Porsche 993 Turbo rear brake disk on rear of a Audi RS2?!

[Audi-Porsche Avant RS2]

Hello, I have a question, do you know if is possible mount the rear 322x28 mm brake disk original from Porsche 993 Turbo on the rear axle of the Audi RS2? I already know that I must change also the calipers, but my problem is the internal and external measures of Porsche 993 Turbo rear brake disk and Audi RS2 rear brake disk. Thanks a lot! Bye

Alessio

[Audi-Porsche Avant RS2]

Nobody have try it?

Alessio

[Albert]

I my opinion the brake pistons will be to big for the rear and you would have to have gigantic front brakes for this setup. This would kill your brake balance.

[Audi-Porsche Avant RS2]

On front of my RS2 I have the big reds with 322x32 mm brake disk, Porsche 993 Turbo have 322x32 mm brake disk on front and 322x28 mm brake disk on rear, I know that normally front brake disk are bigger that rear.
Alessio

[Albert]

Not only disks but also the pistons in the calliper

Front 322 x 32 disk

Piston 1: 44 mm
Piston 2: 44 mm
Piston 3: 36 mm
Piston 4: 36 mm

Rear RS2 disk 299mm

Piston 1: 24 mm
Piston 2: 24 mm
Piston 3: 26.5 mm
Piston 4: 26.5 mm

Can you see the difference ?

[ur-s4315]

Do you have the specs for a 993 rear disc? I'm planning to go with the 996 carrera rear calipers sometime in the future and it would look great if the 993 rear disc would fit.

[Albert]

rs2 has rear disk 299 x 28

but I'm using 5 x 112 S4 300 x 22 mm rear disk for standard S2 bolt pattern and it also works. I had that for a while.

[Jamo]

Rs2 is 299x24mm AFAIK