[urq] Brake rotor resurfacing...

[louis-alain.richard at sympatico.ca]

That’s what I think too, pad deposits or rust pits or uneven surface
roughness... Sure, a turning job would take care of that, and is really not
expensive.

 

Why don’t I go to a brake shop and have them turned ? 

 

Because they are not very thick from the start, and wanted to keep them as
thick as possible. But it is indeed the normal procedure for pulsating
brakes, I know.

 

Since I now have a dial gauge here (as Vittorio said, any problem is just a
good reason to get new tools...), I will surely check runout first but I’m
quite sure they are fine. They still look perfect, surface is shiny, lip is
minimal and not much rust overall.

 

Last thing, maybe it’s the rear brakes : they are indeed older, and not
vented (so no turning possible).

 

So, first check runout. Then buy a simple coarse foamy emery pad and work
them out. After, either have them turned or replaced. 

 

More to come !

 

Louis-Alain

 

De : Grant Lenahan [mailto:glenahan at vfemail.net] 
Envoyé : 19 août 2009 19:23
À : audi at humanspeakers.com
Cc : louis-alain.richard at sympatico.ca; urq at audifans.com;
quattro at audifans.com
Objet : Re: Brake rotor resurfacing...

 

My pulsing pedal problems have never turned out to be warpage. Always pad
deposits.

I realize this violates long held "wisdom", but its becoming more and more
accepted. You can also go to stoptech's web page and see what they have to
say about it.

Mis-diagnosed by audi many times, and under warranty, i was fine with rotor
replacement. Now, less so.

 

Grant

On Aug 19, 2009, at 5:32 PM, Huw Powell wrote:





 

 

louis-alain.richard at sympatico.ca wrote:

My 1983 urQuattro is back in function but since it sat unused for a few

months, now the front rotors (less than 2000 miles) are "spotted". The brake

pedal is pulsating a lot, even after a dozen high speed braking exercises

(with a long cooling period between each stop).

 

If the pedal is pulsating, then surely the rotor(s) is unevenly 

thick/warped.  With sanding there's no way to make sure you are removing 

the correct material, why not just take them to a mechanic and get them 

run on a brake lathe?

 

-- 

Huw Powell

 

http://www.humanspeakers.com/audi

 

http://www.humanthoughts.org/

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Grant Lenahan

glenahan at vfemail.net

(201) 602-4702 mobile