Twin disc clutch [Merged 11-6]

[95 TsiAWD]

The most popular twin disc clutches are the Exedy which usually sells for around $1600-$1800, and the Clutch Masters which sells for about $1500-$1700.

Most DSM vendors can get their hands on either setup. I got my Exedy Twin Disc for a VERY good price from ATX Motorsports in NJ, give them a call, I hear they give Forum members a discount, ask for Chuck.

 

[94awdcoupe]

6 bolt or 7 bolt? FWD/AWD? Id consider selling my HKS twinplate for a 7 bolt AWD.

 

[gixer]

i was just woundering who all sold the twin disk clutches
for the 2nd gen gsx with the 6 bolt swap
if at all possable can you give me some links
thanks fellas

 

[alex]

Here are some links

This is a link to Exedy Clutches
(They have it in the 6 bolt for you too!)
http://www.coximport.com/auto-parts/EXEDY-TWIN.html

http://www.importperformanceparts.net/imports/cm-twindiscs.html

http://www.autocarparts.com/cars/Mitsubishi/ALL/HKS

 

[gixer]

keep they comeing fellas

 

[Lunch_Box]

I have a ACT 2900 and street disk in the car right now but am taking the tranny out because I just picked up a TRE race trans and was wondering what to do about a clutch. I don't feel like taking out the tranny to replace clutch parts half way through the year so could a ACT 2900 handle a seasons worth of abuse (mods in profile)? Right now I am thinking of selling the clutch and flywheel and going with a Devo Tuning / Quarter Matster twin disk. Anyone use this clutch? What are your thoughts?

 

[UMR98GSX]

First off I only want the pros and cons of running a twin disk clutch and NOTHING about spending my money elsewhere.

First some background (skip to bottom for the impatient)-->

I hope to be making around 400hp to the crank on pump with the mods in my profile when I get it tuned and I want the smoothest engaging lightest pedal I can get because the car is my daily driver, will only see the track a few times a year, and money is not a problem right now. Other reasons is I want to go easier on my drivetrain until I upgrade and don't want to influence crankwalk.

I spoke with a local reputable DSM shop and they first recommended an ACT 2100 with an unsprung 6 puck disk but I need it to be streetale so that ruled that out and I don't want the heavy pedal feel of a 2600. They said that they have had great success with Exedy twin disk setups in quite a few EVO's around town and that it would be a pricey but worthwhile option.

Upon doing some research I found that it has a pressure plate of less than 2200 lbs so that solves that and the shop said that it will engage almost if not exactly like stock and since no slipping is really needed that it would have a long lifespan as long as it is not abused. After some inconclusive searching and speaking to some local EVO guys I have decided to go twin disk and never look back.

The GOOD stuff-->

Here's the issue; I am not sure of which twin disk clutch to get. I am not going to spend the money on the HKS first off so that is out.

The battle is between the Exedy Twin Disk (not carbon because i do not want to deal warm up times every time I drive and I hear they glaze over easily) and the Clutch Masters FX600 Twin Disk with the organic Kevlar mix.

Cliffs Notes-->

Buying a Twin Disk clutch (Don't try to stop me), can't decide which one, and want pro's and cons to the Exedy (non carbon fiber) and Clutch Masters FX600

Thanks for all of the input guys.

Anson

 

[94awdcoupe]

I actually have the HKS twin disk but I have yet to use it. I have heard some good things about the FX600, but I have yet to have had the opportunity to drive on one. I have driven on the exedy twin disk in the evo and it is a good clutch. I have also heard some good things about quarter master. A good friend of mine has a twin disk in his EVO 1 and that clutch is so freakin smooth. I will find out which clutch it is and get you the info and price on it.

How much are you looking to spend on a clutch?

 

[93jdmlaser]

Go for a 2900. I had a fx600 and street driving will kill it. Putting a 2900 in my car now. Twin discis not needed for 400 horsepower you can save over a grand by just getting a 2900

 

[larsrya8]

Go for a 2900. I had a fx600 and street driving will kill it. Putting a 2900 in my car now. Twin discis not needed for 400 horsepower you can save over a grand by just getting a 2900

If he didn't want the pedal pressure of a 2600, he definitely isn't going to want a 2900. The engagement on that thing is also far from "smooth".

The DSMLink guys have lots of good things to say about Quartermaster as well.

 

[93jdmlaser]

The pedal pressure on the twin disc is not that light either. I dont see any reason a twin disc is needed for 400 crank hp. Go to the 1/4mile time list and look at there mods. Youll see alot of 2600 and 2900s because they work for 1000 less. They even make a 3200 if you need more. The 2600 can hold 415 torque which should be more then enough

 

[larsrya8]

The pedal pressure on the twin disc is not that light either. I dont see any reason a twin disc is needed for 400 crank hp. Go to the 1/4mile time list and look at there mods. Youll see alot of 2600 and 2900s because they work for 1000 less. They even make a 3200 if you need more. The 2600 can hold 415 torque which should be more then enough

I agree with you completely. I plan on getting a 2600 when I get around to it. Those who complain about it's pedal pressure must be sissies or something, especially on a 2G. The 2G helper spring and the addition of SS line is all you need to have a nice setup (a new fork too on higher-mileage cars). The engagement wasn't harsh in the 2600-equipped car I drove. Maybe a little grabbier than stock, but I got used to it quickly. On a car that isn't beaten on daily, the ACT 2600's have lasted over 30K miles on some cars.

