Re: Brembos, big reds, etc.

["Pantelis Giamarellos" <pantg@otenet.gr>]

Paul and the list Hi,

Regarding the 993 and 993TT differences in brake rotors and calipers sizes I
would like to point out that this difference also exists for the RS2.

AUDI is offering a "modified brakes" set.

My car was bought third hand but was equipped with this set from the
factory.
When I bought it the previous owner did not know anything about the bigger
(and drilled) front and rear brakes.
When I saw the Movit site I thought that they originated from them.
Then I got my hands on ETKA (thanks to he who knows who he is) and I found
out that the car had the original modified brakes.

According to ETKA
Front standard Big Red parts are:
rotors, LH 8A0 615 301B, RH 8A0 615 302B (304 X32mm)
calipers, LH 8A0 615 105E, RH 8A0 615 106E
pads, 8A0 698 151E and F and 8A0 615 231D

Rear standard Big Red parts are:
rotors, LH and RH 8A0 615 601B
calipers, LH 8A0 615 405M, RH 8A0 615 406M
pads, 8A0 698 151

---------------------------------------

MODIFIED (drilled and bigger)

Front modified Big Red parts are:
rotors, LH 8A0 615 283, RH 8A0 615 284 (322 x 32mm and drilled)
calipers, LH 8A0 615 105K, RH 8A0 615 106K
pads, 8A0 698 151G or 8A0 615 231D

Rear modified Big Red parts are:
rotors, LH and RH 8A0 615 601D
calipers, same as standard set
pads, 8A0 698 451B

------------------------

Please note that ETKA gives at least four other options for rear pads on the
modified brakes set.

I hope the above is helpful for anyone interested on a Big Red conversion.

Regards from Greece
Pantelis Giamarellos

P.S. If anyone is interested for a photo of the front and rear modified
(bigger and drilled rotors) RS2 Big Reds you can ask me for it.






-----Original Message-----
From: Paul E. Rivera <rivera@rivera.com>
To: Quattro List <quattro@audifans.com>
Date: &Pgr;&eacgr;&mgr;&pgr;&tgr;&eegr;, 13 &Mgr;&agr;&idiagr;&ogr;&ugr; 1999 12:18 &pgr;&mgr;
Subject: Brembos, big reds, etc.


>Personal opinions on brakes. No flames please.
>
>I have done a little research on the latest moves  by members to put 4
>pot boxster
>brakes on a 3500+ lb car (200's, 5Ktq,s, etc.) Even a A4 Quattro is no
>lightweight.
>This caliper is about the size of the rear brakes on a 993.
>Kind of pint size.  Not only is the square inches of pad surface small,
>the heat sinking capabilities of the housing are small, and the clamping
>force of the caliper itself is small. This Caliper would be suitable for
>a small FWD coupe like the GT, or maybe at worst case a Ur-Q. I realize
>they are cheap, but if you are trying to get a reliable increase in
>stopping power, especially if you are using them on the track, you are
>going to wind up at the end of a amateur brake engineer failure test.
>
>
>A8 Rotors, S6 Rotors are decent stock rotors, but they are not even in
>the same league
>as the Porsche Rotors used in the 993  front and 993TT front.
>
>A4 and A8 owners have experienced severe rotor warp with only a day on
>the track.
>
>Big reds. Seems to be two different Big Reds. 993, (351-421-00) and
>993TT (351-425-10) There is a 24% difference in pad size, let alone
>differences in piston and housing size. It all counts.  Compare these
>calipers to the Boxsters, it is a world of difference.
>
>Just because you can make'em fit, does not mean they are right.
>
>Paul Rivera
>91 200 TQA (Big reds in boxes waiting for wheels)
>94 S4 with Big Reds
>
>