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Old 04-15-2010, 04:37 PM   #1
DreWRX
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Default Clutch Bleeding Procedure on 02 WRX

Going to install a braided clutch line and found a nice writeup for bleeding by Peaty at Scoobymods here: http://www.scoobymods.com/bleeding-c...1.html?p=36199

However, his procedure is on non-turbo and his pic of the service manual page at the end outlines a different technique for turbo model. Basically it says instead of doing the pedal push-bleed-lift up pedal, it says to remove cylinder and use a clamp on the piston while bleeding.

Anyone done this that can tell me if I do the same procedure as for non-turbo w/o problems?

Thanks.
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Old 04-15-2010, 05:03 PM   #2
181stLeader
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The reason to bench bleed the turbo clutch slave is because the bleeder nipple is not the highest part the slave. Therefore it is very hard to get all the air out if it is bled on the car.
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Old 04-16-2010, 12:51 AM   #3
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the best way I've found to properly bleed a turbo slave cylinder is to unbolt the slave cylinder from the tranny, and hold it up as high as the line will allow. Then using a vaccum pump with tubing attached to the bleeder build up negative pressure, then open the bleeder and close it again before pressure reaches atmospheric. And repeat until no air comes out, while being careful not to completely empty the master.
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Old 04-16-2010, 11:51 AM   #4
DreWRX
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Dang, this doesn't seem that easy on the WRX then. Can anyone point me to a writeup with pics for the WRX? I have a Mightyvac, but never used it. Sounds funny how Subaru would not have the bleeder nipple at the highest point.
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Old 04-16-2010, 11:56 AM   #5
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Quote:
Originally Posted by DreWRX View Post
Sounds funny how Subaru would not have the bleeder nipple at the highest point.
BMWs are the same way.
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Old 04-16-2010, 09:36 PM   #6
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Quote:
Originally Posted by DreWRX View Post
Dang, this doesn't seem that easy on the WRX then. Can anyone point me to a writeup with pics for the WRX? I have a Mightyvac, but never used it. Sounds funny how Subaru would not have the bleeder nipple at the highest point.
just take the intercooler off... all should be clear from there. You may need to remove the starter depending on your tool selection.
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Old 04-19-2010, 10:58 AM   #7
Steve Nastoff
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Quote:
Originally Posted by ProdriveDreams View Post
the best way I've found to properly bleed a turbo slave cylinder is to unbolt the slave cylinder from the tranny, and hold it up as high as the line will allow. Then using a vaccum pump with tubing attached to the bleeder build up negative pressure, then open the bleeder and close it again before pressure reaches atmospheric. And repeat until no air comes out, while being careful not to completely empty the master.
This is how I have done it in the past. Works like a charm.
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Old 04-19-2010, 11:37 AM   #8
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Bench bleed is a nice thought but wont always get the bubbles out fully. It's not full proof.

There are so many threads that have different methods. The manual says to remove the slave and bleed it with the nipple up like a brake caliper.

ok here is what I did. I tried several methods. Every time I got only 1 inch of pressure. I finally bench bleed it and installed it in the car. Same... I pumped the pedal top to bottom 100 times. Then re-bleed the system to get the air out that has now moved to the slave. If everything else fails and you have that little pressure, this will work.
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Old 04-19-2010, 02:45 PM   #9
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Quote:
Originally Posted by hybrid gti 2 View Post
Bench bleed is a nice thought but wont always get the bubbles out fully. It's not full proof.

There are so many threads that have different methods. The manual says to remove the slave and bleed it with the nipple up like a brake caliper.

ok here is what I did. I tried several methods. Every time I got only 1 inch of pressure. I finally bench bleed it and installed it in the car. Same... I pumped the pedal top to bottom 100 times. Then re-bleed the system to get the air out that has now moved to the slave. If everything else fails and you have that little pressure, this will work.
hybrid, since you have done this before your way as you say and it worked, would you mind posting a mini-writeup on my thread here? Like a step-by-step? Would be MUCH appreciated.
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Old 04-19-2010, 02:58 PM   #10
hybrid gti 2
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The info seems to get lost as I have tired that a few times. Maybe I will write my own thread on this so it stops getting lost.
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Old 04-20-2010, 12:13 PM   #11
DreWRX
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Quote:
Originally Posted by hybrid gti 2 View Post
The info seems to get lost as I have tired that a few times. Maybe I will write my own thread on this so it stops getting lost.
Thanks. I just found a post of yours in another thread which basically outlines what you did. I think I'll roll with that.
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