Twin Disc chatter....loud??

[EVILutionVIII]

Heading to Zens tomorrow to get an Exedy Twin Disc installed. I've never driven or ridden in a car with anything more than a single disc and i'm curious as to how bad the noise is. I've heard that it sounds like loose marbles when the pedal is engaged....anyone with experience have any inputs?

[ryanowarrior]

i've heard that the Exedy Twin isnt that bad at all. ask Ryan thats what he is runnin in his ride.

[Hikaru]

I have the exedy twin. Best clutch I ever had. Grabs like a mother and feels like stock.

[bomjoon]

i like my act... its been on all my cars that were manual...

[EVILutionVIII]

I have the exedy twin. Best clutch I ever had. Grabs like a mother and feels like stock.



http://forums.maxima.org/images/smilies/woot.gif Now I feel alot more comfortable about this purchase.

[TripperFx3]

I've driven numerous 240's and Evos with em and they're fine. They suck the big one on an S2K though. Made 10 bucks off a bet that I wouldn't stall out driving my buddies S2K with an exedy twin through the parking lot! I made it, but just barely... lol

[Hikaru]

http://forums.maxima.org/images/smilies/woot.gif Now I feel alot more comfortable about this purchase.

There is a reason the Exedy Twin is the most favored replacement for the stocker :D

[em1toevo]

What is the difference between a single disc and a twin disc clutch?

[Evolvedgti]

What is the difference between a single disc and a twin disc clutch?

Power holding .

[Evolvedgti]

I have the HD twin, and upgraded from the 6 puck ACT. It doesnt chatter where the ACT used to. +1 for the greatest clutch I have had.

[em1toevo]

Thanks for clearing that up for me

[BlewByYouEvoVIII]

best clutch you can buy imo. Occasional chatter, nothing bad at all. Feels like stock, holds a ton of power. What else could you ask for? ;)

[Evolvedgti]

Thanks for clearing that up for me

generally speaking, adding another disc enables more capacity. The twin can hold they say 450 tq(drag), 5-550 tq(road race), where the triple is 800 or something like that.

I agree with Ryan, Best clutch, but I had it first so there :p

[em1toevo]

That Exedy is pretty expensive compared to the ACT and others. I guess you get what you pay for.

[ryanowarrior]

whats the prices? and whats the different models of this clutch??

[em1toevo]

I've seen them around $1700 for the Exedy Twin.

[TouringBubble]

best clutch you can buy imo. Occasional chatter, nothing bad at all. Feels like stock, holds a ton of power. What else could you ask for? ;)

Less rotating mass ... :rolleyes:

I do like the twins and triples for drag ... great to launch on and hold TONS of power. I prefer a sprung 6-puck for a mild street car. I autocross, so I really don't want that extra weight of the twin.

[em1toevo]

^Are the sprung 6 puck clutches similar to stock in feel? What kind do you recommend?

[shunderwunder]

The pedal feel is mostly from the pressure plate. The ACT HD pressure plate feels much like stock so that shouldn't change much. From what I hear the sprung 6 puck disc is very grabby & can be tricky to get used to & not too fun in traffic or up hills. I'm putting one in my car with this new setup cause I already had the ACT street setup & I figured it was a smart move to upgrade to 6 puck for $120 while everything was appart & if I'm not happy with it then I can upgrade to Exedy Twin down the road. I'll reportt back once I drive it. I'm a bit scared about them being a pain on hills cause my driveway is a bitch. Those who've seen it know what I mean. :D

[BlewByYouEvoVIII]

Less rotating mass ... :rolleyes:

I do like the twins and triples for drag ... great to launch on and hold TONS of power. I prefer a sprung 6-puck for a mild street car. I autocross, so I really don't want that extra weight of the twin.

I consider it an acceptable tradeoff considering how much better the feel of the Exedy is.

[Evolvedgti]

whats the prices? and whats the different models of this clutch??
There is the SD(standard) and the HD, (heavy duty) cermatallic, and carbon

The pedal feel is mostly from the pressure plate. The ACT HD pressure plate feels much like stock so that shouldn't change much. From what I hear the sprung 6 puck disc is very grabby & can be tricky to get used to & not too fun in traffic or up hills. I'm putting one in my car with this new setup cause I already had the ACT street setup & I figured it was a smart move to upgrade to 6 puck for $120 while everything was appart & if I'm not happy with it then I can upgrade to Exedy Twin down the road. I'll reportt back once I drive it. I'm a bit scared about them being a pain on hills cause my driveway is a bitch. Those who've seen it know what I mean. :D

When I first got my ACT, I launched into traffic. Totally didnt mean to, it was on a hill.

[Evolvedgti]

I've seen them around $1700 for the Exedy Twin.

I got my bnib 1350 shipped. Prices are normally around 1500, but you have to shop around

[TouringBubble]

I've driven a few different 6-puck sprung clutches. The pedal feel is slightly heavier than stock, but not as heavy as the ACT HD. Since the ACT uses a disc very similar to stock (for smooth engagement), it needs a heavier pressure plate to increase clamping force. With the 6-puck, the disc itself grips better, so you can use less clamping force and keep the pedal light.

