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Old 07-10-2002, 09:15 AM   #1
giulio
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Question Best aftermarket clutch?

Hi everyone,

I'm in the market for a new clutch. What's you're opinion on the best one to get?
Currently I have an ACT... for about 40k miles.

When the drivetrain heats up (sitting in traffic) the clutch loses it's pressure. The clutch dis/engages with the pedal very low to the floor. after a while it wont disnegage at all. I have to keep a foot on the break to hold the car in place, like an auto! If i take it out of 1st gear- i'll never get it back in. I have to revmatch my engine to ground speed to shift gears.

It's not a hydraulic problem. I replaced both the slave and master cylinders, bled the line, etc.

ACT again? Exedy? BPM? Clutchmasters? Other? figure 200~250hp.

Thanks in advance,
giulio
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Old 07-10-2002, 10:34 AM   #2
8Complex

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Sounds like a hydraulic problem, man. I know you replaced stuff, but there is something still wrong.
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Old 07-10-2002, 10:40 AM   #3
MadMax
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I like to know too, as my stock is about to melt.


MadMax
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Old 07-10-2002, 12:04 PM   #4
kastle
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Most people are using either the ACT or the Clutchmasters. I had the clutchmasters stage III, but then moved up to a AP Racing Group N clutch for the STi V4 tranny that is going in.

I think you can go with either and be very happy.
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Old 07-10-2002, 12:12 PM   #5
WRC 555
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I'm running the ACT/Fidanza combo right now. I've only put about 1000 miles though. I did and still have trouble going into 1st once in a while. To remedy this I double clutch and it goes in about 90% of the time with no grinding. The ACT is a much better improvement over the stock clutch though..no more chattering so far.
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Old 07-10-2002, 12:45 PM   #6
Aphex
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I got a Clutchnet clutch from a friend that never put it in before he sold his RS, and an ISR lightweight flywheel. still waiting to put them in though.

the clutchnet should prove a little easier on the tranny than the ACT tranny shatterer. sprung hub as well. hopefully it won't kill my leg, and drivability with the lightweight flywheel wont' be too bad. fingers crossed, ha ha ha.
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Old 07-10-2002, 01:07 PM   #7
MadMax
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See alot of you guys have turbos, both giulio and myself are running s/c and we product gobs of torgue at super low rpm ranges. I could prob start in second gear from a stop if i wanted, not that i will try it.

So I think we are looking for something that will not
a. kill the trannie
b. Provide good drivablity


I haven't tried driving an RS with an act clutch yet, so i do not know how much effort it takes to push in the clutch pedal. But I hear it can become a pita with constant engage/disgage as in when sitting in traffic.

I'm looking for something that can hold about 250-300 hp.

Not sure if i need the lighten flywheel either.

MadMax
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Old 07-10-2002, 03:05 PM   #8
Chav
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Has anyone tried the clutch that Larry sells?
http://www.imprezars.com/product2.htm#clutchfly

Quote:
The Exedy Clutch has 40% more clamping power than the stock plate and should hold 350-400hp easily. The complete clutch, disc, pressure plate and above flywheel weighs only 26 lbs (stock flywheel alone weighs 25 lbs). Exedy manufactures the stock friction disc, which I use with an ACT pressure plate and it is holding 360+ crank HP so far. I'd get the exedy if I didn't already have an ACT.
I'm looking to buy a new clutch as well. Issues in no particular order are how long will it last, how hard will it be to operate, and will it engage like stock inorder to save the tranny.

-Chav
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Old 07-10-2002, 03:39 PM   #9
christoph1371
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As for Driveablity, I stay with Exedy for flywheel and clutch. It is smooth and feels softer than other setups but it definatly kicks in when you need it.

I have had a few incidents with the JUN flywheel being unbalanced. Therefore I will not buy it again.

