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clutch restrictor

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Old Sep 29, 2003 | 09:02 AM
  #1  
tuner's Avatar
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From: Walnut Creek CA (SF east bay area)
clutch restrictor

FWIW wanted to pass on info about a problem I probably created when removing the clutch restrictor:

My car became disabled due to this problem and the same thing could happen to you!

1. When you do this job you will remove the small diameter hydraulic line from the clutch slave cylinder.
2. Then you will remove the slave cylinder and take off the banjo fitting that covers the restictor.
3. Once you take out the restrictor and spring you reinstall the banjo fitting back onto the slave cylinder
4. When you reinstall the banjo fitting you must be careful to have it pointing parallel with the body of the slave cylinder. This is a bit tricky because when you tighten the banjo fitting it wants to turn
5. When I did mine I had to fool with it a bit to get the banjo fitting lined up just correctly - and in fact I may have had it a very slight amount from perfect alignment

Now here is the problem: My clutch quit working and the pedal went to the floor. I noticed fluid dripping from the area around the slave cylinder. I removed the slave cylinder and found that the very end of the hydraulic line was broken off just at the double flare on the end, allowing fluid to leak out.

Why did this happen? I think I did not have the hydraulic line perfectly lined up in a straight line where it bolts into the slave cylinder - causing some sideways pressure on the line at that point and the resultant failure.

Suggestion:
If you have performed this mod, if I were you I would pull the air box and check to be sure the line goes into the slave cylinder in a perfect straight line.

Since I run my car on the track, I think I will replace the slave cylinder bankjo fitting and the piece of solid steel line that connects to the slave cylinder with a braided line that has a banjo fitting in the end. This way it would be unlikely there would ever be a failure at this point. This (2nd) braided line would be a good piece for Alamo or someone to market IMO.

BTW, the failure occured just at the corkscrew at Laguna Seca. Thank God it was close to the end of our track day!
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Old Sep 29, 2003 | 09:07 AM
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From: Charlotte, NC
Did you not install the stainless steel clutch hose aswell when you took out the restrictor pill?
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Old Sep 29, 2003 | 09:14 AM
  #3  
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From: Raleigh, NC
Originally posted by 4-BNGR
Did you not install the stainless steel clutch hose aswell when you took out the restrictor pill?
Hey 4-BNGR, me and another guy are going to be doing this mod one night this week (probably Wed) if you are interested in coming over and doing yours as well, you are more than welcome. We have a Motive Power Bleeder so rebleeding the system shouldn't be a problem.
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Old Sep 29, 2003 | 09:31 AM
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From: Alexandria, VA
you don't even need a bleeder for the job, gravity works just fine also make sure you put both copper washers back on... one on top and one on bottom of banjo fitting
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Old Sep 29, 2003 | 09:40 AM
  #5  
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Yes, I did install the braided line when I removed the restrictor. The braided line only goes part of the way down to the slave cylinder, then it hooks to the solid line (which broke on mine) which goes into the slave cylinder.
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Old Sep 29, 2003 | 11:17 AM
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From: Las Vegas
tuner,
thanks for letting us know. I just looked at mine and it looks ok, just a hair off of strait. Doesn't look like its binding or bent. how far off was yours? I never removed the slave cylinder just the banjo fitting. You think you could have cripped the line while reinstalling the slave? Did you tighten the banjo before or after tightening the slave ?

I did notice a tiny bit of brake fluid residue at the master cylinder/ss clutch line around the banjo bolt. Only noticed it when I put a clean paper towel on the fitting. Not even close to a drop. I know it wasn't there when I finished the job a couple of weeks ago because I cleaned everything off so I would be able to tell if it was leaking later. I know others have had problems with the banjo bolt in the Alamo ss line being to long. I just torqued it a little but I'll keep an eye on it.

Take care

Last edited by mojo; Sep 29, 2003 at 11:23 AM.
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Old Sep 29, 2003 | 11:24 AM
  #7  
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From: San Jose, CA
Bob do you think a braided line is going to be ok to take the place of a solid line? Also kudos for the LS track run, my dream track!!
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Old Sep 29, 2003 | 11:29 AM
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From: Charlotte, NC
Originally posted by StriktlyBidness


Hey 4-BNGR, me and another guy are going to be doing this mod one night this week (probably Wed) if you are interested in coming over and doing yours as well, you are more than welcome. We have a Motive Power Bleeder so rebleeding the system shouldn't be a problem.
I'm leaving the restrictor pill "in" but prob. will do the ss line. I also have to put in my RMR air intake. My Buschur muffler delete pipe should be here on Wed/Thr? I'll bolt it on then and go out for a butt dyno. I'm looking into another way to make the turbo run higher psi other than a BC or the restrictor pill mod (I'm straying away from the restrictor mod b/c I don't want the potential boost "spike" acompanied with it).

Where are you guys gonna be on Wed?

Did you make it to Octoberfest? I've got pics somewhere on my computer... Check the regional thread I posted.

4-BNGR
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Old Sep 29, 2003 | 11:37 AM
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From: California
I just took out the restrictor and the car feels totaly diffrent.
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