Porsche Brembo 996 BBK conversion

[Thonas]

Do they both have the dampening weights at the top?

yes and I used new shims each time.

[r4dr]

yes and I used new shims each time.

Funny, I just started getting a squeal when I do medium-strength brake events coming to a stop at low speeds. If I lighten up pressure on the pedal, it goes silent. It's not a "screech" as much as a resonance-sounding kind of wail. I'm not running any piston dampers (I ripped them out, but one caliper still has the things rusted into the caliper pistons) but I believe my pads have the vibration dampers. I'll have to double check.

Does that match what you're experiencing? These calipers aren't on an M3, they're on a 997.2, but that shouldn't change anything.

[Thonas]

Funny, I just started getting a squeal when I do medium-strength brake events coming to a stop at low speeds. If I lighten up pressure on the pedal, it goes silent. It's not a "screech" as much as a resonance-sounding kind of wail. I'm not running any piston dampers (I ripped them out, but one caliper still has the things rusted into the caliper pistons) but I believe my pads have the vibration dampers. I'll have to double check.

Does that match what you're experiencing? These calipers aren't on an M3, they're on a 997.2, but that shouldn't change anything.

Yes, that sounds like it’s the same. It also will not squeal when you stop quickly with firm pressure.

[Arith2]

Yeah the dampers are extremely essential to knocking out the vibration. I live with the squeal so I don't have them rusting inside my calipers.

[elbert]

I have the Rally Road lines and brackets for the rear brakes. Included in the mix were 4 copper crush washers. Any idea where they go?
I tried in-between the line and caliper, but the gap is too big and the washer floats around.

(I can't remember if Rally Road included instructions -- if they did, I can't find them, and I apologize if this was covered in them.)

[r4dr]

Isn't it a banjo bolt into the caliper? The crush washers should go on either side of the eyelet that the banjo bolt goes through.

[elbert]

OK, mystery solved -- I heard back from Eric at Rally Road.
Those washers were shims for the caliper brackets, not crush washers.
.
This reminds me that I forgot to update the following:

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 was able get the smaller boots to seat. After Girodisc checked if the parts were correct (they were), the suggestion was to use a block of wood and a c-clamp. I used the Girodisc pad spreader, which got them to seat all the way.
One important detail is the boots need to be installed dry. I got a little assembly lube on one of the boots, which kept popping off, even with pressure. I cleaned it up, and it stayed seated.

[Bigo1087]

Anyone have any tips on were to source 996 Rear set 996352421 996352422 ?

[Casa de Mesa]

Anyone have any tips on were to source 996 Rear set 996352421 996352422 ?

Are those the caliper part numbers? (responding via mobile, away from my laptop)

If yes, eBay always has these available. So long as nothing major is wrong with them, you're good. You're rebuilding and refinishing them presumably, so the risk is minimal IMO. eBay is where I got mine.

[Bigo1087]

Yup those are the numbers.

I actually just saw a Low milage 28k set in near dam mint condition on eBay. Shouldn't need rebuilding I called up the supplier directly and just bought them.

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[Thonas]

I have to say that this modification has made me hate my car. The squeal makes me avoid driving it. It is so intrusive. Does anyone know of anything that can be done to fix this or if this is also an inherent problem with Brembo BBK’s in general like this set,

https://www.turnermotorsport.com/p-338287-e46-m3-z4m-brembo-gt-355mm-front-big-brake-kit/?pdk=AgE

[Titaniu//M]

I have to say that this modification has made me hate my car. The squeal makes me avoid driving it. It is so intrusive. Does anyone know of anything that can be done to fix this or if this is also an inherent problem with Brembo BBK’s in general like this set,

https://www.turnermotorsport.com/p-3...e-kit/?pdk=AgE

I have these brakes on my car and do not get any squealing. Are you running dampeners? Maybe it is the pads you are running?

[DvSkD4]

I have to say that this modification has made me hate my car. The squeal makes me avoid driving it. It is so intrusive. Does anyone know of anything that can be done to fix this or if this is also an inherent problem with Brembo BBK’s in general like this set,

https://www.turnermotorsport.com/p-3...e-kit/?pdk=AgE

Check your clearances and make sure nothings rubbing


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[Arith2]

I have to say that this modification has made me hate my car. The squeal makes me avoid driving it. It is so intrusive. Does anyone know of anything that can be done to fix this or if this is also an inherent problem with Brembo BBK’s in general like this set,

https://www.turnermotorsport.com/p-3...e-kit/?pdk=AgE

Make sure you are running updated pads and spring kits. Lube all contact surfaces but don't go nuts. Get the sticky dampers that sit on the back of the pad. Look up my post of a Porsche bulletin about why brakes make noise. It's not unique to this mod.

Also remember these pads and calipers were not engineered to function with our rotors. Results will vary. My car squeaks like crazy with genuine Porsche pads. Oh well. The braking is far superior to stock I live with it.

[Maxhouse97]

I’ve read that powder coating calipers is not recommended for calipers. My preference is to powder coat my calipers due to the fact that I have a great powder coater nearby. However I am tracking the car so I am concerned about its ability to withstand the heat. Anybody successfully powder coat their calipers for track use?