My SB clutch problems

[CO AVANT]

Got off the phone with Southbend yesterday and they said they will resurface my fly, replace the clutch disk, and increase the clamping load on my pressure plate. "All for a good price" Such BS. They should be doing all this shit for free if they advertise that clutch to hold 500lbs+ ctq. They said I must be making more power than that to be slipping it on the hwy like I did before it welded together at the track after only 2 great launches (3000miles on it). But whatever, it is what it is now. Just need to drop the tranny AGAIN and pull it out. Been pondering a twin plate setup but I really want to drive one first before I pull that trigger. Don't like on/off clutches like puck clutches. Low on funds so I will prolly just put the FE back in after Southbend fixes it. I'm wondering if the surfaces would have welded together if I had the stock dual mass in there... (even though it's steel faced too).

[F16HTON]

Yes, because like I had told you it happened to my clutch (with a OEM dual mass) and Charlie's with a lightweight Alu flywheel.

I am not putting down the Southbend Product, it is just not capable of holding the torque we make and the grip of the AWD drivetrain.

[CO AVANT]

Oh I thought it was just Charlies that did it, not yours too! Must not have been listening fully seeing as I was pissed at my car at the time lol

Would a different material on the disc face help? Something that is not iron like carbon?

[F16HTON]

I truly cannot answer that. I am switching to a Clutchmasters twin plate, I will report on how it works once it is installed.

[CO AVANT]

When is this going to happen? I might just wait and let you be the guinea pig Does twin plate feel like a puck disc or different? I want to jump on that setup just don't want to be disappointed with noise or driveability...

[MikTip]

Perhaps the S4, 240mm clutch may be something to consider?

[Papachristou]

you dont think you are in the 450 - 500 in HP/torque?

[dirtybrd]

Do you have the metal disc on both sides? I have the ferrous (sp) disc on both sides and the only way I ever got mine to slip is a 2nd gear launch.

[CO AVANT]

you dont think you are in the 450 - 500 in HP/torque?

Oh I have no doubts that I'm at 450-500 crank torque. The clutch is listed on their site at 576lb ft tq rating.

Chris, I have feramic on both sides.

[dirtybrd]

Hmmmm.

[CO AVANT]

yeah that's what I said...

[dirtybrd]

That Spec twin plate is a nice looking unit. They can be set for street, road race and drag from what they're saying. The rotating mass is so much better, that thing would rev like mad!!!!!!!! What are they prices at? Do you think they'd chatter at idle?

[AudiA4_20T]

I truly cannot answer that. I am switching to a Clutchmasters twin plate, I will report on how it works once it is installed.

let us know how it goes, it seems like this may be the end for southbend

[CO AVANT]

Greg and I are most likely going to go with the 6 series (organic/kevlar) clutch masters twin plate setup. I think the twin plates chatter only when you press in (engage)the clutch. They come as a complete fly/clutch package... and yes, that rotating mass is soooo much better. That thing looks small in diameter compared to what we are running now. The whole clutch/fly twin plate combo is lighter than the oem dm fly by itself.

[dirtybrd]

I had one that I was going to install in my 70 Nova. I never did, but it was sweet.

[LampyB]

i would have thrown a fit if they just offered to give me a good price instead of a replacement. oh well, just make sure you know the price before ordering otherwise they may pull some 10% off BS.

i see you do installs in your sig, i'll hit you up in the future for some help! in a few months i'll hopefully be doing an exhaust install.

[mtbrider]

let us know how it goes, it seems like this may be the end for southbend

Big second, I need to swap out my clutch soon anyways.

[mtbrider]

Greg I sent you a PM

[Condo]

Does anyone have a link/pricing for the clutchmasters twin plate setup?

[F16HTON]

I do, PM or call me at 916-705-0897

[Don Supreme]

Oh I have no doubts that I'm at 450-500 crank torque. The clutch is listed on their site at 576lb ft tq rating.

Chris, I have feramic on both sides.

WHAT??? You think you are making 500 pounds of torque with a 2871 on a cammed 2.0?

That's super duper optimistic don't you think?

[F16HTON]

Don, on the full GT28RS I made 334AWHP along with 356AWTQ on the dynojet back in 2004 when the REVO tuning was still rough, once it was ironed out I made 310AWHP and 340AWTQ.

This equates to the 450-475 pound range as shown on the dyno, but I would bet my ass that is greater on the street on a momentary basis.

My reasoning for this is that the torque made with a forced induction car is directly proportional to the amount of load placed on the motor, our cars are heavy as fuck, have quite a bit of drivetrain to overcome and the quattro drivetrain sticks to the asphalt pretty damn good.

