what i'm wondering is how many people are running a single disk setup of some sort making 500whp or more??? if so what kind pressure plate, disk ect.???
thoughts on this would be great also...
thanks

 

Horsepower has no bearing on the operation of a clutch... torque does.

However, to answer your question, I'll be using an ACT XTSS 3600 for my 500whp+ setup.

 

clutches are rated in torque not horsepower. So you need to figure out how much torque you make/plan to make with your setup. Reminder, it's flywheel torque you're interested in, not wheel torque.

The organic disc, upgraded pressure plates that most of the manufacturers sell are right around 500 ft. lbs. Step up to a ceramic disc and the holding capacity goes up by varying degrees. ACT, Exedy and RPS all have single disc organic setups that will hold about 500 ft. lbs. of torque.

 

i would think i will make about 400 to 500 flywheel ft/lbs i was thinking a 2900 act with a 6puck disk but i'm open for what has worked for you guys.. thanks again

 

For street use we recommend a street clutch. You say 400-500 ftlbs which makes a night and day difference. Up to 450 ftlbs, the organic should be fine for most applications. For 500 ftlbs, the organic would be fine for some applications.

The puck is more of a race clutch. Is that what you are looking for? The solid center puck will give more heat tolerance and quicker shifting, but noise, possibly quicker spline wear and harsh engagement (chatter) are tradeoffs. Spring center race disc will give slower shifting than solid center, even more chatter, but won't be as noisy, and have better spline life.

 

Does ACT make any clutch over 3200ib for the DSM? I was told thats the highest they make. Whats the torque holding capability of that clutch? Whats the XTSS 3600? Is that for the evo?

 

The numbers are referring to the clamp load. The EVO clutch can support much more clamp load than the DSM clutch and so the Xtreme is about 3600lbs instead of 2600 like it is for the DSM. Sure we could make a 4000lb DSM clutch, but it creates too many other concerns in the system such as travel, pedal effort, clutch life, etc.

 

thanks for your response so you are saying your 3600 w/ a street disk will be good correct?? i drag race a good amount but i'm willing to change my clutch/disk one time a year if i have to for better daily driving characteristics. who sells the 3600??? thanks for your input act man

 

What I am saying is that it is a hard call. Back when both John Shepherd and Jeff Hill raced DSM's that were really similar in power, they had totally different experiences on clutches. John ran a street disc all the way into 8's and wouldn't run anything but a street disc. On the other hand Jeff had to run the puck disc just to get it to live running 9's and he has had great success with it (EVO too). The difference is driving style. First you have to decide exactly how much power you are going to have and how you plan to use it. The Xtreme (3600lb) pressure plate with the street disc will hold the power, but adjustment becomes more of an issue. My only concern is that you may not have enough adjustment to prevent high rpm lockout if you run the street disc. We don't have enough feedback to know for sure. The ones we have out racing and have had feedback from are all running the 6 puck. I don't know who has them in stock, but I could have my sales guys look it up for you. Drop me an email and I will forward the inquiry to them and they can contact you.

 

So would your standard street 2900 evo kit be good for a high 10 second evo?

thanks

 

For some definitely, for others definitely not. The clutch should hold high 10 second power. But driving technique is most critical when drag racing. If someone with a 10 second car likes to slip it out of the hole from 7000rpm and still uses the restrictor as well, the clutch will be lucky to last two passes (as will most clutches).

It also depends on frequency. If you live your life "1/4 mile at a time", you probably need a race clutch. Especially if you "double clutch like you should" (just kidding).

 

LOL! you forgot "Granny shifting" (joke)

 

thank you for your response i will email you tonight with my info the last thing i want is a lockout problem so maybe i will go with the lighter pressure plate & the 6 puck sprung disk.. thanks again for your info on the subject.

 

Do you have a phone number where you can be reached?

thanks

 

Call the shop at 661-940-7555, ext 111
I don't usually take calls if I am away from my desk and out in the shop but I return messages promptly.