I want a new clutch, My Evo is a daily driver, I don't drive hard but have my moments. I never launched my car, I want to thats why I need a better clutch.


Why is the Exedy twin disk cost $1000 more than the ACT clutch, I've heard great things on both but the Exedy twin disk costs soo much money. Is the ACT clutch single disk?.. because the Exedy single disk is still about 500 more than the ACT.

I want a clutch I can drive hard on and last the longest?

Which one is more ideal?

 

The ACT is a single organic disk w/ pressure plate. Exedy makes a comprable clutch for about $500. The Exedy you are refering to is a cerametallic clutch which comes two disks, intermediate plate, pressure plate, and lightweight flywheel.

 

The ACT kit uses an Exedy clutch and Plate but ACT heavily modifies the pressure plate. I found this out when I ordered the ACT setup and found Exedy written all over the pieces.

 

people have been reporting shifting problems at 7k rpm with the ACT. I found out there is a reason why people forked out the extra cash for the Exedy twin plate.

https://www.evolutionm.net/forums/sh...d.php?t=154973

 

https://www.evolutionm.net/forums/sh...d.php?t=147510

 

good write up, I don't think I'll go for the ACT then..

For the single and twin disk, which one is more ideal for a daily driver? I still want to drag time to time and launch my car so I'm thinking the twin disk.. but I saw the cheapest price for the twin disk was 1400.

Do I need to buy anything else beside the clutch.. probably a new throw out bearing, but do I need new bushings?

I think the exedy kit comes with a fly wheel too

I need the clutch to probably last me the rest of the life on my car. There's nothing wrong with my stock one tho, so I guess I can hold on to that.

 

Are you sure the Exedy comes with a flywheel ????

 

Yes, the exedy twin disc clutch will come with its own flywheel.

 

You're rambling! hehe

Yes, order a new throw-out bearing from the dealer. I believe that's all you'll need. You might also try to pick up a clutch alignment tool.

I had an Exedy twin disk on my '03 Evo and drove it on the street for a while. It is a fantastic clutch for racing, but a bit much for the street. Pedal effort is slightly higher than stock and it makes a fair bit of noise. For daily driving, the single disk should be fine. And remember, you get what you pay for....

Good luck,
Joe
www.joe250.com

 

But I would not believe those reports at face value, because my ACT shifts at any rpm I choose at any speed, and even if I powershift. I _have_ missed a few shifts while at the drag strip, but I blame those all on me. None were grinds or lockouts, but rather straight misses from my hand slipping off or from me hitting the gate instead of the slot.

I usually shift at 7200-7300 on the 2-3, and then again at 7200-7300 on a powershift with the 3-4. It worked the same on the stock clutch as it does now with the ACT. I think installation quality is the reason for people not being able to shift at or above 7k rpm. That, or tranny issues, of which I have none (MR 6spd).

 

I WOULD LIKE TO RECANT THIS STATEMENT - PLEASE READ!!

So, I've had my ACT in for a few months and have loved it. The daily driving is exactly like stock, and the extra pedal pressure is not even noticeable to me anymore. I've done 10+ autocross launches that were awesome, and I've been to the drag strip 2 times and have had little-to-no problem with shifting. I had missed a few in those 2 trips, but nothing that would indicate the clutch being a problem. I even hit my best of 12.15 (twice) in an extremely hot summer afternoon at 1pm just 2 weeks ago, so I thought things were fine and dandy.

Well, last night, myself and a few other Evos went to a local track that doesn't normally have Friday night test'n'tune, because the temps were going to drop into the low 70s after sunset. Way better than 95 in midday, right? Well, unfortunately, things did not work out at all for me, and here's why...

I showed up with a hot car and went right onto the track for some pump gas runs to see if my TBE was good for a 12.4-12.5 run on 93oct. I launched with some wheel hop (ugh, that's new), then completely missed the 2-3. I didn't grind or go to 5th, but simply got locked out of 3rd. Ok, no big deal, it happens sometimes, right? So, I hotlap around and go again. The launch was only semi-decent (1.78), but not good for me (mostly 1.70s 2 weeks ago), but I hit my shifts and had a 12.68, though at only 105.9 (slower than when I just had an s-afc), so maybe it's just hot and the car is heatsoaked.

I then put in 3 gals of 116, which is good, except that I still had 5 gals of 93 left (dammit). I line up again and launch (1.78 again, wtf), but miss 2nd. Again, I get locked out completely...didn't grind or miss or slip my hand off the shifter. I accelerate in 2nd then miss 3rd...same thing...complete lockout. Ok, now I'm worried. What the hell is going on, and why can't I shift? Well, I go on to get ONE clean pass, which only nets me a 12.44 at 110.24. I bounced off the rev limiter, so I know I was making my normal power, but I wasn't able to get any 60's worth a damn, and I was really struggling to shift at my normal speed. Well, the rest of the night, I didn't get a single pass without missing a gear, so I was really pissed. My very last pass, I altered my shifting just to ensure I didn't miss a gear and only ran a 12.67 at 107!!! Now, this is crap I ran on pump gas with a damn cat-back in the heat several months ago. This time, I had the full TBE, fuel pump, race gas, and 24psi in 70 degrees after sunset and only got 107 after a crappy 1.85 60'??? Well, this told me 2 things: 1) Something is locking me out of my fast shifts (ACT?) and 2) I never realized how much of a difference fast shifting made.

So, after discussing it with my local Evo brethren and a few others on the board, I have come to the conclusion that it's the ACT locking me out above 7k rpm. I don't know why it didn't do it the first few months, but it's definitely doing it now. I went out and practiced 3 straight 1-2 shifts at 7k+, and each time I got locked out. I try to slam it in, but nothing happens, not even a grind. So, now, I have to either let the revs fall slightly, or just do it much more slowly, which is ridiculous. I may have to look into replacing a clutch that hasn't gone bad, else I won't be doing any drag racing for a while...

 

Thanks for that info before I buy my clutch... but won't you think the same thing will happen with the Exedy organic disk clutch.

I think I'm guna have to make more of an investment into buying the twin disk.

I heard the life span on a high performance clutch is 50k anyway? thats if you baby it, is that true?

 

whatever you do, I would not recommend the Exedy Hyper Single (the one that comes with the integrated flywheel) - not a street friendly clutch at all. The twins are FAR more friendly for day to day driving

there is no one, and I mean no one, who can tell you how long the clutch will last. I have countless Evo customers running at or close to 400 whp on stock clutches, and many many more who friend their stock clutch in under 10k miles. It is 100% dependant on driving style.

 

+1.

 

Ok, if I'm going to upgrade it is 100% exedy twin disk all the way.

Now I really don't know if I should replace my stock clutch or not.

It's fine, I just want added performance. This month my wifey is leavin the country this is the perfect time to do it... Now or Never

Or atleast when I have no choice