The bottom line here is that Jordan's clutch fucked up on him, this is a fact, I was there, side by side with him as it happened (him and I were racing on the track), drove the car to see the aftermath (with the clutch frozen) and I also cooridinated a lift for us to drop his tranny and temporarily repair it.

Maybe his car was making 500 pounds of torque, maybe it was not...hell maybe the Southbend clutches are not truly rated at 576 pounds and it is a number they pulled out of their ass (cause if Jordans B6 cannot make 500 pounds, then who the fucks can?).

By no means am I putting down the Southbend product but you need to remember that all it is is a Sachs Superset clutch that has a modified pivot point change along with a modifided clutch disk, then it is painted red.

[Papachristou]

cheap red paint too BTW... shit flaked right off mine

[mike-2ptzero]

When is this going to happen? I might just wait and let you be the guinea pig Does twin plate feel like a puck disc or different? I want to jump on that setup just don't want to be disappointed with noise or driveability...

The EVO8 I drove at Fontana for an event last week had a triple plate carbon Exedy clutch, it felt no different then a normal clutch setup. It would grab around 3-4 inches from the floor and I had no problems launching or shifting quickly thru the gears during the 3 runs I made with it. Now if you would have showed up you would have heard how it only chatters when you press the clutch in and how easy it is to drive. BTW this EVO is daily driven every day by the owner which is older then I am.


If I would have known your clutch was going to fail while we were in Norcal I would have brought my extra 4800 lbs dual diphram pressure plate, but then your slave cylinder might have just ended up exploding.

[dirtybrd]

So the multiple disc clutches don't have the transmission gear chatter at idle like our cars do if you run a solid FW, and only chatter when pushed in, due to the multiple I assume.

[mike-2ptzero]

So the multiple disc clutches don't have the transmission gear chatter at idle like our cars do if you run a solid FW, and only chatter when pushed in, due to the multiple I assume.

Correct, they only chatter when you push the pedal down which removes the pressure on the 4 floating disks/plates.

[CO AVANT]

I would have been there if I wasn't repairing shit the whole trip Mike Good to know that clutch setup is street friendly. I think I'm gonna jump on it.

Don, Greg said pretty much what I would say. And yes, I do believe my car makes 450-500 ctq in OPTIMAL CONDITIONS. I know how my car runs at sea level on the hwy with 114 leaded race gas in 70deg temps. Shit this is the same setup as another guy in socal that put down ~400whp. Prolly a dynojet # but I honestly don't know. I have no doubts I would have put down 360whp+ on the mustang if the conditions were somewhat optimal. Too bad on my 6th pull in 102deg in room temps with 65deg IAT's while misfiring, slipping the clutch, and sucking in exhaust fumes into my engine instead of 02 from no ventalation I was still able to put down 328whp. I have never seen my car run worse in my life, but once I got back in real world conditions it came alive again and IAT's were cut in half instantly. Fueling is my limitation now anyway as when it got down to 70deg at sea level I started to run lean.

[Don Supreme]

What size injectors and what fuel pump?

[CO AVANT]

550's and stock pump. yeah, I know... Might go 630's and Bosch pump in the future but I am not maxing out fueling up here, so not worried unless I go back down to sea level sometime in the future...

[dirtybrd]

Correct, they only chatter when you push the pedal down which removes the pressure on the 4 floating disks/plates.

I our cars or just the Evo? That would make it worth it right there. I'm sure while I'm sitting at the back people are wondering when my cars going to throw a rod.

[mtbrider]

if I'm reading this right so these twin plates set-ups only make noise when the clutch is depressed unlike a lightweight flywheel that makes noise at idle when the clutch is not depressed?

[mike-2ptzero]

I our cars or just the Evo? That would make it worth it right there. I'm sure while I'm sitting at the back people are wondering when my cars going to throw a rod.

All cars, its just the design of the multi disk setup.

if I'm reading this right so these twin plates set-ups only make noise when the clutch is depressed unlike a lightweight flywheel that makes noise at idle when the clutch is not depressed?

Correct. If your sitting at idle with your foot off of the clutch pedal there is no noise at all like you would hear with a lwfw clutch setup on our cars now.

[dirtybrd]

That's worth the $ right there!

[F16HTON]

We may get gear chatter due to the lighter rotational mass. Clutchmasters is willing to work with us to make the perfect flywheel for the B6.

As far as they know, none of their current customers have complained yet. The gear chatter is a function of the transmission, not the clutch disks.

[dirtybrd]

Thats what I was wondering. Someone needs to develop a lightweight but strong DM FW. In a perfect world I guess!