You don't need a twin plate for 400rwhp a good 6puck sprung clutch will handle that.

 

Dai, an Exedy hyper single would work perfectly well for 400whp. Just go with that one.

Ramy, I have driven cars with ORC twins, standard Exedy twins, and the Exedy carbon that Rice Racing was talking about. And Rice was 100% spot on. That is the most civilized multi plate I have ever felt. The standard Exedy is great too though. The ORC is a great clutch but it does have a very heavy pedal and is always going to be tough for daily driving. If you want the best of both worlds then I would suggest either of the two Exedy twins. And if you want the easiest possible clutch for daily use then the carbon Exedy twin will be your winner. If you need I can get you a price quote on one. Just PM me again and let me know if I can be of any help.

Zach

 

clutches with springs can be daily driven. If the clutch is "hard" to drive you'll get use to it. I had a exedy twin, act with springs (street disc) and no springs (6 puck). The clutch and the plate makes it hard and all but your legs and you get use to the drive. with the act no spring, it was ruff when I first got it but after a while you get use to the feel. I only tryed the exedy twin and I race a lot in the streets but I also DD my seven. The exedy was easy for me but it went out kind of quick i think. I had 2 of them. I only got a couple of 1000's on them before it went. I'm still on the 2nd one but I'm deciding on something else. If you want something streetable but still wnat to race, i would get a easy pressure plate and a harsh clutch. Peld still "soft" but grabs well. On the twin its like that, feels stock but grabs better then a stock

 

I know nothing about clutches! And, as ramy noted, there just isn't enough info on this forum in this regard

I heard the exedy single was less streetable than the twin... no?

There's a good price on the exedy twins (non-carbon) at the moment - around US$750, but I could stretch for the carbon single... any advice. I'm only interested in (a) something that I'll use with the twins and, most importantly, (b) something as streetable as possible (my wife drives the car too)

 

my ORC spring type twin plate (ver. 559) is the newer one in which the selling point was streetability. the older ver. 7x9 (forgot the exact number) one i heard from my friend with the skyline is that its really stiff and the engage point is small however it handles a bit more power. i think the 559 came out relatively recent for the FD cuz i bought the first batch from ORC back in the fall of 05'. i'm not sure if you can still purchase the older ver7x9 for the FD anymore tho. i bought the whole kit with flywheel and it came with the pull to push type conversion.

the ORC clutch kit is very chattery and the engagement is pretty smooth if you blip the gas to 2.5k rpm. you can even use the slip method to launch the car. its basically a tone down version of the older ver.7x9.

as for comparison sake between exedy hyper single (holding 400whp) and the other twin plates (usually could hold 400-500whp) is that the twin will out last the single given everything is equal.

 

The Exedy twin plate is about $1750 (not $750) but A-Spec offered it to me for $1575 shipped. I was going to get the D-Core but besides being back ordered for months, it's another $800 and I couldn't justify the cost difference.

 

a vendor on yahoo who I often buy parts off has a special sale at (the equivalent to) US$750 - so I'm thinking it might be a good time to buy. But if both single carbon and twin standard can handle the power, which one is more streetable?

 

Are you refering to the Hyper Single as $750? Hyper Twin is $1,750 and Hyper Carbon and D-Core carbon are about $2,500.

Hyper single isn't recomended for single turbos.

Hyper carbon is not streetable as the carbon and steel do not have good friction and you have to do burnouts (like at a drag track) to make it sticky. SInce it takes a lil bit to heat up and cools very quickly it's not recomended for street.

D-Core supposedly is streetable. No warmup necessary, easy on the gears, less chatter. I could not get any more info on this as it's too new. How much quieter, how much less chatter, how much smoother, worth the extra money, Exedy couldn't say.

Twin plate handles the horsepower and torque and is the recomended choice. has slight rattle at idle. Light pedel effort.

This is the info I got from Exedy. Mine hasn't arrived yet, so I have no experience with it yet.

 

I'm running twins, currently at about 327hp@wheels with a light tune - so I want room to move in terms of coping with the power.

yes - you're right on the pricing, apologies for being a dipshit.

the exedy pricing (stores, new parts) I can currently see on yahoo is:
single @ US$740
carbon single @ US$1205
compe-d twin is about the same
carbon d-core twin @ US$1410

can't find a price for the standard exedy twin at the moment

I'm after as little compromise as possible - while still being able to cope with the power, and potential power.

 

At your HP and staying with twins, i'd get the Hyper single and stay away from carbon except for the D-Core single. If you can get it that cheap, buy it and buy me one to.

 

Hey Zach,

Thanks man...that's EXACTLY the type of feedback I'm looking to hear. Someone who's actually tried the diff clutches. And I gotta say, you guys have me sold on the Exedy twin CF D-core.

But lemme get this straight, you're saying that despite it being a CF clutch, the D-core is still the best for daily use? It doesn't require warming up etc like other regular CF clutches? And if I understood that correctly, you happen to know why? Cuz from reading this thread, I thought that CF has to get hot to grab, and it cools so quickly that it's not good for street use, but for some reason the D-core is different?

dohc-vtec_eg, thanks for the 411 on sprung vs. unsprung. That's what I guessed.

~Ramy

 

Elo?

 

D-Core is back ordered for several months at least and limited quantities right now in the states. If you guys in japan can get them and sell them for less then the freekin $800 markup here I would have bought one and still may buy one and sell my cerametalic version.

 

As DaiOni said, they can be had for quite a bit cheaper than the rediculous US markup... I'm gettin mine from Japan

Oh and can anyone answer this:

But lemme get this straight, you're saying that despite it being a CF clutch, the D-core is still the best for daily use? It doesn't require warming up etc like other regular CF clutches? And if I understood that correctly, you happen to know why? Cuz from reading this thread, I thought that CF has to get hot to grab, and it cools so quickly that it's not good for street use, but for some reason the D-core is different?

Thanks
~Ramy

 

Exedy USA couldn't answer that for me and it's not available here in the USA. CHeck out their website, limited quantities and back ordered for months. Looks like exchange rate is batter then last year, but not as good as it was years ago.

 

Do they make one for a T2?
I have tipped the 450rwhp mark and my RPS six puck EPP/CM is not liking it for drag racing.