Racing Brake Caliper Rebuild Kit

[Focusedintntions]

Warren has asked me to gauge interest to see what we would think about a full caliper rebuild kit for our calipers. This kit would include all the seal and rings, in addition to new pistons which more robust and not prone to cracking. Please vote and post up any opinions you have in this post. He'd like to find a group of us for a group buy for the initial production run.

I know I am for one very interested in this and you can consider me one the guinea pigs happy to test stuff for him

[chachacha28]

I would be interested. It would have to be better or cheaper than this kit from turner, which is $450 for seals/pistons for both front calipers.

[BiscottiGelato]

Originally Posted by ezeedee

I would be interested. It would have to be better or cheaper than this kit from turner, which is $450 for seals/pistons for both front calipers.

x2. I am planning to run without shims until I kill those pistons. Or should I just upgrade the pistons the next time I do rotor and pads?

The best thing that RB can do though, is make a brake adapter so we can fit some bigger rotors on this darn thing!!!! Did I hear Dieselboost?!!!

[Focusedintntions]

Hey guys sorry for my absence since last week, but I was VIR doing some Porsche hunting this weekend Anyways got an email late Thursday afternoon after I headed out on the road and didn't get to post up any of what he sent me. He is checking in on this forum and reading what people are saying so if you have questions/concerns post them up.

"Not only we will beat Turner's prices but we make better material in seals and boots than OE, let alone the pistons (our pistons will have vents to further prevent heat transfer to fluid). By using our pistons you can also eliminate the use of titanium shims which cost another $150 and you also lose the braking efficiency." - Warren

[Focusedintntions]

Originally Posted by BiscottiGelato

The best thing that RB can do though, is make a brake adapter so we can fit some bigger rotors on this darn thing!!!! Did I hear Dieselboost?!!!

Dieselboost will be the past....stay tuned

[chachacha28]

well thats perfect timing, i already have the dieselboost adapters and the titanium shims!

my interest is peaked

[Focusedintntions]

So I just had a 45 minute phone convo with warren and I'm super excited. I should be getting the first set of pistons once they are ready for testing as I just noticed mine are crumbling. We will also be developing another kit to go with it. From what was discussed nobody should need to spend almost 3k on a bbk. I'll fill in more once I'm on a pc and can type properly.

The things I do for you guys. Making myself a guinea pig and all haha.

[BiscottiGelato]

pistons and ADAPTERS!!! Adapters needs some love too...

[Focusedintntions]

Originally Posted by BiscottiGelato

pistons and ADAPTERS!!! Adapters needs some love too...

How bout adapters for a 350mm rotor? Would that work bc I may or may not be getting some

[Focusedintntions]

So here's the email i got from Warren last night:

"Since the OE front caliper is obviously over-powered (see below), compare to GTR and just picture a good & compatible caliper and rotor set up.
GTR = 28, 30,32mm. Total area = 4252mm2 (6.6 sq in) Rotor size = 380x34 for 2011& earlier, and due to brake issue Nissan/Brembo increase the rotor size to 390x33 for 2012,
135i= 28,32,36mm. Total area = 4874mm2 (7.56 sq in) Rotor size = 338x26 (RB makes to 338x28)
So for a more "compatible" brake torque (force/leverage) combination, while retaining the stock caliper, the rotor size must be oversized to its maximum at 350x28 that OE caliper can fit in.
We can design a space up kit allowing the caliper to accommodate 350mm rotor (same size as Porsche 997 rear).
Provided the caliper components (seal, boot, and piston) are also upgraded, I feel very confident that this set up would be adequate to handle most demanded heavy tracking task w/o any issues. I have just released the stainless steel pistons (front and rear) production.
Please keep your members informed of this proposed solution, and I will keep you posted on status of development."

