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Old 07-06-2007, 09:18 AM   #1
SQ3.0dotJP
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Default master or slave? am i correct in my limited subie troubleshooting experience

so, i was driving the other day, a tad spirited i suppose on some of the local twisties. and all of a sudden i just couldnt shift , there was no clunk, and its all 5gears and reverse OOC. since i was rolling i managed to force it into 4th and limp home. I checked my clutch pedal and the linkage to make sure everything was connected. i feel the same feedback as usual when depressing the pedal, but nothing. The next day I put the car in gear, depressed the clutch and turned the key, and sure enough it started bucking. I wasn't really sure how to determine if it was the master or slave without taking them apart and checking seals and whatnot. another thing i did was remove the clutch resevoir cap and have a friend pump the clutch and there appeared to be no fluid movement.
Just making sure i did all this right, i ordered a master and slave since SGP sells them at a decent price. i plan to rebuild them both and either sell them or keep as spares. I guess i'm wondering how common a thing is it for them to fail. Any other tests or suggestions are welcome, no car sucks


oh, and looks like my last fluid flush they overfilled way beyond the full mark
clutch has 20k miles (spec stage 2)
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Old 07-06-2007, 02:26 PM   #2
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anyone?
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Old 07-06-2007, 02:30 PM   #3
SeattleESiR
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I have a similar problem;
I was driving along and topped 4th in my 05 sti and missed 5th... i put it into 3rd by mistake and god that thing was loud. The car is still ok, no bent valves, still got all the power and boost, yet now it feels like a bad master and/or slave. It will come and go (between bad and worse) almost to the point where i cant get it into any gear. It is still drivable just take much more effort to get it into a gear.
Also, the engagement has changed from mid pedal to almost all the way to the bottom. And now there is a lot of chatter when taking off from a stop.
No unusual noises, good fluid (due for a change soon)

This is a stock clutch with 38K, no slippage, no problems with the tranny of any kind until this.

Mods are gt35 (19psi) fmic, cobb ST, equallength header, 3" catless tbe, k&n intake, slowboy turbo inlet, perrin 816cc injectors, walbro 255.
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Old 07-06-2007, 03:21 PM   #4
SQ3.0dotJP
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yeah, i recall having some shift issues but when i started running a cocktail i didnt really notice it for a few weeks. i'll post up what happens after i get everything swapped out as it seems to be what i went through. if i were you i'd hit a dealer for the free diagnosis then change it out before you get stuck somewhere. i'm amazed i muscled my car home, lucky there were no stop lights.
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Old 07-08-2007, 11:21 AM   #5
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ok, pulled the boot for the fork to take a peak inside nothing obviously out of the norm

question, how far is the slave/fork supposed to move? it appears im getting around an inch of movement, at the fork, when fully depressing the pedal.

damn i don't want to have to take it to a shop for something simple, but if it's something internal I may have no choice since i don't have a garage.

i pulled the bleeder on the slave and im getting fluid, could it just be a master failure ie, not sending engough fluid to fully disengage the clutch/

there was normal pedal feel FYI, just no disengagement

can only shift gears when car is off

car bucks when starting it with clutch depressed and in gear

will not go into gear when running

what does a throwout bearing failure intail?

help!!!

Last edited by SQ3.0dotJP; 07-08-2007 at 12:00 PM.
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Old 07-08-2007, 12:01 PM   #6
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ok, i tried to recap everything and make it readable, help
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Old 07-08-2007, 01:38 PM   #7
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It sounds to me that the clutch disc and or pressure plate are toast. You are getting the proper amount of movement at the fork. It's time to get a new clutch, And this would be the second spec clutch I've heard of/seen go bad.

One of my friends with a 240 had a spec clutch and one of the straps that connects the pressure plate disc to the housing snapped and didn't allow the clutch to disengage properly. I'd recomend using an exedy clutch.
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Old 07-08-2007, 02:15 PM   #8
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gahh!!

ok, when i shine the light down the boot and engage the clutch notice theres what appears to be a ring on the input shaft from the gearbox. i need some diagrams

Last edited by SQ3.0dotJP; 07-08-2007 at 02:34 PM.
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Old 07-08-2007, 02:35 PM   #9
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No that is the throwout bearing.

You are going to have to remove the transmission for this repair buddy.
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Old 07-08-2007, 02:44 PM   #10
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yeah, i just found the simple diagram on howstuffworks.com. hopefully i can get ahold to a left. i've never pulled a AWD gearbox. i wish i had a lift. i know i' gonna get raped at 90% of the shops
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Old 07-08-2007, 03:06 PM   #11
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The only difference in removing the subaru gearbox compared to the one I did on my friend's 240 is removing the front axles from the transmission. You also have more room to get to the upper bolts near the firewall. It should be cake.
Just get a low profile transmission jack from harbor freight for cheap and lift the car high on 4 jackstands. You will also want to get a flywheel holder for bolting and torqueing the pressure plate back onto the flywheel. You may also want to consider replacing the rear main seal while in there.

Expect the job to take about 2 days worth of work.
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Old 07-08-2007, 03:16 PM   #12
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thanks for the help. wow throw out bearing 100 bucks... complete exedy replacement clutch on ebay 167. horse****

wtf is wrong with subaruparts.com they must be on chack
throw out bearing on rock auto 25bucks

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Old 07-08-2007, 03:41 PM   #13
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get a complete clutch kit. it should include: clutch disc, pressure plate, throwout bearing, and pilot bearing.
how much power is your car putting out?
a little over stock go with exedy stage 1
over 300 go with stage 2
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Old 07-08-2007, 03:59 PM   #14
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yeah, i'm going to the complete kit of ebay just in case, hell i can always resell what i don't use, or store them away. yeay my landlord doesn't want me to pull the gearbox (i live in a house converted to an apartment, my parking area is rocks. the driveway, which is plenty wide, he wont let me use). at least the clutch is cheap. buying the tools i need probably won't net me much savings in the end over a fairly cheap shop.
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Old 07-08-2007, 04:39 PM   #15
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Don't reuse any old parts. Use ALL of the new parts. save the old ones as spares
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Old 10-26-2007, 03:10 AM   #16
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What was the solution? Did the new clutch fix the problem? I am having similar issues on my 04 STi, with an ACT HD clutch.

http://forums.nasioc.com/forums/show...php?p=19830070
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Old 10-26-2007, 10:33 AM   #17
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I'll probably get **** for this, but you can shove a wrench inbetween the engine case and the flywheel to hold it in place. And dont forget the loctite
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Old 10-28-2007, 09:52 AM   #18
SQ3.0dotJP
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my throwout bearing assploded, ad the shift fork went though the pressure plate and clutch disc . carnage! Well we unbolted the pressure plate through what little gap we had, and everything came apart. It was indeed a bitch
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