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Old 04-29-2007, 11:43 AM   #1
snow111
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Default What are the signs you need a new clutch

Hi,

Need some advice/help. I have 2002 TS wagon, no significant mods except coilovers, front/ rear strut bars, and upgraded WRX mags. I had the clutch replaced about 30k under factory warranty, it was chattering a lot when the car was driven cold. After that, the chattering stopped, and no problems.

Now I have 64k, and yesterday when i accelerated hard in 3rd and 4th gears, i saw the revs go from 3g's- about 4 or 5 g's but did not really feel the car accelerating.

Are my worst fears coming true? If I do need a new clutch, do you know whether Subaru would replace another clutch for me, as this one only has about 34k's on it? I don't drive hard much at all, mostly just all city driving, to and from work. Could all that downtown driving wear out your clutch?

Any advice as always is appreciated, from the VIC.
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Old 04-29-2007, 11:47 AM   #2
FNR32
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Well that was the clutch slipping im sure, but as to if u need another one, im not sure. It could just be glazed and will go away once it warms up (happened in my wrx a few times) or it could be screwed. I don't think u can get another clutch under warranty, but it never hurts to ask.
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Old 04-29-2007, 11:57 AM   #3
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see below

Last edited by snow111; 04-29-2007 at 12:03 PM. Reason: merge threads
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Old 04-29-2007, 12:03 PM   #4
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Quote:
Originally Posted by FNR32 View Post
Well that was the clutch slipping im sure, but as to if u need another one, im not sure. It could just be glazed and will go away once it warms up (happened in my wrx a few times) or it could be screwed. I don't think u can get another clutch under warranty, but it never hurts to ask.
hey thx. im a newby, what do u mean by glazed? is there a coating on it like a donut? :-)


Another question, are suby clutches weaker than compared to other cars. I think I read somewhere if you are buying an impreza, the automatic tranny's the better way to go.
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Old 04-29-2007, 12:18 PM   #5
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Originally Posted by snow111 View Post
Another question, are suby clutches weaker than compared to other cars. I think I read somewhere if you are buying an impreza, the automatic tranny's the better way to go.
There's nothing wrong with the stock Impreza clutch -- under normal driving, they should last a lot more than 34,000 km. Driving style has a lot to do with clutch wear. It's possible to kill a clutch in 1 km if it's overheated enough. Slipping the clutch with a lot of revs, say on a hard launch, or a hill start will cause a lot of wear to the clutch.

I don't know where you heard that auto Imprezas are better. Autos are for people that don't have use of their left leg.
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Old 04-29-2007, 12:24 PM   #6
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Quote:
Originally Posted by snow111 View Post
hey thx. im a newby, what do u mean by glazed? is there a coating on it like a donut? :-)
No, there's no sugar coating on the clutch. What ends up happening is the surface of the clutch becomes "polished" or "glazed" due to the fly wheel and clutch surfaces rubbing against each other too much. When this happens, there isn't enough friction for the clutch to catch onto the flywheel, hence slippage.

If I were you, find out how fast your car goes in 3rd gear at around 3-4k RPMs. Then, when you find a safe area to test to see if your clutch is slipping or not, do your acelerate in 3rd to see if your car is traveling as fast as it's suppose to be going at that same RPM/gear. If not, then your car probably has a worn-out clutch.

Some people notice the clutch slipping more often while trying to acelerate up a hill.


Quote:
Originally Posted by snow111 View Post
Another question, are suby clutches weaker than compared to other cars. I think I read somewhere if you are buying an impreza, the automatic tranny's the better way to go.
Subaru's are known to have some-what of a finiky transmission. When you push 140-300hp through all four wheels, something has to give. It's either your tires breaking free and burning rubber, or your half shafts snapping, or your transmission gears breaking or your clutch slipping. When you pump 200hp to the ground through two wheels, then it's usually the tires that break free and squeel. Output that same amount of power through four wheels, and it could be the transmission gears that break. That's what gives the Subaru transmission such a "bad rap." I do know of someone who broke his 1st gear while launching hard with sticky tires - this was done with an old RS with 165hp!

Between clutch and transmission, I'd rather have the clutch give out rather than the gears to be broken.

Good luck with the clutch.

LaterZ!
Darren!!
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Old 04-29-2007, 12:24 PM   #7
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I don't know where you heard that auto Imprezas are better. Autos are for people that don't have use of their left leg.[/quote]

Thx, madcat. I think it was in one of the nasioc forums that someone somewhere said a high proportion of the impreza non wrx wagons were auto, as the clutch is weaker that other cars. i also heard the wrx owners saying their stock clutch is not up to par, but like you said if you do a lot of spirited driving, most stock clutches won't be up to par. i'm just thinking on my old mx-3 precidia v6, i had over 120k's and never had a problem with the clutch, and i drove that car harder than my impreza.
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Old 04-29-2007, 01:11 PM   #8
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123455

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Old 04-29-2007, 01:25 PM   #9
madcat
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My 73,000+ km stock clutch has no problem holding 250 whp, but I would expect the WRX clutch to be beefier than the TS. Still, 34k isn't very long at all.

Driving a car hard isn't necessarily hard on the clutch, as long as you aren't constantly dumping heat into it (slipping).
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Old 04-29-2007, 02:18 PM   #10
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I'm at 96k on my stock clutch... drag racing and autox included
And it's on its way out now, eh Paul?
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Old 04-29-2007, 06:43 PM   #11
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I'm at 96k on the stock clutch too. Been running 240+whp for 2-1/2 yrs now and have done 2 track days and 40+ autoX events.
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Old 04-29-2007, 09:21 PM   #12
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Old 04-30-2007, 02:16 AM   #13
snow111
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QUOTE=Penphoe;17895391 If I were you, find out how fast your car goes in 3rd gear at around 3-4k RPMs. Then, when you find a safe area to test to see if your clutch is slipping or not, do your acelerate in 3rd to see if your car is traveling as fast as it's suppose to be going at that same RPM/gear. If not, then your car probably has a worn-out clutch.

Hey Darren Z,

I tried this today, and there 's no slippage. Keeping my fingers crossed for now.

Thx again for everyones input.

Last edited by snow111; 04-30-2007 at 02:23 AM. Reason: edit
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