Your friend sounds like mine. I have white evo and used to have ACT and having problem shifting above 6500 RPM too. I have Exedy twin now and will see if it is the clutch this weekend.

 

Probably isnt installed correctly, or not adjusted properly. There are hundreds of guys running that clutch w/o that problem though.

 

Yeah! But few went to the drag and shift like a maniac 3 times at over 7000 RPM. I did the adjustment too. I'm not saying it's the clutch but just guess based on some conditions. It's fine for regular street driving.

 

I would assume the adjustment isnt correct on the clutch. I find it VERY hard to believe that it is slipping. The stock clutch would handle your power fine and wouldnt slip after 20k miles unles you drive like a moron. Check the adjustment on it before you do anything.

As for ACT, I have heard more and more bad stories about them... apparently they warp alot. I have one and dont really like it. Also, a 4 puck clutch is WAY too much for your car. People like John Shepherd need one... people like me and you dont. I have a street disc (A full disc) and it is holding 500hp ok.

The idea of a clutch is to be sorta like a breaker switch for the driveline. It SHOULD slip a little bit to save the drivetrain. Especially with drivers like us (Not Curt Brown and Shepherd) the clutch will save our cars when we screw up launches and such. Personally I am kinda tired of reading all these tranny failures, TC failures and everything else... The ONLY reason people are destroying these is from crappy driving.... simple. I cant drive well nor claim to drive well but I havent destroyed anything yet. I thought I did and spent around 2k in trying to fix the 'problem' which wasnt anything really anyways but thats not the point. I think too many people think launching a car is revving it high and dumping the clutch. These trannies and transfer cases should easiler hold 400hp with no problem.

Anyways, sorry my ramblings but thats my opionion. I think you should adjust your clutch... i doubt its slipping. If there is a problem with it, when you change the clutch try to find something that is in your HP range. If you make 300ft lbs of torque find something that holds slightly above that and get a full disc.... there is no reason for a puck clutch unless you are really trying to race the hell out of it. Mine holds fine and I am making plenty of power. Technically I am pushing th envelope on the clutch rating but it is still working for me and I beat the hell out of it.

Dont assume that there is a 'best' clutch for a car... they have ratings for reasons. Some people need the higher TQ capacity, some people are going for perfect passes without clutch slippage (And dont care if they destroy stuff along the way). And the biggest thing to learn is.,.. most people on this forum dont know what they are talking about. Learn the ones that do and only listen to them. 'Gears' knows his stuff... ask him what he thinks you should do and he will happily help ya out.

Once again, sorry for sounding like an *** but I just need to vent sometimes and i hate the whole, I destroyed my clutch or drivetrain topics because most of it is either wrong or thier own for driving retarded. I drive retarded and cant launch of shift for crap and mine still holds fine.. most of these people must REALLY drive bad. Oh well... Good luck and get something that is more suited towards your car

 

I hate to further the hijack, but how long should a competent shop take to adjust the clutch? Is it really the same amount of time as it is for the install, basically? Thanks.

 

Thats funny - after reading a god awful amount of threads, Ive found many more disappointed twin disc owners than ACT owners. That being said - there are TONS more ACT users. Ive seen at least 4 Exedy people complaining about numerous problems, and not THAT many people have this $1200-1500 clutch.. Id rather spend $450 (what I paid) for it and see how it does. Ive heard tons of good things about the clutch, especially from people who installed it correctly. (that goes for exedy too) there are many people who swear by it.

 

act

 

Rps

 

Carbon Clutch

 

You saying I drive like a moron?

My stocker began slipping at 16K miles. I did one season of autox with the car, launching it hard with most runs. I've got 25 yrs of manual tranny experience and this is the first car I've owned or autox'd that has lost a clutch. The only reason this car exists is for hard driving. If you can't launch this puppy then you've basically got a rough-riding, gas-guzzling POS.

BTW - I've got an Exedy twin disc and am having a bunch of problems after 800 miles with it. I'll find out in 2 wks whether it's the clutch or the Mitsu dealer's installation that's the root of the problems. I certainly agree with the poster who said try the ACT first before laying out big money on an Exedy. I'm kicking myself for not having followed that advice.

 

I'm not sure I would recommend that clutch. My buddy just went through his in about 8K miles. He did launch it quite a few times though.

 

Check out this poll for more opinions:
https://www.evolutionm.net/forums/sh...d.php?t=126768

 

2 quick updates:

My Exedy clutch problems literally disappeared after about 20 minutes stuck in stop-n-go traffic on I-495 outside of Boston. Not sure why, but I'm going to have it check out anyway. Still engages early on rare occasion, but clutch drag is gone.

I talked with several DSM vets at the Boston BMWCCA autox, and they all agreed - you can try any number of clutches, but you'll always end up coming back to ACT from a price/performance perspective.

 

anything under 500 whp, i'd go with ACT

 

ACT, 20,000 on mine and still holds fine.