbalanced so there is no exacct power figure that deems them no good.

A fresh DMFW can likely go a little past 500WHP, where exactly nobody knows as everyones car is different.

What I'm trying to say is there is a slight chance a new DMFW could be fine at the power level of RB's.

But if you are going to single I'm pretty certain you'll need to go SMFW for sure and at the singles power level I'd sway heavily towards getting an aftermarket clutch that can hold the power.

Originally Posted by Scottycs

I'm running a spec Aluminum flywheel with the 335is clutch. Running the UUC oil combo and there is rattle when the trans is hot. Though under normal driving it stays pretty quiet.

The steel would make a little less noise for future reference.

[onefireball]

I was hoping for a good twin plate option eventually. Heard many issues with the spec setup. Wondering when the Mfactory twin plate will get released

[abhishriv]

im in the same boat and thought i would share what i have found through my research.

If you want to go with a traditional single disk clutch setup. you may want to consider "bully clutch". ive talked to a few ppl running them on other platforms and on track cars and they say that these clutches perform! The one i was looking at was the stage 4 ceramic with their aluminum flywheel. They said that ther "buttons" on their clutch help with slipping the clutch in as opposed to other ceramics, so it gives you more practicality for daily while being able to be pusnished on track and with higher tq and hp of our modded cars. that being said you probably will still need to get used to this type of clutch compard to stock. the price on these is very good too. so might be worth checking out. cheaper than SPEC.

the other option that might interest you is the motiv twin disk, twin disks will hold a lot of power (900 ft/lbs) and are slippable so it will be easier to drive daily. only downside is the price for these. although the motiv one is cheaper than the one from clutch masters.

lastly, word has it that Comp Clutch is coming out with a twin disk as well for the e9x 335i (maybe within the next couple months), which will use 2 organic disks as opposed to ceramic disks. which allows them to be even better for daily but will still hold about 650ft/lbs.

i was really close to ordering the bully clutch because the price difference between that and the motiv twin was about $900 CAD (canadian conversion sucks right now). im expecting the Comp to be somewhere in the middle of those two and want to wait to see what they come out with.

[onefireball]

Thanks for the input.

I did consider the Motiv and was prepared to pay for it, however I read A LOT
of people having issues with it. There is a huge thread on ***********.

So I have ordered a new DMFW and 335is clutch for the time being.

Stock drivability and slightly better torque capacity.

If a reliable, drivable twin comes to market I am on board and will have to pay again, If the Is clutch wont hold the power I will get something else that will work with the DMFW.

Bad timing I guess, since the Platform is improving, but still not many great option for a clutch.

[abhishriv]

Originally Posted by onefireball

Thanks for the input.

I did consider the Motiv and was prepared to pay for it, however I read A LOT
of people having issues with it. There is a huge thread on ***********.

So I have ordered a new DMFW and 335is clutch for the time being.

Stock drivability and slightly better torque capacity.

If a reliable, drivable twin comes to market I am on board and will have to pay again, If the Is clutch wont hold the power I will get something else that will work with the DMFW.

Bad timing I guess, since the Platform is improving, but still not many great option for a clutch.

let me know how that setup works out in holding the torque on modded cars. i think it might be the same route i go if this twin setup from Comp Clutch doesnt work out. its funny because i started looking into clutches because i knew mine would go out soon, but yesterday on the highway i got slip in 5th and 6th .. sigh

[Jeff@TopGearSolutions]

This was sent to me just two days ago by a customer looking for a good clutch kit that holds the power and similar to stock. I don't believe hes a big forum go'er but figured it was worth posting his testimonial as I think people are selling the Spec 2+ short.

I just wanted to let you know that I love the Spec 2+ Clutch kit that you sold me, and I appreciate the fast shipping and fast response via e-mail. I will be recommending your company to other people and I can't wait to be doing business with you in the future. I was curious about the break in period on this clutch. How many miles should I drive the car before I really open her up?

Thanks!
P

[onefireball]

I don't doubt the spec 2+ will hold the power, but at my age nvh is also a concern which is why I chose the Is clutch. Might be a mistake, only time will tell

[Myrder]

Nobody has fully tested the 335is clutch, but its held up in JB tuned 550i's which make over 500rwtq and weigh 4300lbs.

