Nuked my factory clutch at the strip the other night, surprise, surprise. Anybody running Exedy’s organic twin disc?

 

do you really need a twin disk?

 

ACT HD pressure plate/street disc combo is smooth and solid. Slight difference over stock, but you quickly get used to it. It's been the best "upgraded" clutch I have put in any car, and a really good option if you still DD your car. https://www.maperformance.com/produc...BoCwAYQAvD_BwE

 

OE drivability, pedal feel, engagement with increasing holding capacity to 500lb/ft. Thanks for sharing your experience with using Exedy’s twin disc set up.

 

I’ve been scoping the ACT as well, people seem to really like them. I get leery of clutches that tote HD pressure plates as a key selling point. The last car I put a clutch w/ HDPP (centerforce dual friction) got to be a nightmare in traffic but I guess sacrifices will be in the quest for speed.

 

The exedy will not have the longevity of an ACT HD clutch. And due to the organic material still won't like being launched. You need to asses your needs before throwing money away on an unnecessary clutch. And basically all that matter is the use of the car, because the ACT HD organic clutch will handle more torque than the stock rods.

 

I was concerned about Exedy’s clutch longevity and holding capacity especially under a harsh drag launch with the friction material being organic so I call Exedy. The guy in the tech dept was explaining the reasoning behind using a twin disc set and as long as the torque was kept under 500@flywheel (for organic) he didn’t see or have an issue with launching on stickies. With that being said it would be reasonable to assume that longevity will be negatively impacted with any style of aggressive driving on nearly all clutches but by how much? And beside he works for Exedy. I could purchase a clutch kit that would with stand the riggers of drag launches and destroy it with daily driving or buy the oe clutch for its street manners and destroy it drag racing. The difficulty is striking that perfect balance which varies with every car. Using a 400mm clutch disc with a mild friction material seems like a striking that dichotomy right in the middle.

Why do you think ACT’s organic clutches will hold to drag racing and Exedy won’t? I’ve not used either brand before.

 

You haven't mentioned drag racing until now.

If you want s clutch that lasts, you need the HD ceramic twin. Don't mess around with organic clutches for launching the car. They don't last.

 

First post: “at the strip”, I figured that anyone reading that would have understood drag racing.

Thanks, I’ll keep that in mind about the cerametallic clutches.

 

Living in Vegas, I completely glossed over it...

 

People have been using the ACT HD for almost twenty years at this point. When people say it's probably the best daily driving clutch that still handles a good amount of power, they just might be telling you the truth.

I use the ACT HD in my Evo 10 that produces 640whp. Rev to 8600. Shifts are great. No lock out. Stiffer than stock like any good clutch but engagement, noise, etc is like OEM. Track the car fine. I'm probably right on the edge of what the ACT HD can handle. So I'm pretty sure it would be just fine for your needs.

That said, if you are car bowling, you will probably destroy it. Also I would start putting money away for when you split open the rear AYC diff.

 

LOL... I could see that

 

I'm not arguing that the mass don't like ACT or it not a good DD clutch, I'm simply asking why? You might have a track car that gets driven hard, the clutch has stood up to many seasons of abuse and now you won't buy anything else or the daily driver that has 100k miles on the same clutch disks. To say X clutch is a crap don't buy it or X clutch is great without any sort of validation to accompany the statement is dumb. Someone might be using a clutch that's the prefect daily driver and hold a ton power but chatters like a 3 year old with pots and pans, manufacture's website read "increased clutch chatter at idle". While that clutch meets the needs, it would annoy the **** out of me. I've found that I get a better sense of what the manufacture publishes about a product when I read/hear comments about the end users experience. Parts that are simple to replace or take little work to replace, less concerned. Parts that I'm going to spend all day replacing and remove half the car to do so are a different story.

 

My Evo makes 500whp+ on a mustang dyno and I run the ClutchMasters fx400 w/aluminum flywheel. No chatter at all, and clutch pedal feels very oem. I abuse my car, and the clutch holds just fine. I really wanted to avoid chatter. Upgraded the clutch/flywheel on my old 350z and couldn't stand the chatter it produced. Friend of mine has an Evo8 with the same clutch, runs around 450whp, and is also very happy. Pedal feels way different and is really stiff on the older evo's. The X's have a pedal helper spring that makes all the difference.

 

Just wondering how much you spent on the clutchmaster plus install? My clutch just started slipping and I am in need of replacement options.