The ACT is rough and dirty. It does the job...and you feel it. That can be good or bad, depends on what you are looking for.
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Old 07-10-2002, 04:13 PM   #10
WRC 555
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Actually the pedal feel on my ACT street setup is not bad at all. Its definitely stiffer than the stock clutch but not a left leg work out. I actually like the feel a lot. Every car is different I guess. My friend's RX-7 with the ACT street is much stiffer than mine.
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Old 07-10-2002, 11:49 PM   #11
yebokmj
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I kind of remember reading or someone haveing a similar problem to what you described with your clutch. If I rember properly it had something to do with the location of the clutch master cyclinder and the fact that the IC was on top of it. In the WRX the clutch master cyclinder is located else where. The problem only arises in traffic because the IC gets heat soak and helps to heat up the clutch fluid to boiling point causing the problems you described. Again I am saying this is what I remember a search or asking about that specific problem might result in more info and even a solution.
Joshua
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Old 07-10-2002, 11:56 PM   #12
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Mad Max - I drive guilios car...suffice it to say that while the downlow power is nice, it really is much more than a stock 2.5 RS,a dn certainly has loads less pull than my tubro 2.5 does.

This is not a hydraulic issue at all...it is a bad pressure plate. if you felt the clutch (it simply feels wrong...way wrong, even before it gets hot)

The ACT in my RS had slightly harder pedal; pressure than stock...as should everyones. Anyone who does not, probably has a bad isntall...more than likely the flywheel was not cut properly or clutch not bled enough

The only 4 clutches I know that work on a RS are:

Exedy: none I could find in the country at the moment

ACT: easy to get, he got 40k out of it and it has never felt right according to giulio..I used it, got about 15k out of it (longest to date in my car before I swapped trannies)

Clutchmasters: never used their stuff, don't sell them

Unorthodox: stay far away....I went through 2 in about 1k miles....cannot take heat at all

adam
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Old 07-11-2002, 12:17 AM   #13
STiTuner
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Isn't there an STi 6 puck disck that works? it will match to the RS flywheel, trnny, pressureplate and so forth?

Brad
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Old 07-11-2002, 12:36 AM   #14
Gerry
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This is the clutch you all need...Exedy Twin disk...A little expensive but it will be the last clutch you will buy for a long long time....Gerry
Brad..I e-mailed you...
Attached Images
File Type: jpg clutch.jpg (22.1 KB, 270 views)
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Old 07-11-2002, 01:33 AM   #15
Chav
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Details Gerry? Have you used it? Reviews? Where to buy? Holding power? Kind of Engagement? Thanks! It looks like a nice peice.

-Chav
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Old 07-11-2002, 10:14 AM   #16
HRE | giulio
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Thanks for checking up on me adam.
If it's possible I'd like to get the exedy setup.

My brother (mechanic for almost 20 yrs, upstate) also mentioned that it might be hydro fluid being near-boil. I'm going to look into that this weekend. I don't have an intercooler, but the sc is almost touching the slave cly, and a lot of the line is very close also. I'm going to put in better fluid (dot 5?) and see what happens.

Still I think it's something in the clutch heating up and losing strength. I have a single high flow cat on the MRT headers... right under the tranny. I think it's getting really hot and just heating up the tranny.

You're right it doesnt have much pull... no intercooler =(
I don't mind though... it saves on tranny $$!!

It's getting really bad. I cant go 20 mins anywhere without it being a problem.
This sucks I'm supposed to be showing my fiance around the the island sunday!!

I hate car problems.
g
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Old 07-11-2002, 11:11 AM   #17
MadMax
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Quote:
Originally posted by Z1 Performance
Mad Max - I drive guilios car...suffice it to say that while the downlow power is nice, it really is much more than a stock 2.5 RS,a dn certainly has loads less pull than my tubro 2.5 does.
Z-1
I've only seen guilios car once. But as far as my setup. I have up to 6-7 psi all the way to readline. I also have ic and tec-II. Right now I'm actually detune to be on the safe side and prob could get another 20hp if the car was turned more aggresively. Point being, I can slip the stock clutch in any gear. Granted thats not saying much as the stock is weak. On the other hand if I drive without going into boost, the stock holds up fine. So I do not think I will have the heat soak issue. My issue is power is too much for clutch.

So from the posts, most people have Act and they last awhile depending on driving styles. They make traffic driving harder.

Not many people have Exedy, so reviews are low and finding them in the states might be hard. Plus they cost more.

So the two we are left with are Act and Clutchmasters. People both say they are great.

I just want something that will handle the hp, but be safe enough for the trannie.

Maybe i should just save for a v4/5 tranny.

Does anyone have Exedy clutch and flywheel in stock?

