I've had a twin in each of the 3 evo's I've owned... Each have held well over 40 or 50 launches without failing and handling over 400 ft lbs of torque during. I'd agree that triples are obviously better, but a twin works fine for pretty stout power levels.

 

I'm very impressed with the Comp clutch, then again, I'm only putting around 300 to the wheels, nothing insane like most of you guys in this thread. I've already done a dozen or so launches in a parking lot and it holds up extremely well.

It's all in the product and the install. If Kasey or a reputable shop like Motion Lab is doing the install, you can rest easy. If the product fails, Comp Clutch will stand behind their product.

I had the throwout bearing fail along with the disc cover because I had early production parts (that are now fixed). Comp Clutch not only replaced all defective parts free of charge, they also gave me free product worth $1000 to reimburse me for the install.

That's what I call SERVICE.

 

I'm going to put my Quartermaster to the test on my new setup. If it doesn't hold I plan to upgrade to the Exedy Triple.

 

From my experience save your money and get an exedy triple carbon.

 

To be honest man i would NEVER EVER run a 7.25" clutch on the street. I would SERIOUSLY consider selling it or trading it for a triple disc. 7.25 clutches are awesome for straight track use or drag racing for the fast revving and smooth shifting but are absolute nightmares in regular traffic and you will FOR SURE need a rebuild in 7-12k miles on it. We honestly prefer the exedy triples carbon for 700+hp cars and mettallic for people with 500-700 that drive it on the street with a SD no NOT HD pressure plate. The high clamp load on the HD make the triples and twins VERY VERY hard to slip and control when launching. A triple with a SD pressure plate is very easy to drive, almost like stock and is really predictable when launching the car and slipping the clutch out to find the right friction poiint. Hope this helps ya

 

^^^ yeap, triple carbon after 10,000 miles on 750hp car by exedy specs the clutch still had over 50% life on it and best thing it drove like stock

 

I already have the Quartermaster, and have already put a few miles on it before the build. I love it, even for street driving.

I've driven it for a 1000 miles or so already. The only thing I didn't like is it would stall with the A/C on, which won't be a problem with my new setup as the A/C is coming off. I love the "race" feel it has driving it around. I love the noises, the harshness, and best of all the ability to slam the gears as hard as I want.

 

it wont be too long before i will need to upgrade clutches. anybody running a lightned flywheel. talk to a couple guys who told me to stay away from them, but they own eclipses both fwd

 

I got a Gruppe-S lightened flywheel and its held up fine for over 4 years now.

 

any diiference in spool etc.

 

I agree with you, when I had the twin Disc Quartermaster it was great at launching it from 6K with 1.7 60' times. The downfall was it only lasted me 10 months and with 10K miles, if you remove the mileage of driving to Texas then the clutch wouldn't of even made it to 8K. I had a Love/Hate relation with the twin Quartermaster. It just sucked having to explain everytime when someone would say "Whats wrong with your car?" even stalling out while waiting in line at the base gate. I now have a Spec 3+ clutch which I love but I have not did any hard launching on it yet. But this Wednesday I will be testing it at ZMax if it doesn't rain.

 

I have the ACT prolite and it cause about a 200 rpm loss in spool. I gained this back from my HKS intake, so the effects are negated. With my hunk of shat exedy clutch it made launching and hill starts a difficult task(best of 1.89 60' vs a 1.79 on a worn out stock clutch ).

So I guess that doesn't tell you anything, but all in all I like it. The car revs better and feel more responsive. Just be careful with what clutch you pair it with.

 

Slight difference in spool... Harder to launch, but a little more rev happy. Especially up top. I've been driving this way for so long that I don't accurately remember how different the spool actually is.

 

okay thanks for the info fellas

 

So, it obviously depends on your targeted level of power and torque. My goals for my IX MR is525 hp and 475 lb-ft (that will probably max out the 6-speed). I do more road course work than drag strip and my car is a daily driver. My stock unit lasted until 29K miles. I went with the ACT Xtreme pressure plate and Prolite flywheel. I do fairly significant launches and have had no issues - am now at 48K miles. The flywheel was 4 lb 2 oz lighter than stock and the pressure plate was 2 lb 11 oz lighter than stock, so I pulled 6 lb 13 oz off the rotating mass. My before and after dyno results, on Keith's Mustang, were 289 whp and 283 wtq before, with a K&N and grounding kit/wires, and 303 whp and 291 wtq after with UR pulleys, ignition amp and the lightweight clutch and flywheel. Since my goals are fairly modest I didn't want the extra weight of twin or more discs. My spool was not affected - 3800 rpm.
Obviously I'm just at the start of my mods. Since then I've learned to do my own ECU tuning, boost tuning and added 1 psi of boost. Am at just over 340 wph and 299 wtq. Now that I know basics of how to do my ECU tuning (took me four months the first time) it's time to start adding the real intake and exhaust mods.