anyone here with a S2 Coupé and 312mm rs4 b5 rotors on the rear?

[NEO]

Awesome solution. But I can't understand how the bracket are fastened to the assembly...?

What would a pair cost?

Here some pictures from the mounted adapters.
The first pictures are from the S2 coupe and the other pictures from the S2 Sedan and Avant axle.
The next days I will bring it on the car and then I shot some more Pictures when the axles completely mounted.

[quattrofrank]

Avant or coupé...?

coupe offcourse

[Ruhmic]

Pictures

Here are a few photos like the whole thing is screwed to the wheel bearing housing and how the wheel bearing housing is being processed.

[quattro]

And the cost of this solution?

[Wolfgang]

@quattro-frank

how much material must be grinded of on your solution? 3-4mm?

@all

the R8 rear brake setup from ruhmic is amazing... can´t wait to see more pictures of that on the cars!!!!!

i also attached some pictures of my done brake project on the rear. you may have a look..

kind regards!

Wolfgang

[quattrofrank]

4-5mm I guess. I wanted to change hubs to avoid grinding, but because me rims are already touching the wheel arces I needed to avoid this. Its still alot of material left on the carrier so I`m not to concern

[Wolfgang]

yes... as you said.. the calipercarrier is 14mm thick. the wheel bearing house is at this place only 10mm thick... means 3-4-5 mm shouldn´t be a problem.

although i really don´t like changing something like this...

[John B]

Rear Brakes

Hi Ruhmic,

This is quie a comprehensive solution you have. Just a few points: -

1) As others have pointed out, how much have you had to to grind back the face of where the caliper carrier used to bolt on?

2) You have used one of the splash shield holes to bolt your solution on. That is the way i was going. The hole was origianlly an M6 thread but you look to have bored to M10. Does this weaken the hub too much?

3) I guess the soultion has to be a perfect fit before you bolt it all together as it needs the hub to be pressed into the bearing, the hub to be torqued to the strut and the hub to be torqued to the axle......all of which are a major pain in the a** to undo.

4) Does the ABS sensor still fit with the handbrake caliper?

5) What handbrake cable solution do you have in mind?

No criticism here... I admire the pioneering!

Some folks have commented that bigger rears upset the balance of braking but in my view lots of attention is lavished on up-sizing the fronts and retaining the standard rears, which changes the balance from standard.....there is some form of balance to be had here....more from me on braking theory when i have time to write it up.

Good effort!

[Ruhmic]

Rear Brakes

Hello John B,
here are a few answers to your questions.
1) The height is not changed and remains original. The outer diameter of the wheel bearing housing is changed, but only as much as necessary to allow the fit of the adapter.
2) Yes, there is a hole from the splash shield, that is changed to M10. The wheel bearing housing is still strong enough at this point.
3) The adapter is pressed prior to installing the wheel bearing housing and screwed. Then the wheel bearing and the hub is pressed in. Then mounted it to the axle.
4) The ABS sensor fits here without problems. For smaller discs but it is problematic with the ABS sensor.
5) The hand brake cable is a special solution that is specially made.

The balance of the brake is adapted specifically. The front axle brake system is installed RS4 B7. There is also a special master brake cylinder and uses a modified brake booster. The pressure regulator is also changed to the rear axle.

[Wolfgang]

finished:













all components listed FOR COUPÈ S2:

orig. S2 Coupe brake-hose
orig. S2 Coupe handbrake-cable
RS4 B5 Rear Brake discs
RS4 B5 Rear Caliper bracket
RS4 B5/S4 B5/A4 B5 Quattro REAR standard wheel hubs
RS4 B5 rear brake-pads. (S2 rear brake pads would also work BUT not 100%)
Girling 41/43 rear brake calipers from URS4, URS6, Urquattro 20V, Audi V8 D11, some A8 etc.
orig. S2 Coupe Rear wheel bearing
orig. S2 Coupe Rear wheel bearing houses

NONE of these parts is in any way modified or changed. ALL original Audi parts plug´n´play.

Remember guys, don´t try this at home.

best regards!

PS: All on this site: www.AudiS2.de

http://www.audis2.de/index.php?view=article&id=121&option=com_content&Itemid=5

[NEO]

Remember guys, don´t try this at home.

http://www.audis2.de/index.php?view=...ntent&Itemid=5

Are you crazy? Of course we will!

DO you have any of the vital measurements of those calipers? Like cc of the "ears" that you fasten them to the brackets with? Any other measurements would be appreciated. I guess you know what I'm thinking... Will they fit on the RS4 b7 brackets, oh yeah. That's what I'm thinking.

[Ruhmic]

Some Update from the R8 solution

Here are some pictures from the R8 solution on the Coupé.
It´s all completely mounted with the handbrake cable

[AndyP]

Anybody got a source for B5 quattro rear hubs? Fronts I can find for about £35 new, but not rears

[Error404]

I got some RS4 ones off one of the guys on SRS, got quite a few offers from a wanted ad

[AndyP]

Good point, that worked with the RS4 caliper carriers, so I'll give it a try