MadMax
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Old 07-11-2002, 03:40 PM   #18
giulio
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I'm only running 5spi. i dont think it's worth $250 for a new pulley for just one more psi (is it?).
I might be taking it off to sell in the fall anyway. Getting married =p
g
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Old 07-11-2002, 03:46 PM   #19
MadMax
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Quote:
Originally posted by giulio
I'm only running 5spi. i dont think it's worth $250 for a new pulley for just one more psi (is it?).
I might be taking it off to sell in the fall anyway. Getting married =p
g
Where where you going to get the new pulley from? If you have the same eaton blower as me, i was told they can do upto 9-10 psi depending on pulley.

If your getting married then sell it, cause they cars suck up $$$ fast. hehe

oh and congrats too.

MadMax
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Old 07-11-2002, 04:29 PM   #20
Hojai
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i am using the ACT clutch(street) with stock flywheel and right now i have driven it for about 7k Kms and include 2 track days.
it's still good but after the first two sessons on the track day, the clutch pedal becomes softer. It probably due to the temp of the fluid.
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Old 07-11-2002, 05:21 PM   #21
christoph1371
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I have one set of exide: clutch and flywheel which is going into another conversion this weekend (a 99 legacy gt). I can get more sets, however there is a BIG back order and this thing called the atlantic that holds this stuff up
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Old 07-11-2002, 05:40 PM   #22
MadMax
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christoph1371 how much do they cost for rs?

MadMax
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Old 07-11-2002, 05:47 PM   #23
giulio
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Max,
I have a different setup i think. the compressor is an eaton M62 (pretty sure). I have a small pulley on it already, any smaller and the belt would get ripped - too small an arc. Mine is a top mount/no intercooler (only option for DOHC at the time). i thought yours was the side kit, intercooled.
The overdriven/lightened crank pulley is made by unorthodox. They say 1~2 psi gain from it. If it cant guarantee 2 psi... i donno... doesnt sound like it's worth the money for me. And if it does do 2psi more, then i'd surely have to get larger injectors, maybe fuel rails, worry more about detonation, etc etc. it's a money pit, man! haha.

Thanks for the congrats! When time comes for a new car I might do this...
get a $10k hyundai (10 yr warranty), and import a STi motor/tranny/driveshafts to put in the RS. mmm!

Quote:
Originally posted by Hojai
i am using the ACT clutch(street) with stock flywheel and right now i have driven it for about 7k Kms and include 2 track days.
it's still good but after the first two sessons on the track day, the clutch pedal becomes softer. It probably due to the temp of the fluid.
I got 40k+ on mine. almost every day is a track day for me haha =)
I have the exedy 12lb flywheel, installed at the same time.

I've had 3 people in the business telling me it's a bad pressure plate. heating up and losing it's stiffness, not disengaging the clutch. Tomorrow morning i'm having the fluid swapped (damn that sounds good haha). So we'll see what that does. Then get a new clutch put in at Z1 that afternoon (crossing fingers)!

another guess is a crappy clutch disc - heating up and expanding. But i think that's ruled out by the clamy pedal feel.

Thanks chris. Adam@Z1 already ordered me a clutch. And I really can't wait any longer.

Thanks guys,
g
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Old 07-11-2002, 05:57 PM   #24
MadMax
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YAh mine is side mounted and IC. I have to measure the size of the pulley, but I think its about 3" diameter. How big is yours?
I think since mine is so far off the side i get more psi then yours since yours is top mounted. I dunno. hehe

As far as money pit, heck yah you are correct.
What clutch you getting and how much did you pay?


MadMax
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Old 07-11-2002, 07:04 PM   #25
christoph1371
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"This high performance flywheel Product is manufactured by Exedy USA and is available for the 95+ Impreza 2.2, 2.5, Legacy 2.5 and some 2.2, Forester 2.5. Email for specific applications. Pressure plate has 40% more clamping power than the stock plate. Complete clutch, disc, pressure plate and flywheel weighs 25 lbs. (stock flywheel alone weighs 26 lbs.).
Clutch is $379.95 + $19.95 S&H (S&H For US 48 States)
Flywheel is $550.00 + $19.95
Shipping/Handling
Both pieces as kit is $849.95 + $29.95"
as found on Subysports.com
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