I know there are 1001 topics about this and trust me I've read most of them but the majority of people offering their opinion are sell X brand of clutch.



I'm only looking for people to respond if you have first hand knowledge, meaning you have or had at some point in time a particular aftermarket clutch on an your EVO.



Here is a little background on my situation, currently my car is completely stock with the exception of a MBC used only to eliminate boost taper. I do A LOT of daily driving (1000 miles per week) but I also like to drag race at the track on a weekly basis. Currently I have about 28k on the car and don't plan to do any power mods until I've exhausted my 10yr/100k power train warranty which at the rate I’m driving will be in about 16 months. At that time I'll do the normal bolt on mods and would like to be making @ 400hp at the wheels.



So I'm looking for a clutch that will be fine for the amount of miles I drive daily, be good for the rest of the 75k miles I plan to drive stock but also perform well at the drag strip and be able to eventually hold up to 400 hp.



Please give me your honest opinion from first hand knowledge only.



Thanks in advanced.

 

Only experience i have is with the Roadrace Engineering No-name clutch.. you should also get a new flywheel.. if you go with rre you can get a deal on both... i paid around 720 for both. the 3000lb pp, disk,throw out bearing, and 10.7lb steel flywheel... site is in my sig. It doesnt feel any diff engaging the clutch but you can notice that its more grabby.. starting out may give you a prob.. but it can handle boatloads of power. Its also a single disk, so thats why its only 520 just for the clutch and i payed 250 for the flywheel you could pay 300 for a 9lb aluminum..

 

I have the ACT street disc, and i love it. For your type of driving i think it would be perfect.

 

I have the twin disk and like it a lot. if you want to race your car I think you will be better off getting the twin disk.

 

Its a true dilema choosing between the ACT Street or Exedy Twin.

At the strip, the main worry for either of these clutches is heat. These two manufacturers have attacked the problem from slightly different angles.

The Exedy uses a 7.75" diameter (low mass outside this diameter), centered weight flywheel and dual cerametallic discs with 2200 lb of clamp force.
Total weight of setup w/ flywheel ~34 lb.

The ACT uses a 9.5" diameter single organic disc with 2900 lb. of clamp force.
Total weight with Prostreet Flywheel ~32 lb.

Both systems will hold 440+ ft/lb. of torque, but with any friction device conditions such as surface speed and heat play a significant role in torque capacity.

The true advantage of the Exedy is that the centered weight produces LESS inertia than the competition at any RPM, which means your left leg will do less work getting the clutch to respond to your reaction.

The trade off is cost, the ACT w/ PS flywheel can be had for nearly half the cost of an Exedy.

 

the stock evo has 2200lb clamping force. also.. so how does the twin disc hold more?

 

I have a Act Clutch and i would not go back to anything else

 

https://www.evolutionm.net/forums/sh...d.php?t=126768

 

i just ordered an RPS single max clutch....I will let u know how it is after install and break in period

 

ACT at 30,000 miles after my stock one dies.

I have 40,000 miles. At the strip, i do at least 12 runs (not in atl, in AL).

I've gotten a lot better with the launching my car and I don't abuse it that much (yes, there is a way),

ACT at 10,000 miles with numerous launches, I still have very good feel on my act. Excellent for daily driving, great at the strip, it'll grip like you wouldn't believe, but of course there is always a draw back from aftermarket clutch.

But without having any association with Dirk, I would recommend ACT to anyone who doesn't have a 600 whp race only car. Even over Twin Disc (they warp and wear down too).

 

The Exedy Twin disc has four friction surfaces from two discs. Where the stock, ACT or any other single disc clutch uses two friction surfaces from one disc.

The reason the Exedy Twin doesnt have twice the holding power of an ACT/similar system is because the Exedy 7.75" disc gives up some leverage (for low inertia purposes) to the 9.5" disc found on the single disc systems.

The other factor that determines overall capacity is the coefficient of friction from the disc material. This will vary due to heat, but the #'s for these disc materials are in the same range.


dru

 

+1

I have the ACT street - I love it. You will not regret it. For a daily driver it works for me.

 

Ok, thanks for the opinions guys, its looking like the 2 main choices to go with are the ACT disk with the PS FW or the Exedy twin. I still have a couple of questions if someone with first hand knowledge could please answer.

The Exedy twin; Would this be overkill on a stock EVO for the next 60-70k miles?What about noise, does it chatter much?

ACT street disk w/ ProStreet FW; How light is the flywheel compaired to the stocker? I've had lightweight flywheels on other cars and it was horrible for daily driving, not something Im looking for on the EVO.

Thanks again for the honest input, I'm almost ready to place my order.

 

EXEDY: With AWD I dont think the Twin is overkill. With a little effort you could destroy just about any clutch, even at stock power levels. With two discs and a floating friction plate you will inherit some chatter, but it's really only noticable with the clutch disengaged (at a light).

ACT: The stock flywheel is 12.5 lb. while the Prostreet is 10.45 lb. The PS has a good amount of mass around the 9.5" friction surface providing enough inertia to give a similar to stock engagement.

 

I have 2 ACTs on my EVO (the first one was bad after 3000 miles due to incorrect installed/adjustment). For street use, it's great, grabbing than stock. But for the drag, I always have problem shifting into 4th gear in high RPM, let say above 6800rpm. It was completelt blocked out until I double-pump or let the rpm drop down for 2 to 3 seconds. This took some of my times. Adjusting it will temporary improve but not solve the problem. I was shift a lot better with the stock clutch which last me 18000 miles through many drag strips.

I'll try the Exedy twin or tripple next with my tranmission rebuild, hopefully by TRE. The whole tranmission/clutch thing don't feel right for me lately.

Anyway, the ACT is great fopr street use but if you want to compete in drag, it may, again, I'm only say "may", give you problem. Hope it'll help.