[urq] Audi A4 brakes for the urq

[Schaible, David]

I know of several g60 urq conversions that work great... you can go
bigger etc. but it's questionable expenditure for the diff in $$ you
could do other mods....i believe the best mod is to increase the rear
bias then you don't need 300+ mm rotors on a 3200 lb auto, I never heard
the 91 200 avant MC to do this but know of people who used the 5000
avant MC to change the bias.....maybe if I had 3B motor I would need
more stopping power.



'83 urq- Cross drilled zimmermans w/ orig calipers (cheesed out by
painting them red), 5000 avant MC, 4K rears (with cable change)



David Schaible
 

 
 
JRS Pharma LP
2981 Rte 22
Patterson, NY 12563
845.878.3414
 
ALL STATEMENTS IN THIS CORRESPONDENCE ARE CONFIDENTIAL UNLESS OTHERWISE
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-----Original Message-----
From: Martin Pajak [mailto:Martin at quattro.ca] 
Sent: Monday, September 20, 2004 11:39 AM
To: ur.quattro at verizon.net; Mike Del Tergo
Cc: urq at audifans.com
Subject: Re: [urq] Audi A4 brakes for the urq

To be honest I've never had a problem with the G60 rotors (Brembo)
untill one of the front driveshafts started to fail.... 
Once the driveshaft was fixed and rotors resurfaced problem had gone
away.

On the SQ brake front, I had a bent hub, which would cause SQ rotors to
warp but not the stock single caliper set...

To add few other reasons that rotors warp, tie rods, stuck caliper
sliders, dirt between rotor and hub (those mating surfaces have to be
nice and clean).

Hope this helps.
Martin

---------- Original Message ----------------------------------
From: "Mike Del Tergo" <mdeltergo at hotmail.com>
Date:  Mon, 20 Sep 2004 15:13:17 +0000

>Bill,
>I think you missed my point.  You may be right about warpage not being 
>application specific, ie., all models have problems.  In as much as
warpage 
>is caused by heat, or lack of ability to adequately shed heat.  I
proposed 
>using a 312mm rotors, designed, (you say poorly) to shed heat generated
in 
>stopping ~4000lb car, on a car only weighing ~3,200lbs.  This should
provide 
>marked improvement in heat dissapationability over stock ~276mm.  I
assume 
>when you say "they make rotors out of soft metal..." You mean factory
apps.  
>If you add in a quality Brembo or Zimmerman on top of the larger rotors
I 
>would assume warpage would be minimized if not eliminated.
>Mike
>
>
>
>Date: Sun, 19 Sep 2004 21:00:20 -0700
>From: "Bill Bennett" <ur.quattro at verizon.net>
>
>Mike, the brake wear and warpage problem is not isolated to one chassis
A-4,
>A-6 or A-8 even with the huge 4 brake pad per side system on A-6 4.2 or
the
>S-4, A-8 just more dollars for repair, and it is not just Audi, it is
>MickieBenZ, BumMerW, VW, Slabb, umm, Volvo It seems like they are so
>concerned about noise, they make the rotors out of soft metal. shoot
even
>rear rotor warpage is common on the above at 50,000 miles, and you do
not
>fix a warped rotor, you replace it. Bill
>----- Original Message -----
>From: "Mike Del Tergo" <mdeltergo at hotmail.com>
>To: <ur.quattro at verizon.net>
>Cc: <urq at audifans.com>
>Sent: Saturday, September 18, 2004 8:48 AM
>Subject: Re: [urq] Audi A4 brakes for the urq
>
>
>>Seems to me the A4 caliper, mated with the TT carriers and the A8
rotor
>>would get past this problem. A rotor designed to stop a 4000lb plus
car
>>should hold up well on a 3000lb cars.
>>BTDT UrQ
>>Mike
>
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