Clutch/PP/Fly for 500whp?

[GunMetalGrey]

I know this is a pretty old thread, but it came up first in a quick search today so I figured I would add some final conclusions and what I eventually used.
I ended up with a ZF out of a late model 328 e36, and an AASCO flywheel for a 328. This is a 240mm setup and I used a SPEC Stage 2+ which is capable of around 470tq.
This setup rocks, the pedal is a little harder than stock, but the engagement is like butter and has been holding all of my power just fine!
I did not use m3 parts as they are larger in actual diameter, not friction surfaces, and are more expensive.

My friend uses a spec stage 1 m20 setup on his built s52, and while the clutch can hold a lot of power it is a bear to drive, stiff pedal, hard engagement and no fun overall to drive.

If you are torn between using a 228mm disc and a 240mm disc go for the 240mm!

[Wanganstyle]

What TOB do you run? Gt 260 with s50 clutch

TOB and pilot bearing need to match transmission. Original items usa 325i.

[GunMetalGrey]

What TOB do you run? Gt 260 with s50 clutch

[matthugie]

So long story short, an s50 flywheel and clutch will fit fine in the gt260

Yep. I have one in my car and it's great.

[Roysneon]

Wangan, I love all your posts in this subforum.

[nando]

Clutches are rated by torque holding capacity; hp curves dont have anything to do with it.

[GunMetalGrey]

So long story short, an s50 flywheel and clutch will fit fine in the gt260

[Jszy25]

Ohh okay lol. I thought it was one more than the other. My bad!

All good man. Probably one more so than the other, but I can't say for certain.

[Wanganstyle]

A dual mass would not work, it would just get ruined or be constantly slipping, unless I got one made for the power curves, and that would just be expensive. IS the s50 clutch pp and flywheel much larger or better than an m20 setup? The price on the two is plenty different. ANd have any of you guys used ebay clutch systems? I usually would stay away from those but I know that a few people on here run them. If I use the s50 clutch setup I cannot use the m20 starter correct?

Dual mass clutches work GREAT for turbo and NA high power.
Dual mass eats the shock loading at the flywheel, saves the Pressure plate springs from a decent amount of shock, allows longer transmission and driveline life/durability under high loads/shocks/torque. kill the flywheel instead of transmission.


G260 transmission gets baby size 228mm clutch natively for e30.
G260 transmission is designed to take a 240mm Clutch kit natively by Getrag; reference e32 735i.
G260 is shipped from factory with both dual mass and single mass clutch setups in both 228mm and 240mm.

240mm is bigger than 228mm. Bigger = hold more torque, more heat.

Dual mass vs single = not much difference in weight


comparing factory 240mm setups: (complete flywheel+pressure plate+friction disc). All three of these can hold ~ 370rwhp also.

e36m3 S52b32 complete dual mass setup weight = 32lbs
e24 m30b33 633csi single mass weight complete kit 29lbs.
e46 330i ZHP dual mass complete kit = 30.5 lbs


S52b32USA's complete OEM new clutch kit is good for over 370rwhp, and also fits perfect in your G260 (I DD a G260). This factory setup can be daily driven in 3rd world country traffic and wound out on the track or on Wangan. Cost is not very much either.

you can buy a turbo aftermarket Pressure plate and friction disc set to pair with the S52 dual mass flywheel.

A Brand new s52 (USA e36m3.2) dual mass LUK (germany) is under $400.
Call southbend/SPEC and ask for a 500rwhp turbo s52 clutch -both companies can deliver a DD-able 500rwhp clutch.

The Dual Mass 240mm diameter Clutch setup has been proven in e39M5 V8 5.0L application (Original from BMW).

you could also go the cheap ebay f1grpfrce route and get an entire setup for a e36M. If you pick the right one and are lucky on manufacturing tolerances it should be just fine.

[AnimalE30]

To be honest, they both have had failures, just like every other clutch manufacturer. They still have tons of happy customers though (both companies).

Ohh okay lol. I thought it was one more than the other. My bad!

[Dominic49]

I have seen one of my fullface clutches hold over 500tq with a clutchnetred plate

i have held over 350 tq with a factory m3 plate

[Jszy25]

Which company has a high clutch failure rate? I know the guys on bimmerforums FI were all moving from one of these companies to the other due to the large number of failures, but I'm not sure which one.

To be honest, they both have had failures, just like every other clutch manufacturer. They still have tons of happy customers though (both companies).

[Jszy25]

A dual mass would not work, it would just get ruined or be constantly slipping, unless I got one made for the power curves, and that would just be expensive.

I'm confused, why would it get ruined? You tell the clutch manufacturer what flywheel you are using and they build you a clutch kit for it. It works great.

[GunMetalGrey]

THanks for the info, we have the same two cars lol

[drumad]

iirc the m20 flywheel is 228mm and the m5x/s5x flywheel is 240mm

your flywheel must match your starter