[Focusedintntions]

Basically we both came to the conclusion that our caliper housing are actually very robust and in reality almost too robust for such a small rotor. We have larger pistons and our caliper can apply a lot more pressure in a smaller area than the GTR which has a 30% larger pad than us (which has had similar brake issues with over heating).

In about 6-8 weeks I should have a full set of pistons, seals, rotor, bracket, and a new race spec pad from Warren to test out. First stop will be VIR

[uberschnell]

Would definitely be interested in a set for the rear brakes also

[DriveHard]

Im in..

since i will be selling my BBK once my lease is over, i forsee it may be beneficial to have at least the parts to rebuild them available to the buyer, or even having them rebuilt prior to sale..

These kits will also be good as theses cars get older and they become someones track toy as opposed to their DD and weekend track toy..

The odd thing is(in my case) is that my caps and seals are just fine...and thats after many, many track days ....almost 21 months now...??????

None the less Ill have a great set to sell all upgraded even with new bolts

Thanks for the leg work on this one also Focus!!

[BiscottiGelato]

Are Porsche 997 rotors direct fit on the 135i front wheels tho? Otherwise adapter to 345mm x 28mm sounds like a proven method with readily available parts. Just need the damn 'Dieselboost' adapters.

[Focusedintntions]

Originally Posted by BiscottiGelato

Are Porsche 997 rotors direct fit on the 135i front wheels tho? Otherwise adapter to 345mm x 28mm sounds like a proven method with readily available parts. Just need the damn 'Dieselboost' adapters.

The stock rotors won't work, however, RB has a ring that could be used with our hats The issue with the e46 czp rotor is the metal is soft and won't really withstand track abuse and you can't use the stock wheels with it. This kit will allow use of the stock wheels

[BiscottiGelato]

Originally Posted by Focusedintntions

The stock rotors won't work, however, RB has a ring that could be used with our hats The issue with the e46 czp rotor is the metal is soft and won't really withstand track abuse and you can't use the stock wheels with it. This kit will allow use of the stock wheels

Which RB ring and which hat are you talking about? Thanks~

[Focusedintntions]

Originally Posted by BiscottiGelato

Which RB ring and which hat are you talking about? Thanks~

the porsche 350x28mm...it's the rear rotor from a 997...

[BiscottiGelato]

Are you saying this thing direct fits our front em.. hat?
http://www.ebay.com/itm/Porsche-997-...-/390358518783

But as you go to two piece solutions, it gets crazy
http://www.racingbrake.com/REAR_PORS..._11_p/2180.htm
http://www.vividracing.com/catalog/b...-p-104849.html

[Focusedintntions]

Originally Posted by BiscottiGelato

Are you saying this thing direct fits our front em.. hat?
http://www.ebay.com/itm/Porsche-997-...-/390358518783

But as you go to two piece solutions, it gets crazy
http://www.racingbrake.com/REAR_PORS..._11_p/2180.htm
http://www.vividracing.com/catalog/b...-p-104849.html

Option 1 you pointed is not it....kinda like option 2 but it fits our hubs and has the proper offsets and back spacing. Pricing isn't known at this time...hopefully though shouldn't be too much more than the current 2 piece rotors for the 135 that are offered.

[Focusedintntions]

Update from Warren:

New brake system and required components for caliper upgrade were designed and production released.
It will take about 6-8 weeks to expedite due to other brake projects which we have pre-orders. You have to convey to your guys that this type of retrofit work (to retain part of OE set up) is far more difficult and risky (for investment return) than building a brake kits, however the parts will be made available as scheduled.

[icabod7]

"Risky" in the investment sense? Meaning this will be expensive?

Obviously not "risky" in the "it may not work properly or last" sense, right?

[Focusedintntions]

Originally Posted by icabod7

"Risky" in the investment sense? Meaning this will be expensive?

Obviously not "risky" in the "it may not work properly or last" sense, right?

Risky in the sense he'll invest his own money and time into making this product for us and then nobody will buy it. This community is finicky...you never know what people are willing to invest and buy into.