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Old 02-06-2002, 12:12 AM   #1
twobaru
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2002 Subaru WRX
Blue

Exclamation nothing wrong with the clutch!

We bought our WRX in March of last year and have loved every one of the over 23,000(!) miles we have driven it. But last week we had just about had it with our local dealership telling us (for the fourth time) our severely chattering clutch was "unduplicatable", especially since our car does it pretty consistently for us. We have been back and forth with them on the issue since the car had 4,000 miles on it. After much research and many months of asking anyone who would listen, just today we got in touch with a pro Subaru race shop that had the answer. THE CAR WAS DESIGNED AND SHIPPED WITH A COMPETITION-TYPE CLUTCH! All WRXs have a kevlar clutch disc, which just like in a racecar, is subject to harmonic vibrations set up by the driveline at low RPMs, and therefore is not a problem. If anything, it makes me prouder of the car, but it is a little depressing that nobody at SOA had the wherewithal to tell us this. It appears our dealer had no knowledge of this until I told them today. Enjoy your car, there's nothing wrong with it!
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Old 02-06-2002, 12:52 AM   #2
NiceguyOnSubySt
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Default Re: nothing wrong with the clutch!

Quote:
Originally posted by twobaru
THE CAR WAS DESIGNED AND SHIPPED WITH A COMPETITION-TYPE CLUTCH!
I knew it! That must be the same pro Subaru race shop that explained to me about how our RE92's were actually made of an advanced R compound specially designed to mimic the crappy qualities of an everyday all season radial! Gee, $25k wasn't too much to pay after all...I love Subaru and my WRX!
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Old 02-06-2002, 11:02 AM   #3
Avey
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Some days the clutch is perfect, absolutely smooth. Sometimes the engine will shake violently, even when the engine has just finished warming up. The clutch sometimes feels smooth even though is freezing outside and sometimes when it's like 5 C out I get the shudder. I don't launch the car, and am pretty easy on the clutch. When the clutch feels smooth, it feels numb and doesn't give me any feed back, 90 % of the time I get a slight vibration, which I am used to, but when I get a violent shudder, it just doesn't feel right. I got the shudder often when the car had about 2000 Km, now I have about 13000 KM and I rarely get it.
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Old 02-06-2002, 05:58 PM   #4
Red Rocket
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'97 4Runner

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B.S.

There is no way I belive that for a second.

- Why have so many people burned out their clutches already?
- Why is it a relatively smooth (not grippy) clutch?
- Why the H--L did they change the clutch component part ##'s for July 2001, to stop the rattle.

Idiot!

Kevin
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Old 02-06-2002, 08:49 PM   #5
gtguy
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Gosh, what's up with the hostility? Just because people have been burning out clutches, doesn't mean this person's information can be inaccurate. He's also a fellow i-Clubber, whom I don't think deserves to be called an idiot.

On the other hand, we certainly would have heard about it, had our WRXes had clutches as nifty as the one described.

On the other other hand, I believe that a kevlar clutch disc does not, of necessity, mean a grippy clutch, and perhaps they changed the clutch component parts to something more organic, so that people would stop complaining.

Just some thoughts.

Kevin
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Old 02-07-2002, 02:59 PM   #6
twobaru
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Angry Idiot?

I went to a lot of trouble to share what I thought would be good news to the people of i-club, (by the way, I am a woman) and although you may not agree with me, certainly you can understand my intent, which was to hopefully allay some fears people have about their clutches. Maybe my info is right, maybe it's wrong, but I certainly meant no one harm. Although I don't know whomever called me an idiot, I am hurt and insulted and I will no never again post on this board.
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Old 02-07-2002, 04:02 PM   #7
Red Rocket
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Talking Welcome to the club!

I'm sorry I called you an idiot, that wasn't very nice.

I've dealt with a rattling clutch from the beginning (august) and have been spending a great deal of time over the past month or so (after the holidays) trying to get mine fixed. Bailey was able to point to an obvious fix in december, thanks to a very helpful dealer. I just got a new clutch, which I belived to be the wrong (old) one, instaid of the new one other people have been getting. Now, due to addtional information from both here and Subaru, it seems I may have something else making the noise, who knows. At least at this point, I feel that my dealer and SOA are on board to fix the problem, it IS NOT A NORMAL NOISE.

In addition, the wrx has nowhere near a "competion type clutch". Subaru itself offers a beefed up STI clutch, and most upgade (still non-racing) aftermarket clutches will readily break your transmisson from excess shock. As a mechanical engineer, it would take a bit of evidence to convince me that ANY clutch friction material would have an insurmountable harmonic problem - something that couldn't be overcome by proper design of the disc.

