Audi V8q vs. A8/S8q rear calipers...

[Bluemaxww1 at aol.com]

Hi,
Measured with the boots on, the UrS4/S6 piston and A8 are approximately  41mm.
 
The caliper carrier can be purchased seperately.  I got the caliper  off an 
A8 and had to buy the S8 carrier brackets.
 
I would say the calipers would be a straight swap on a 200/Scar.  I  had to 
flip the side to work on a coupe.  Our calipers on opposite sides of  the 
rotors vs. yours. 
 
The ebrake pivot is on the bottom of the caliper vs on the side for the UrS  
cars.  But the brake cable will work, if only slightly different  placement.  
The coupe, UrS cars and the A8 all have the cables coming from  the axle side 
not from the front.  I believe it will work.  Of course,  I only have the mock 
up for the coupe to try them on.
 
Greg
 
 
 
In a message dated 8/3/04 6:19:08 PM Pacific Daylight Time,  brett at cloud9.net 
writes:

Couple  of questions for you-

Are piston diameters about the same,  roughly?

Also, for 200q20v and S-car owners, are the A8 calipers easily  
swapped for the stock calipers?

Can you get the carrier bracket  with the caliper, or separately?  The 
pins on my 200q20v are ever so  slightly bent and I had to sand them 
to eliminate notches that were  causing binding...so ideally these 
need to be replaced, but the pins are  not available separately, you 
have to get them with a carrier, and the  carrier isn't even available 
separately!

E-brake similar in  style?

I ask, because I've just about had it with the POS design of the  
original V8/S-car/200q20v rear calipers...and hey, a few pounds 
weight  savings couldn't hurt, although it isn't exactly the rear that 
suffers  from unsprung weight in a UFO-equipped 200q20v  :-)

Thanks!
Brett