I think the 2G DSM's are spoiled with the light clutch pedal we have. My friend's '89 Cavalier has a noticeably stiffer pedal than my GSX, but I got used to it after three shifts. When I got back in my car I literally slammed the pedal to the floor on accident it was so light. And I'm a weakling!

So unless you really have you really really have your heart set on spending over $1000 on a twin disc, you should probably just go with the ACT. You have other options as well, like Spec clutches. Spec promises "stock-like" pedal pressure. Might be worth it, but do your research before making any decisions. I would rather spend money elsewhere, but you know what they say about opinions.

 

[UMR98GSX]

Well it's only going to be 400 crank hp for a little while. A year from now I will have graduated college and have a job lined up as well as a daily driver so the GSX is going to go through a total makeover. Looking for 600+awhp. The car will not be a trackslut, just a fun toy and dyno queen.

The reason for the light pedal pressure is that I would like to keep the car the most pleasant to drive as possible. Nothing about not being able to handle the force or anything, I simply want a nice light pedal with unbelievable holding power and good street manners.

As far as price is concerned I am looking at no more than around $1500.

A couple more concerns I've had is that I have heard that the twin disks are noticably noisier than any stock or aftermarket single plate clutch. Is there any truth to this? Also rumor has it that it will wear much faster than any normal clutch when driven on the street instead of just the strip. Anyone have any actual experience with that? I am hoping that this will be the last clutch I will ever have to buy hence not worried about spending $1500 once instead of $400+ a couple of times.

I have also looked at a couple of other setups. One from Devo Tuning:

http://www.devotuning.com/drivetrain.html

Another from TurboClutch:

http://www.turboclutch.com/ccarbon.html

The Devo clutch is made by Quartermasters but I am worried about the streetability of it seeing that the entire assembly, flywheel and all, only weighs 15.5 lbs.

Anyone know anything about either of these?

Thanks for the replies but please don't tell me to get a single plate since I am asking about twins, let's keep it on topic.

 

[93jdmlaser]

I can tell you personally that a twin disc will not be the last clutch you ever by. If you drive it on the street you will destroy it because you want to slip it to leave a light smooth but does NOT slip at all.

I say this from personal experience after just pulling mine from the car because while driving home it started banging and I pulled it out that night to find it all burned and beat to hell with clutch dust all over everything. This is not from racing on it because it held that fine but when you leave a light and try to slip it you will smell it burn.

About it being light I have 272s and I set my idle up to 1000 just because it was so light that when you let it out of gear the rpms would fall so quick it wouldnt idle so I would have to slow down in gear till almost stalling out. Mite have been something else but well see when the new clutch goes in. Im going to a 2900 setup.

If you want a daily driver do NOT go with this. It will die from street driving and piss you off even more having spent 1500 to learn this. When or if you ever make 600+ ACT will still have something for you. Evil Eagle still using a 2900 I believe and if you need more then that you can get a 3200 from act and run a 6 puck. If your looking for 600 hp pedal pressure should not be a concern. You have to give a little. The twin disc is no light weight on pressure either. You can go with a 2600 for now and when the time comes just get a stronger pressure plate. Just save your money the twin disc is not what you want for street driving. Hope this helped

 

[Caithness]

The place to do research on twin disc clutches is evom. There are people there that have been through two or three different twin discs, which might make you question the "last clutch you'll ever need" idea, though the people that have straight up KILLED them are usually complete idiots.

It seems to me after some reading there that carbon is out of the question just for cost. It is probably the most streetable because you can slip it, but I've read the same things about killing it on the street. It seems that a good full carbon clutch can take a ton of heat at the track without warping stuff, but it doesn't like daily driving stuff nearly as much. One guy had the Tilton twin disc with the cerametallic/organic combo and while it was very streetable and he could slip it out well, that was at the cost of burning up the organic side in 6000 miles while the cerametallic side was almost untouched. That leaves us with kevlar and cerametallic. I know nothing about the kevlar option. My current single-disc South Bend clutch is a kevlar/cerametallic hybrid and it seems to hold well and slip well, that's all I can say about the combo. The full cerametallic Tilton had a lot of reviews on the Evo board, being the cheapest, but at that point you're basically back with six puck style disengagement, on-off, and slipping it on the street kills it like in the guy above's experience.

