[s-cars] Rear brake calipers

[Bluemaxww1 at aol.com]

No, you can't use the A8 disc.  The 280 rear rotor from the A8  has a total 
height of 46.3mm.  The total height of the UrS rear rotor is  56.5mm.  The A8 
rotor does have a deep enough hat for you to run it on your  car.
 
But the A8 caliper does have a larger piston, so you could get a little  
additional braking from that.
 
You may have to do a little searching to find a rotor to fit.
 
Greg W.
 
 
In a message dated 12/7/2006 1:51:41 P.M. Pacific Standard Time,  
rfitton at vt.edu writes:

Can't we  just use the whole S8 setup?  280mm rotors, S8 calipers and  
carriers?  I was under the impression that all the other pertinent  
dimensions were  compatible?

-Cheers!
Mike

Bluemaxww1 at aol.com  wrote:
>  
> The A8 rear caliper is a bolt up to the UrS  carriers.  The caliper is  
> aluminum and it is a center pull  ebrake as is the UrS calipers.  The  
location of 
> the ebrake  hookup is a little different, but should work.  You  will need 
to  
> ream out the ebrake cable stop, because it is a little smaller  on  the A8 
caliper.
>  
> You can see pictures of both  calipers on this write up I did when, I  did 
an 
> upgrade on the  rear brakes on my coupe.
>  
>  _http://forums.fourtitude.com/zerothread?id=1572831_ 
>  (http://forums.fourtitude.com/zerothread?id=1572831) 
>  
>  Greg W.
>  
> In a message dated 12/7/2006 11:01:04 A.M.  Pacific Standard Time,  
> s.sikss at gmail.com  writes:
>
> The  S-bitch has frequently seen temperatures  below -20F with no sticking
> rear  caliper issue so I don't think  the problem you're experiencing is
> caused by  a design flaw in  the urS calipers. Simply, the grease in the 
hand
> brake  mechanism  is old, probably mixed with a good deal of rust powder, 
and
> a   full rebuild of the calipers should solve the problem for several   
years.
>
>
>
>
>  Vincent