The sprung 6-puck options are a little harder to drive than stock, but they are not difficult to drive IMO. I have never stalled one, even when I didn't know the cars had them. It catches quick and hard, and can chatter when slipped a lot.

I'm likely getting the SPEC Stage 3 sprung 6-puck. It's a nice feeling clutch and I can get an awesome deal on it. I'd much rather DD that clutch than the HD ... traffic would wear out my left leg quick.

[Apex i ITR]

I've usually had single plate clutches...this is the first multiplate (in this case triple) clutch I've driven and its been "challenging trying not to press the pedal all the way to floor and not stall. In the morning its a bitch to drive but after a few minutes of drving it grabs like no other. Chatter is LOUD on my carbonetics though.

Zen said my clutch feels almost like stock (maybe a little stiffer) and were amazed at that...they wanted to know how Dylan got it to feel that way (Ryan maybe you can chime in if you know...he says its a pretty popular clutch at Forged).

I've only started getting on my car recently. Funny thing is the drivetrain is built for 600+ but I only want 400-450......well for now.

[TouringBubble]

Multi-plate clutches do usually have a lighter pedal. You can do that because you are increasing the surface area of the friction material by stacking the discs. You don't need as much pressure to hold it with so much extra static friction.

[Hikaru]

I've seen them around $1700 for the Exedy Twin.

I got my brand new shipped for $1320. You do have to shop around. Look on evom for dealer specials.

[EVILutionVIII]

I bought the clutch through Zens for less than $1500. I found one for $1350 as well but opted to take advantage of Zen's discounted labor rate when buying from them.

I've gone through 3 clutches in the past 3 years....probably due to a combination of my driving style, the abuse the car takes at the track (autoX, road races and drag stip) and the additional power on a clutch rated for less. Can't wait to get the Evo back with the new clutch....hopefully it'll be a while before I have to replace it again :D

[Hikaru]

^yeah man, it all works out to be the same in the end. either you save money on the part or on the labor.

[Apex i ITR]

Went up to the shop yesterday.......Operation is going well. LOL. Chris's foot is jacked and he was still in there doing what he needed to do.

[EVILutionVIII]

If only I lived closer....Zens would be my one-stop shop, these guys are great!

[EVILutionVIII]

So I have a points race this Sunday that I'd like to make but it really depends on whether or not I can get the clutch broken in (in time).

With that being said, is the method and miles the same as a single disc clutch? I would assume so....

[Evolvedgti]

standard is 750 -1000.
I have heard of people doing only 500.

found this.

http://forums.evolutionm.net/evo-engine-turbo-drivetrain/92145-twin-exedy-break-period.html

I didnt worry about it as I drove from Ohio to Tenn after my install

[Evolvedgti]

Come to think of it, around 3-400 miles I launched on this redneck prick. so ? :)

[TouringBubble]

General break in on a clutch is 500 miles of CITY driving. If you drive a lot on the highway (little clutch use) then go longer ... 800 - 1000.

[EVILutionVIII]

What is the end result of a clutch not broken in fully?

And 3-400 miles would be great if I could get away with it. I can probabaly knock that out in a few days.

[Evolvedgti]

General break in on a clutch is 500 miles of CITY driving. If you drive a lot on the highway (little clutch use) then go longer ... 800 - 1000.

Yeah, I agree with TB, that is why 1000 was on my brain, I was doing highway.

[TouringBubble]

What is the end result of a clutch not broken in fully?

The disc isn't heat cycled/mated to the flywheel/PP properly and that can cause hot spots, premature slipping and uneven wear.

Think of it just like a brake pad ... go out on new pads and rotors and try to stop from 100 to 0 hard on the first time out ... they will stop poorly, scream and smell because there are 2 new, un-mated surfaces. Exactly why you bed in new brake pads ... get them to temp, then mate the surfaces and cool them properly the first time out.

[TouringBubble]

Another break in option is to do it just like bedding brake pads ... just do a lot of stop to first to second to stop actions over and over, then drive a bit to cool things off. Just like a loop around your neighborhood several times. No one ever recommends that though ...

[em1toevo]

I've usually had single plate clutches...this is the first multiplate (in this case triple) clutch I've driven and its been "challenging trying not to press the pedal all the way to floor and not stall. In the morning its a bitch to drive but after a few minutes of drving it grabs like no other. Chatter is LOUD on my carbonetics though.

Zen said my clutch feels almost like stock (maybe a little stiffer) and were amazed at that...they wanted to know how Dylan got it to feel that way (Ryan maybe you can chime in if you know...he says its a pretty popular clutch at Forged).

I've only started getting on my car recently. Funny thing is the drivetrain is built for 600+ but I only want 400-450......well for now.
So you don't push the clutch to the floor? I know you don't have to, but I always do. I feel like it is better for the clutch to ensure it is engaged before shifting.

[Apex i ITR]

Guys at ZEN said when you do that in increases wear on not only the clutch but the slave cylinder as well. They surmised that maybe the premature triple failures was due to the clutch pedal going all the way down to the floor.

[TouringBubble]

Or maybe an improper pedal adjustment ... you will trash ToBs if the pedal isn't adjusted correctly for a new clutch.