Porsche Brembo 996 BBK conversion

[r4dr]

So most likely the more aggressive pads honed the rotor surface. That is very interesting, I wonder if the issue is more in the rotor surface vs pad choice? maybe switching to a different/better rotor would be the answer. Maybe rotors like these would make a difference, https://www.ecstuning.com/b-ecs-part...000505ecs02kt/

I would expect the OEM rotors to be higher quality than those ECS ones. Could be wrong though.

[Thonas]

No it doesn't, until you see people try it.

Which comment was this in reference to? I want to make sure I am not missing something.

[Tbonem3]

No it doesn't, until you see people try it.

[silaciM3]

The cm brackets, copies of rallyroad, were intended for e36 to run 996s with e46 m3 rotors (325mm).

ECS or cm got the hair brained idea to tell people that they could do it on their e46.

The 996 kit on e46 M3 is only for 345mm rotors and you shave off 5.5mm from 996 front calipers.

Having copied the RR design aside, which obviously isn’t something I’d agree with, but since the calipers can be shaved down 12mm, this leaves 3.5mm to be taken out from the bracket, so it doesn’t seem far fetched imho.

[DvSkD4]

Maybe, I bought the genuine BMW cross drilled rotors through FCP Euro so replacements will be free ... pads and fluid too

[Thonas]

My brakes were squeaking as well (CSL rotors & Textar pads), went to the track and swapped in DTC-60 pads for two full days ... when I went back to Textars it appears as though the squeaking is gone. Hoping it stays that way!


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So most likely the more aggressive pads honed the rotor surface. That is very interesting, I wonder if the issue is more in the rotor surface vs pad choice? maybe switching to a different/better rotor would be the answer. Maybe rotors like these would make a difference, https://www.ecstuning.com/b-ecs-part...000505ecs02kt/

[DvSkD4]

My brakes were squeaking as well (CSL rotors & Textar pads), went to the track and swapped in DTC-60 pads for two full days ... when I went back to Textars it appears as though the squeaking is gone. Hoping it stays that way!


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[Thonas]

It's inherently going to always happen. The brakes oscillate. I posted a technical bulletin about it in from Porsche. I advise you read it.

https://nam3forum.com/forums/forum/m...-brakes-squeal

The "fix" was throwing pads at the car. The last one I replaced Akebono with Brembo. Porsche has multiple OE manufacturers for pads.

I completely understand that this is an issue in the design but that being said, I also have a Macan Turbo. It does have a very mild squeal but nothing like the 996 fronts on my M3. if I pull up to a stoplight everyone looks and you can't even hear the radio, it is actually kind of making me hate driving the car. So before I invest in moving back to stock or another brand of BBK for the front, is there anything else anyone can think of to try?

[elbert]

Strange, mine fit perfectly, all snapped right into place. I haven’t looked to see if they stayed seated yet but I have no reason to suspect they didn’t. Are they definitely the right size? Someone on this forum who works at Girodisc happened to see my post and had to edit my order because apparently I screwed it up …

OK thanks. He reached out to me last night, so hopefully we'll get this figured out.

[repoman89]

How well did the Girodisc boots seat into the caliper? On my rear calipers, the large boots fit fine, but none of the smaller ones will seat correctly.
I tried contacting them two days ago, but haven't heard back.

Strange, mine fit perfectly, all snapped right into place. I haven’t looked to see if they stayed seated yet but I have no reason to suspect they didn’t. Are they definitely the right size? Someone on this forum who works at Girodisc happened to see my post and had to edit my order because apparently I screwed it up …

[elbert]

The calipers came disassembled so rebuilt with the Girodisc seal and boot kits. I used brake fluid as lube and pistons went in nicely for the most part. Couple were more difficult but they seem smooth now.

How well did the Girodisc boots seat into the caliper? On my rear calipers, the large boots fit fine, but none of the smaller ones will seat correctly.
I tried contacting them two days ago, but haven't heard back.

[Tbonem3]

The cm brackets, copies of rallyroad, were intended for e36 to run 996s with e46 m3 rotors (325mm).

ECS or cm got the hair brained idea to tell people that they could do it on their e46.

The 996 kit on e46 M3 is only for 345mm rotors and you shave off 5.5mm from 996 front calipers.

[silaciM3]

Has anyone ever tested the CM brackets with 325mm discs? I vaguely recall people having issues with those brackets but I can't seem to find anything now.

[Radekxpl]

I feel as though the first portion of pedal travel is doing very little. Perhaps I need to do a better job bleeding the brakes or try a replacement stock master. I was running stock brakes (non zcp fronts) with hawk 70's before this and I don't feel like this was at all an upgrade from a brake performance stand point. maybe its the pad I chose?

Dtc-70 pads vs ds1.11 is not really apples to apples comparison dt70 is more of a sprint race type of pad, has much higher initial bite than ds1.1 I think that’s why you’re feeling this difference, wears much faster is very abrasive will destroy your rotors in no time and wears out much quicker compared to ds1.11 which is an endurance pad designed to provide consistency throughout endurance race providing longer lasting rotors and pads, but is has much lower initial bite.


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[Thonas]

I feel as though the first portion of pedal travel is doing very little. Perhaps I need to do a better job bleeding the brakes or try a replacement stock master. I was running stock brakes (non zcp fronts) with hawk 70's before this and I don't feel like this was at all an upgrade from a brake performance stand point. maybe its the pad I chose?

My install feels the same way. I went back and re bled the brakes using a power bleeder and actually went around the car twice. My best guess is it has something to do with the master cylinder. I do think the around town performance is very similar but they do better in hard/track use than stock and they look a lot better!!