When you post something that doesn't make sense for multiple reasons, expect to get flamed. I was especially worked up yesterday, and I aplogise for taking it out on you.

Don't belive everything you hear from shops or here.

Kevin
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Old 02-07-2002, 04:28 PM   #8
Sergeant_V
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Yes, welcome. Not everyone gets as worked up as Red Rocket did about what happens on this board. He was just having a bad day.
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Old 02-07-2002, 04:29 PM   #9
gtguy
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I dunno Kevin (from another Kevin ). Flaming is one thing, but calling someone an idiot is another matter altogether. I don't think I would come back either, though I hope that she does.

I guess that I don't know enough about the WRX's clutch to know whether it's competition-type or not. "Competition-type" could mean a lot of things, though.

Kevin
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Old 02-07-2002, 04:40 PM   #10
silverbullit
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Why dont you go find out where she lives and kick her dog while you're at it. I mean she definately deserves it after insulting your obviously superior intelligence with such a stupid post.

Quote:

B.S.

There is no way I belive that for a second.

- Why have so many people burned out their clutches already?
- Why is it a relatively smooth (not grippy) clutch?
- Why the H--L did they change the clutch component part ##'s for July 2001, to stop the rattle.

Idiot!

Kevin
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Old 02-07-2002, 07:52 PM   #11
NightmareOnSubySt
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black

Default Re: Re: nothing wrong with the clutch!

Quote:
Originally posted by NiceguyOnSubySt
I knew it! That must be the same pro Subaru race shop that explained to me about how our RE92's were actually made of an advanced R compound specially designed to mimic the crappy qualities of an everyday all season radial! Gee, $25k wasn't too much to pay after all...I love Subaru and my WRX!
Hello twobaru, welcome to I-Club. If I may speak for Niceguy, we appologize for our post. Really thought this was meant to be a sarcastic post based on our (yes, we are victims too) "clutch shudder" frustrations. Friends?
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Old 02-08-2002, 02:25 PM   #12
steve
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I now have 25,ooo miles on my WRX.
Does anyone think it's time to change my headlight fluid.

j/k
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Old 03-11-2002, 09:52 PM   #13
SubiDo
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Back in the early 90's I had a buddy who was a proud owner of a Ford Mustang LX 5.0. I can confirm what is said in this tread is true. The stock clutch was fine as far as shutter until the day it was replaced with a centerforce dual-friction, and then the shutter began. In the beginning, we weren't sure what actually caused it, but we were told from other racers that heavy pressure plates with composite materials or potentially a misalignment of the clutch against the flywheel. This can be confirmed by removing the tranny (which we did) and inspecting the flywheel for hot spots. You know what, there wasn't any. A whole lot of speculation at first of a rear main seal leak, etc. When we originally replaced the clutch, I also replaced the rear main seal, throw out bearing, input shaft (Ford motorsport version), flywheel (aluminum and machined), clutch fork and Centerforce clutch (pretty much everything). It was a $600 excursion. After remachining the flywheel (for good measure) and checking for warp we put it back together. Same old shutter and we accepted this as normal. The car ran 11.40's with the ATI procharger and pulled the front tires 2 feet at launch. No shutter on those hard launchs . But it would shutter ALL the time on the street in first gear under easy driving.

This being said, I believe that Subaru is putting in some heavy clutches into the WRXs. I just got my WRX today, but I assume it is a hydrolic clutch, which will make it hard for you to REALLY know how heavy the pressure plate really is. In my buddy's car (manual clutch) you had to have a leg like a body builder to push that thing in.
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Old 03-12-2002, 12:24 AM   #14
ANZAC_1915
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The clutch in the WRX is pretty soft. It might have a fair amount of clamping force but it is nothing like the severe clutch fitted in the 22B for example.

I also think it feels a little softer in takeup than the previous gen WRX.

Glenn
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Old 03-12-2002, 12:57 AM   #15
Weedy
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2002 WRX 2.5L Hybrid
WRB

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Just for some interesting info, the 22B used a triple plate ceramic clutch. There were numerous problems (from what I heard) with that car eating gearboxes alive! The car was definitely the ultimate Impreza, although it wasn't exactly a daily driver car. Damn, I would do almost anything to have one though!
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Old 03-12-2002, 07:09 AM   #16
SubiDo
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I guess the point I am trying to make is this; If this shutter was a bad type, you should also get slippage too.

I am curious, has anyone gotten their clutch replaced by Subaru and the problem has went away?
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Old 03-12-2002, 09:27 PM   #17
soma
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I had my clutch replaced and it has been great; no problems since. I just mentioned the shuddering to my dealer who said he would talk to the SOA rep. I did have one of the first WRXs (March 2001).
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