TT,
You guys are known for having NOT jumped on the Exedy multi-disk bandwagon. What clutch would you recommend for me?
Important considerations:

1. Price
2. Drivability in in traffic
3. Will last if treated right
4. Will perform adequately for both limited road racing and drag racing.

I drive my car to 3 or 4 days per week on 91 octane and around 420whp/385wtq. When I drag race on occasion. Then my power is around 580whp/525wtq.

 

I'm going to say that they will say "ACT 2900 w/6 puck" thats what my galant Vr4 has and Keith knew that I was going with a GT35r after the 30r doesnt do it for me anymore!

 

whats wrong with the exedy twin? I've had one for alomst 40k and its great.

 

The Exedy Twin HD is a great clutch for around that HP number.. its also one of the most expensive clutches out, and not everyone has the budget for one.. the ACT Xtreme w/ a 6 puck is going to be your runner up.. don't get me wrong, its an amazing clutch, but it is unsprung.. there is a lot less slipping of the clutch upon takeoff, some people have been known to not like it while stuck in traffic for prolong'd periods of time.. the exedy twin will hold the power, and still feel much like the stocker.. ACT's Xtreme makes the pedal pressure slightly stiffer as well. Every HP66 Turbokit car we have done has the ACT Xtreme w/ unsprung 6 puck.. they are all daily drivers.

-Mike

 

Thanks Mike. ACT is now making a 6 puck with a sprung hub. I'm leaning in that direction right now.

I'm going to be using a stock flywheel that is almost perfect new condition. I'll have it resurfaced, of course. Wouldn't the stock heavy flywheel help absorb heat better than a lightweight flywheel?

Thanks again,
Tom

 

if the 6 puck is sprung how harsh is it going to be in daily driving situations.

 

they actually have the sprung 6 puck out.. Paul here uses it on his evo.. I have have heard that at high RPM shifting you get locked out with the sprung puck.. it is smoother then the unsprung, but not amazing. As far as lockout issues, paul launches his car at 8k+ and shifts even higher.. so far, so good. ;]

-Mike

 

I had an exedy twin carbon that lasted less than 5k miles of street driving on stock turbo. Once I upgraded, I had to switch to the act 6 puck. It's a pain, but it holds all the power. I love it, except for the groan/squeak noise it makes when moving from a stand still in first gear. Overall a good clutch.

 

yeah.. he is right, it does have that groaning noise upon takeoff.. we noticed that if you go with an aftermarket flywheel its not as bad. how did you smoke a twin carbon in under 5k miles? was it installed wrong?

-Mike

 

i have the act 6 puck unsprung too...i think i have the 3200lb pressure plate but i could be wrong. within the first 15 mins of driving with it installed i got stuck in traffic for about 45mins. my first thoughts were why oh why did i go with this clutch. but after awhile im so used to it its not even an issue. i even taught my girl to drive stick on it...well she learned on the street disk but can drive with this one now too...if your in traffic ALOT u might want to steer clear of it but i get caught in traffic alot and i dont plan on switching to anything else anytime soon.

 

Smoggy, what about Stage 3+ from Spec? I have a couple of friends using it, one with more power than you and they all feel the same - holds power and is ok for street driving.

 

I highly recommend the exedy twin disk. You won't like the ACT 6 puc in traffic, the street disc wont hold the power you are looking for, and the 6 puc sprung won't shift as nice as a twin disk will at 8k. You'll be more than happy with the twin disk. The pedal pressure feels close to stock, it goes into gear like butter, and it takes a good beating. Several 150+mph passes on the one we have our race car. Its a good time.

 

Thanks for your input. I have had some interesting developments on my Exedy Triple Carbon. I'll post copy my post from SoCalEvo.net and post it here in a little while.

 

Ya, I would have to say from driving a exedy triple carbon to trying out Pauls 6puck, I definetely would prefer the twin disk atleast. I didnt get very far(HAHA)but I could tell it would suck in traffic.

 

Ok, lemme try to keep it short:

* Alfred was tuning my car on the dyno on 100 octane. He got the baseline timing, AFRs, partial throttle stuff done and was starting to crank up the boost.

* At about 22 psi, the car is making around 445whp/400wtq and the clutch just starts slipping right at peak torque. Alfred tries heating it up a bit, but no dice. It just slips everytime thereafter.

* Alfred gives me the bad news, but at least I get to take my car home as it is fully driveable. Later that night I decide to jump on it and, sure enough, the clutch slips at around 5500rpms. Damn! I leave a couple of messages to the Exedy technical department and do some searches on the EvoM. No call back from Exedy, and the EvoM has about 5 other members who had their $3000+ dollar triple carbon go out on them very early (3000 to 9000 miles). I start looking at affordable alternatives, namely the ACT sprung hub 6 puck with Extreme duty pressure plate: ~ $550 out the door + flywheel. The boys at TTech, Chris and Josh both tell me that they'll help knock out the install as soon as I'm ready, but I'm bummed because I see this money as taking me away from my upcoming 2 piece rotor purchase.

* Here is the weird part. After that first night, it never slips again. I keep waiting for it to give up the ghost, but it doesn't. Now, after two weeks of warm weather, cold weather, and inbetween, it just holds. But, keep in mind, this is at around 22psi. Who knows what will happen at 25+. Alfred want me to come in a finish tuning the 100octane tune right away, so I guess we'll find out if it holds soon enough...

* Theories now being accepted.

(supporting info: the car had been pulled in and out of the TTech shop stone cold every day for about 1 and 1/2 months - no regular driving at all. Just backing out cold and pulling forward at the end of the day cold.)