Realistically, the advantages of these clutches are in their lighter overall weight, longer lifetimes and high torque holding in high hp cars, and much less clutch disc weight which equals terrific high-rpm shifting. That, and lower pedal pressure. Drivability is better in one way because the pedal pressure is very light, but worse because disengagement is typically harsh. Streetability is not as good because by slipping these cerametallic discs that don't want to be slipped, you're putting a lot of heat into the clutch, which is a much smaller package to start with and is much less capable of dispersing that heat.

That's just what I've gathered from a few hours of reading on evolutionm. I've never run one, though I'm still tempted to even with all the downsides. I'm very interested in the devotuning clutch, seeing as how it's the cheapest twin disc I've seen for sale for our cars, and built by a reputable company. I just wish there were more users and more user reviews.

 

[PSI NRG]

Run the Exedy twin disk with cedar disks I have it and I LOVE it holds up to 1000 hp and you can slip the damn thing too!! Makes launches ALOT easier on the trans. plus for street driving its much more drivable then a 2900.

Exedy hands down!

 

[TurboAnything]

Ok i have a Quartermaster twin disc from DEVO and it is sooo Sweet nice disengagement very light pedal pressure like a 2100 nothing bad to say except for i got the wrong clutch when i picked it up and ended up pulling the trans 4 times to get the problem solved. But if you have the money Call Adam at Devo and get the twin disc its worth every penny.

 

[starion4g63]

Here is a real world view. A 2900 with a 6puck is very easy to drive and will work with 500-600hp cars. Got me to 10.1 at 142mph. With big tq like with nos it didnt hold. The quartermastrer is a good cheap twin disc. It is not for your every day car. It is loud and not easy to slip. i do street my car but not alot(if i did I would hate life). So to the guys that want race parts for there street car,I say go for. But not only is it a waste of money you will hate life just to say you have a race clutch. Hell are other car has a tilton carbon carbon in it and when it has some heat in it its hard just to get on the trailer and then there was a kid that told me he has one on his 20g car and loves. 4k+ for a clutch but still has a 20g turbo.WTF

 

[alqatan]

I know this was designed for more than 700 wheel hp and would hold great for drag use
I know I should get the metalic over the organic because the organic need to cool down from run to run or it would slip and will hold less than metalic.

It was designed for better 60ft,better shift,better ET and less pedal effort
my question how does the drivebility feel?
I heared 99% of the twin disk have release bearing sound at idle till you press the clutch and then this sound will go, does it have this harsh sound?
Does it have chatter at launch with metalic clutchs?
Does devo tune sell modified fork for this clutch and does this included with the kit or sold sepretly?
How much for the modified fork and is it nesseray and what is the reason to modify it?
Thanks

 

[93jdmlaser]

... though the people that have straight up KILLED them are usually complete idiots... I've never run one, though...

Street driving and slipping from lights will kill it doesnt make you an idiot. Its not good on a daily car. I know this cause I have run one. I really dont understand all this I need a twin disc crap. Does everyone have that much money to abuse. ACT even make a 3200 and use a 6 puck for a ton less but I guess everyone is making over 600hp and needs one. Advise from someone who has had one. IF you DD your car do not get a twin disc and make sure your tranny is built if you do and listen to starion4g63 he knows what hes a good guy and knows his stuff. Car went 10.1 using a 2900 what more could you guys need for a DD

 

[Morphius]

Some of you can't read, can you. He didn't ask for opinions on why he should go back to a ACT 2600/2900 or even a 3200, did he??

I can't speak to twin disk setup, but would like to comment on the street/light slipping comments. How this will wear all depends on you. Speaking on conventional clutches, I know people that wear the hell out of them in 10K or less. Me, I have close to 60K on a 2600 and it's got at least another 30-40K left in it. It totally depends on your driving habits. I've also never broken a trans, where there are those that do it every other week. It's called technique. Simply put, some have it, some don't.

So, my suggestion would be those that burn them up on the street, work on your technique.

 

[93jdmlaser]

Until you have used one you will have no idea why they burn up on the street. They are made for drag racing and not trying to leave a redlight. Its like on and off no in between. As for the ACT we are telling him what he should do since me and starion4g63 both have used a twin disc and are trying to save him the trouble

 

[Morphius]

What about the population that uses the twin disk, with no issues and doesn't burn them up?


If you search for 2600, there are people that claim a 2600 is crap and they burn them up. Yet, there is a population that uses them with no issues at all.

 

[starion4g63]

Listen guys, every one has there point. But keep in mind you are talking to poeple that have been where you are years ago. We are just trying to help with some real world views. it just might save you alot of trouble and cash. again its anyones right to buy whatever they want. there are also lots of twin discs out there. You can get some twins to slip fine,but they won't hold anymore power then a single thats 1/4 the price.

ps-show me 1 twin disc that has gone 60k

 

[starion4g63]

the fork comes with it. it is a good cheap twin. It makes more noise when the clutch is pushed in. What you here are the discs flooping around. The drivebility is ok at best,yes i drive my car on the street but it is no dd. There is no chatter at launch it just slips very little and then grabs. Pedal is about the same as a 2600.