[C.Pop]

I've been on the 335is/550i clutch and a SMFW for about 6000 miles, at/above 550 wtq for over the last 3000 miles with VTT 2+'s no issues.

[serotoninsteve]

Do you get any drone in lower rpms (from idle upwards) when accelerating in 2th or 3th gear, daily driving?

I ask as it's a complete undampened setup.

How does it feel in terms of mushiness in the drivetrain vs a DMFW?
Does the drivetrain response become more direct on throttle input?

Thanks

Originally Posted by C.Pop

I've been on the 335is/550i clutch and a SMFW for about 6000 miles, at/above 550 wtq for over the last 3000 miles with VTT 2+'s no issues.

[C.Pop]

Originally Posted by serotoninsteve

Do you get any drone in lower rpms (from idle upwards) when accelerating in 2th or 3th gear, daily driving?

I ask as it's a complete undampened setup.

How does it feel in terms of mushiness in the drivetrain vs a DMFW?
Does the drivetrain response become more direct on throttle input?

Thanks

1: Yes, quite a bit of resonance, not so much in 2nd as low rpm 3-4-5-6. Keep in mind I added significantly stiffer transmission mounts so some of that could be the mounts & cups.

2: Feels a LOT more direct. It feels like quite a bit better throttle response.

[Scottycs]

6th gear at 2k rpm makes a horrible drone. Other than that everything is good.

[Jeff@TopGearSolutions]

Originally Posted by onefireball

I don't doubt the spec 2+ will hold the power, but at my age nvh is also a concern which is why I chose the Is clutch. Might be a mistake, only time will tell

There shouldn't be any NVH on the 2+ with the DMFW. It will pretty much drive like stock with a slightly stiffer pedal feel.

[serotoninsteve]

Thanks for the clarifications.

I'm thinking on getting a SMFW but with a dampened clutch.
The mushy DMFW takes away quite a bit from the drivelines sportiness.

Originally Posted by C.Pop

1: Yes, quite a bit of resonance, not so much in 2nd as low rpm 3-4-5-6. Keep in mind I added significantly stiffer transmission mounts so some of that could be the mounts & cups.

2: Feels a LOT more direct. It feels like quite a bit better throttle response.

[serotoninsteve]

What setup do you run?
Ups, saw you posted already your setup!

Originally Posted by Scottycs

6th gear at 2k rpm makes a horrible drone. Other than that everything is good.

[NA55]

Originally Posted by C.Pop

I've been on the 335is/550i clutch and a SMFW for about 6000 miles, at/above 550 wtq for over the last 3000 miles with VTT 2+'s no issues.

Do you ever launch your car on drag radials or slicks? Just curious about how much abuse you put the clutch through..

[C.Pop]

Update: 335is/550i clutch is starting to slip with about 20k on it. Depending on temps and tune between 550-600 wtq for the largest percentage of those miles. I drove aggressive but not many launches and nothing on drag radials, I don't think the clutch would handle that well at all. Lots of 2-3 WOT pulls and many, MANY 3rd gear logs from 2500-7200 rpm. It's a good value in a clutch but probably not for hugely upgraded turbos like the 2+'s. FBO stock turbo unless you do torque bomb tuning it should be an awesome and cheap upgrade. Just updating my results.

[335NJ]

Originally Posted by C.Pop

Update: 335is/550i clutch is starting to slip with about 20k on it. Depending on temps and tune between 550-600 wtq for the largest percentage of those miles. I drove aggressive but not many launches and nothing on drag radials, I don't think the clutch would handle that well at all. Lots of 2-3 WOT pulls and many, MANY 3rd gear logs from 2500-7200 rpm. It's a good value in a clutch but probably not for hugely upgraded turbos like the 2+'s. FBO stock turbo unless you do torque bomb tuning it should be an awesome and cheap upgrade. Just updating my results.

Either way, 550-600Wtq is pretty damn impressive for a stock feel clutch!

Thanks for giving the feedback though so anyone expecting durability at those power levels can plan on something else. I'm going for the 335is clutch myself very soon I hope. What flywheel are you using with it? I know it's a SMFW, but is it the steel one or aluminum?