Nurburgring in Sept/Oct

Martin,

hearing comments like Grant's is one of the reason I do not encourage people to copy what I do. I do not want to explain why I have done this and that and do not want to be held responsible if things do not work out as expected. I can assure you that I am not suicidal
and take great care in what I am doing.
I will of course explain to anyone interested what parts and work is invloved, but everybody is using this setup AT THEIR OWN RISK!

The disk is indeed close to the tierod ball joint but I have already something in mind to protect the ball joint. But this is only because I have REMOVED the backing plates. If you leave the backing plates fitted, you need to bend them to clear the thicker disks and the ball joint will be as protected as before.

So for anybody who wants to know:

--You will need brake calipers from a E32 735/750
--the caliper bracket will need some minor milling
--the disks are Mercedes W124 E500 (early model, 300mmx28)
--disks need modification of the centre bore and the PCD.

Thats all.

can't advise on machine shop, I do most of the work myself.

left Merc 500 disk, right BMW M3 disk


Merc 500 disk (not machined yet)


drawing for Merc disk modification


elongating holes of Merc disk to suit PCD of 120


Red arrow shows the boss of the caliper bracket which needs to be milled flat


Bracket milled flat


another shot


the caliper bracket does NOT sit at the very centre of the disk. I didn't fancy to mill more off the bracket.
But as this is a sliding caliper it will make up for the difference which is less than 1mm.
The red arrow indicated the area where you have to make sure it doesn't hit the disk.


Edited by UweM3

Martin,

just compare the first drawing with the second.
In first the holes are circular, in the second drawing they are slot holes.
I would say brakes are now adequate for the car. You want to brake, push the pedal. You want to brake more, push a little bit harder. Not like that "it doesn't matter how much harder i push nothing more happens" feeling from the stock brakes.
I can lock the wheels with ease at 80mph. Ask Kevin
And they didn't change at all, I did 4 lap runs with just the ticket machine as a break time inbetween.
No fade, just pure braking pleasure

Edited by UweM3