The ACT Street kit uses a 2900lb pressure plate, with a full face sprung Street disc that can handle 497 ft/lb. While the 6 puck disc does offer a 636 ft/lb torque capacity, the fact that it does not have a sprung hub may result in long term abuse to your drivetrain.

There are plenty of 4G63 powered vehicles with over 550 whp (mid to low 10 sec 1/4 mile) that use the street disc to avoid snapping t-cases, rear ends, and axle shafts.

As far as cost is concerned, the 6-puck is a few bucks cheaper from ACT, and that pricing is reflected from most vendors.

thanks
dru

 

How do you like the ACT so far. What are the problems with the clutch so far?

 

Id be careful with that 6puck! Is way to hard on the Tc. My friend just blew his TC at the track doing launches with that clutch. Get something else. Like the street disk but that way too harsh on the drivetrain

 

you know what, you are totally right. the ACT 6 puck is not sprung. i never really launched the car, so i never really knew. i just remembered that my friend with the gsx has a clutch net called Racing 6 Button "E-Z LOCK PRO" Sprung Hub. thats the 6 puck sprung disc.
thanks for pointing that out. i was about to get the ACT disc thinking it was sprung. then i remember that there where no springs

 

don't half *** an EVO clutch....it won't be worth it in the end

 

i just called clutch net, and its $475 shipped for a 6 puck sprung disc with a 2850lb pressure plate.
not a bad deal i say.

 

act doesn't sell sprung 6 pucks????? The only company that I know of that does, is Clutchmasters. (Which is what I bought)

 

That dont make sense because the Pressureplates dont give out its the disk... in my car the disk went out and the pressure plate i was told was fine!

 

like i said, my friend got the 6 puck sprung disc from clutchnet. your right that ACT does not make a 6puck sprung.
secondly, clutchnet's kit is $475 compared to clutch masters $795.

 

Well, that's 795 directly from them, you can get them for I think about 550 from a reseller

 

My PP and flywheel were completed roasted and looked like mirrors, but I still had plenty of disk material left strangely...

 

Why is it that ams got away with making 400whp on stock pressure plate and rmr 6 puck sprung disc if it cant hold the power. Im confused. Someone that has tried it says it works yet everyone on here that hasnt tried it says it cant work. ODD! Id suggest against the act 6 puck but for under 400whp I dont see why the rmr disc would not hold up. Just my 2 cents. I myself just ordered the act street/strip setup. I too wanted to save some money, but I figure if Im going to take all this time to pull my car apart I might as well atleast do the full ACT setup. i had this setup on my type r integra and it broke axles all the time. Hopefully I dont have the same problem with this car. Ill be pissed and Im sure the dealership will love me too.

 

Hmmmmmmmmmmm ahh well. I guess different peoples clutch goes out different ways I had like 49XXX on my clutch b4 it started to go out. But ah well.

 

Interesting views. Let me try and shed a little light on the subject.

First of all, our puck discs will hold about 30% more than a typical organic friction material because of a 30% increase in friction. This friction is what makes the disc harsh engaging, unless under high load. If you try to baby it, it chatters worse. If you drive it like it's stolen, then you can get it to engage smooth. Some cars are worse than others.

Springs vs no springs. ACT doesn't make spring centered discs... yet. Why haven't we up to this point? Answer: In racing, there is not much need for it. Most people believe that the springs help to prevent chatter. Not true. In many cases, chatter is worse with spring versus solid. Some feel that the springs are used to reduce driveline shock. Only partially true. The primary reason for springs is to reduce torsional vibrations that make the transmission noisy. In most cases, the spring bottom out way too soon to significantly reduce shock.

Our thoughts were, in racing who cares about noise? We were more concerned about the weight of the disc affecting how fast you can shift and the wear on syncros. For street use, chatter may increase with springs. In drag racing shifting is slower with springs. On many poorly designed spring centered discs, the springs end up getting beaten out of the hub and causing clutch malfunction.

However, on racing transmissions that have softer gears and occasionally in road or rally racing, we have seen improvements in transmission life from properly design spring center discs. Solid center discs tend to see a more spline wear on the disc hub than spring center discs. They tend to cause tranmission noise because the lack of torsioning dampening.

When we originally made race discs, they were only meant for racing (mostly drag racing). They work really well for that purpose. But over the years we have seen them used on street cars and road race cars, and other applications that really may be better served with a spring center. It also depends on what you are willing to accept the tradeoffs of more chatter and slower shifting. But because we are seeing a growing need, we are going to release spring center discs in the coming months. I will spare the advertising but I think you guys will like them.

Back to the original question. Is it a good idea to run our puck with the stock pressure plate? You will get 30% more torque capacity, better durability, and quick shifting, but the tradeoffs are noise, chatter, and short clutch life (because of disc spline wear). We usually recommend the HDSS clutch (Heavy Duty pressure plate, Performance Street disc). The street disc doesn't have these tradeoffs, but you would need to use the ACT pressure plate to get the higher torque capacity. The higher clamp load will give you the added torque capacity without having to raise the coefficient of friction.

If you are making big power (like Turbotrix 9 sec. car) then you combine the two, higher friction and higher clamp load. Sorry for the long explanation.

 

Nice!
Thanks For That Explaination!