[urq] Rear Brake Conversion

[CARDCONSYS at aol.com]

       Hear is my post from last year which I hope is in the Knowledge Base:

UrQ conversion to 1992-1994 S4/S6/V8 Brakes (G60 type)
19th February 2004, updated 20th September 2004.

To do this conversion you will need the following:
Front:
Use S4/S6 G60 Caliper/Bracket Assembly which will fit exactly on the existing 
UrQ strut mounting holes.
You cannot use either the standard UrQ disc(437-615-301A) or the S4/S6 
disc(441-615-301A).
The UrQ disc is very slightly too great a diameter and is not thick enough. 
The S4/S6 disc is the
correct thickness and diameter but has the wrong 'top hat'/dish/offset 
dimension for the UrQ hub.
Use disc from 100/200/5000 Quattro PN 447-615-301A/B. There is an equivalent 
Ate Power disc you might prefer(from Z motors) PN 24.0325-0102.1(525102).
For pads suggest Hawk HPS compound pad number HB270.

Rear:
Use the complete S4/S6/V8 setup, calipers and discs. You will also need to 
change to the pair of handbrake cables used on the 1984 and later 4000 Quattro.
Disc PN 857-615-601.
Suggested Hawk HPS Pad HB271.
Handbrake Cables Left 857-609-721D, Right 857-609-721E.

Suggest you discard the S4 intermediate hydraulic hose support bracket on the 
front caliper(it can interfere with the strut), and replace with a suitable 
SS protected Teflon line directly from the caliper to the body connection. You 
could use the standard S4 hydraulic hose at the rear but it is better to 
replace it with SS protected Teflon.

Martin Dapot
83 UrQ