Brake master cylinder

[PeterBergin at aol.com]

Try Chris at Force5 auto.
Pete
 
 
In a message dated 12/1/2011 9:18:20 A.M. Central Standard Time,  
jkempf at madriver.com writes:

 
Gotta find a used master cylinder to rebuild. The only one I  have found so 
far is in Germany. Got nothing to measure right now without  disabling the 
car. 
 


jfk


-------------------------
Jay  Kempf
jkempf at madriver.com
802 272 5868  


 
____________________________________
 From: Bernie Benz [mailto:b.benz at charter.net]  
Sent: Thursday, December 01, 2011 10:15 AM
To:  jkempf at madriver.com
Cc: PeterBergin at aol.com; auditony at gmail.com;  200q20v at audifans.com
Subject: Re: Brake master  cylinder



So, just go do it! Talk won’t do it.  


On Dec 1, 2011, at 6:14 AM, Jay Kempf wrote:


Depends on what your  tolerance is for cheap chinese rebuilds. Anywhere 
from $100-150 for rebuilds  and $300-$500 for supposed new original parts.
 
Seals are basically  free and the only thing that ever goes bad. I rebuild 
stuff all the time  that supposedly you can't rebuild. I trust my own work 
more than rebuilders.  I rebuilt every hydrualic unit and all of the CIS fuel 
injection stuff in my  928. The fuel distributor was selling for something 
like $1100 new. I  rebuilt it for a handful of free orings from an autoparts 
store near where I  live. Took an hour of measuring.
 


jfk


-------------------------
Jay Kempf
_jkempf at madriver.com_ (mailto:jkempf at madriver.com) 
802 272 5868   


 
____________________________________
 From: PeterBergin at aol.com [_mailto:PeterBergin at aol.com_ 
(mailto:PeterBergin at aol.com) ]  
Sent: Thursday, December 01, 2011 9:09 AM
To: _jkempf at madriver.com_ (mailto:jkempf at madriver.com) ; 
_auditony at gmail.com_ (mailto:auditony at gmail.com) 
Cc: _b.benz at charter.net_ (mailto:b.benz at charter.net) ; 
_200q20v at audifans.com_ (mailto:200q20v at audifans.com) 
Subject:  Re: Brake master cylinder



Hate to ask, but how much is a new one.  I bought one from a local  auto 
parts store 12 years ago for an old 5000 avant that preceded my 200  which 
preceded my S6.
 
I was only $75
 
Pete
 
 
In a message dated 12/1/2011 8:05:44 A.M. Central Standard Time, 
_jkempf at madriver.com_ (mailto:jkempf at madriver.com)  writes:

That has not been my experience with 20 year old seals. They  turn to hard 
plastic and stop working like a seal eventually. There are a  few Dorman 
part numbers for kits for different bore diameters for VWs of  the same 
vintage. I just need a MC off the car. For me sourcing seals is  not a problem. I 
have been in the trenches in engineering for decades so I  know how to 
measure and find the right seal even if I don't have a part  number. So back to 
anyone got a dead one they would like to donate to the  experiment? Boils down 
to two lip seals normally in Nitrile Rubber for DOT  3/4. 
 


jfk


-------------------------
Jay Kempf
_jkempf at madriver.com_ (mailto:jkempf at madriver.com) 
802 272 5868   


 
____________________________________
 From: Tony Hoffman [_mailto:auditony at gmail.com_ 
(mailto:auditony at gmail.com) ]  
Sent: Thursday, December 01, 2011 8:25 AM
To: _jkempf at madriver.com_ (mailto:jkempf at madriver.com) 
Cc: _PeterBergin at aol.com_ (mailto:PeterBergin at aol.com) ; 
_b.benz at charter.net_ (mailto:b.benz at charter.net) ; _200q20v at audifans.com_ 
(mailto:200q20v at audifans.com) 
Subject:  Re: Brake master cylinder



Jay,
 
I'm one that agrees with Bernie on this. Take it apart and clean  
everything, inspect closely. If the rubber is not torn, no reason to  replace it. It 
will seal well, not intermittently. If you can get a  rebuild kit, by all 
means replace everything if you wish. However, they  are not available for any 
of these older Audi's that I'm aware of, and  therefore a real PITA to 
source each little piece. So, I jsut  dissassemble, clean out all the gunk 
(which is what is giving you problems  IME) and reassemble. 
 
Tony




Jay, DFWAB!
Your MC is probably OK if the pedal  does not go to the floor, however
slowly.
And one does not need  rebuild kits for MC or calipers unless a boot is torn
and needs  replacement.
Just clean the parts well and  reassemble.