6 piston calipers for 18" wheels + 4 piston rears NEW PICS in 1st post

[elmerzasty]

The brackets were 3d designed, CNC milled and zinc coated - and look like this:

[elmerzasty]

When I chose the SLS/E63/C63 calipers I had the pad shape in mind - I wanted the new pad to have the swept area as close to OEM F8x as possible. I do not know whether the RS7 caliper or any other would also accomplish this.

[stranger]

Originally Posted by elmerzasty

When I chose the SLS/E63/C63 calipers I had the pad shape in mind - I wanted the new pad to have the swept area as close to OEM F8x as possible. I do not know whether the RS7 caliper or any other would also accomplish this.

have you had a chance to try these out on track yet?

[MasterP]

By all appearances the RS7 Brembo looks a lot like the R35 GTR caliper, those have massive pads.

Larger than MB's pad.

[elmerzasty]

Originally Posted by stranger

have you had a chance to try these out on track yet?

Not yet. Currently I am working on a rear 4-piston setup. More info soon.

[baz171]

Hi elmerzasty

Conversion looks excellent and I hope it does live up to expectations.

I can see you have not tracked with just the front 6 pot conversion but what are the initial differences on the street/road?

With the set up retaining the standard from rotor/disc, is there a real need to upgrade the rears to a 4 pot caliper?

From my experiences on track, it's clear to see that the discs are prone to heat soak, it's still a heavy car!

So will retaining the standard rotors/discs but changing to the 6 pots get rid of this? I doubt it but what it's likely to do is improve initial bite and keep a firmer/better pedal feel when pushing.


Is it not an obvious choice to fit the matching 4 pot rear callipers from the same Merc set up? Or is it more complicated at the rear due to the likes of the handbrake/e brake.

Baz

[elmerzasty]

EDIT: I have upgraded the rear to 4-piston setup with calipers that came off a Porsche Panamera. Pics in the first post.

Braking is MASSIVELY more efficient than with stock calipers. The apparent difference is in pedal feel and brake force modulation. With the stock calipers - which in my opinion lack rigidity - braking force was inconsistent with pedal force applied. With the monoblock 6-pots/4-pots it is just so easy to brake precisely, thus inspiring confidence and reducing the time during which the pads are "on their way" to disc surface.

As to the issue of heat capacity, I can't say from experience since I have not tracked this setup, but in theory not much should change from stock, since rotors, tires and car weight remain the same. However, since pedal feel is greatly improved, it might help in braking in shorter "bursts" by reducing the time the pad is not working its 100% against the rotor (during pedal depression), and as a result, generate less heat. That is however my speculation at this point.

Rears from the Merc will not work, since they use a narrow pad and do not have radial mounting holes. That is why I used the Porsche rear calipers. The e-brake on the F8x is not an issue since it does not utilize the calipers (it's a drum system).

[wkndracr]

Great upgrade. I would think the physically larger caliper would help somewhat with heat dissipation, at least keep the fluid temp lower. I assume it was not possible to use the front oem caliper in the rear?

[pbar]

Any idea how much extra unsprung weight is added with the larger calipers? Does this affect handling at all?

[elmerzasty]

The rear setup weighs almost the same as stock.

The front setup adds an additional 2.1 kg (ca. 4.5 pounds) per corner, which is significant, but there is no distinguishable difference in handling or steering. While this is extra unsprung weight, it is not rotational mass and hence has less negative impact than, let's say, switching to heavier and/or larger wheels.

[Dafirm24]

What year sls amg did you get it to work?

[tro-nik]

calipers do not match the thickness of the brake disc.
front caliper disc designed for 36 mm thick
used on the disc 30 mm

rear caliper designed for disc thickness of 28 mm
used on the disc 24 mm

Pistons may fall
rear brake shoes may fall out of the caliper

:Помогите:

[jackkk]

Same we do in Moscow. I want to make it for the front breaks, and to leave the rear stock.
This is a regular Brembo calipers with 76mm pads.





I'm not sure that there is a real need to change the rear ones, just better pads.

[tro-nik]

rotor Brembo 380-34
support Brembo (Nissan GTR35)
wheel 18" OK

[Acree]

Has anyone actually tracked on this setup?

[jackkk]

Originally Posted by Acree

Has anyone actually tracked on this setup?

I ordered my front calipers and pagid rs29 76mm pads to cover all the stock rotor and will track this set up at the end of april. For the rear I left the stock caliper with EBC yellow stuff pads. I think this should work good both on track and on the street.

[jackkk]

Brembo with Pagid RS29 76mm that will cover all the stock rotor. Will take my car back tomorrow. The weight of this rotor with connector is 100g lighter than stock, but pads are havier.

[jackkk]

Brembo gt with paid rs29 76mm which cover all the stock rotor!
The rear is stock with EBC yellow stuff.

[Lojs]

Originally Posted by jackkk

Brembo gt with paid rs29 76mm which cover all the stock rotor!
The rear is stock with EBC yellow stuff.

What size wheels are those?

[jackkk]

Originally Posted by Lojs

What size wheels are those?

19 wheels 9.5/10.5

[Lojs]

Originally Posted by jackkk

19 wheels 9.5/10.5

I am tracking on 18s. Have you ever test fitted 18s with these brakes?

[jackkk]

Originally Posted by Lojs

I am tracking on 18s. Have you ever test fitted 18s with these brakes?

This is gonna fit, but I didn't try yet.