I thought Stillen was going to produce a set of brake ducts that are compatible with the standard front facia "fangs".

Hi there, good list so far.

Just thinking you might want to consider adding some approximate wheel fit info to the BBK's as well. That seems to be a very common question that comes up.

Plus, NACA ducts only work in a laminar air flow field. Without wind tunnel testing (or careful track testing if you now how to do it), there is no way to assume the flow is laminar and not turbulent. Once the flow detaches, NACA ducts just don't work. Spinning wheels and tires are great at messing up air flow!

Hello, As far as you stating that we are one of the only companies to make a floating front and rear set of rotors for the Akebono's.... Well, the other company you mentioned two piece rotors are made of just common grey iron and the hats are not even made of forged billit aluminum like ours, those rotors are also NOT floating, and to my knowledge they have not even made the rears as of yet, just the fronts. It is more of a feeler if I am not mistaken (if someone actually has them on the rear please correct me if I am wrong).

As with most of our designed and built products, track driving was the main focus when designing our heat treated, stressed relieved, gas vented, full floating, two piece rotors. No corners where cut at all when creating these rotors. I assure you that you will NOT find a better made rotor for this brake kit (or almost any other brake kit). We have had our complete set (front and rear) on several cars now. There are a few customers we have these rotors on their cars here in the US, and a couple more orders are being filled here currently... I have a customer in the Austria/ Germany area with a Z34 who has our rotors and has logged many, many track days on them, he couldn't be more pleased.

Let me know if you have any questions, just PM me on here or feel free to call or e-mail.

Scott@RelentlessAutosports.com
619-654-3585

:roflpuke2:

project mu has a 2piece rotor..scr pro..

http://www.project-mu.co.jp/matching...-matching.html

Endless BBK

370ZTUNE.com

Brake Duct DIY
 

I finally completed the brake duct DIY.

http://www.the370z.com/diy-section-d...ing-ducts.html

Forgive my ignorance but I have one of the ever famous stupid questions. Although I can tell the difference between a 1 piece and 2 piece rotor. What is the performance gain of 2 piece of 1 piece? Why is it "better"?

less rotational mass.

In addition to the "less rotating mass" it also means less unsprung weight. The 2-piece front rotors are more than 10 pounds lighter per corner on average.

2-piece rotors have an aluminum hat (preferably billet) and a iron ring. They can be bolted together in different ways, either fixed mounts or full floating mounts. The full floating setup allows for a larger temperature differential between the ring and the hat as it allows for more expansion, however it requires more maintenance, it is typically only applied in racing setups. The fixed mount setup can move as well because the 2 metals will expand at different rates, however their movement is limited by design.

2-piece rotors in the rear application may use an iron hat in order to have a more durable e-brake functionality. If you are only using the e-brake as a parking brake an aluminum hat is perfectly acceptable provided an appropriate thickness is used.

^^ Nice post and a perfect explanation. :tiphat:

great thread : )

anyone have any experience with the carbotech bobcats? I'm after a semi street/track pad but didnt want the squeeling of the carbotech xp's/hawk hp+

The Bobcat's do well on the street and auto-x but will wear down to nothing on the track in a day. A friend of my with a Corvette Z06 tried them on the track and found out the hard way by wearing them down to the backing plates and damaging his calipers. He is an older guy and fairly conservative driver.

Is the squeal and brake dust that bad on XP10's?

Im reviving something thats a little old, but these are only front :( So far Relentless Autosports are the only ones to be making a 2pc rotor for the Rear 2Pot Akebonos.(you have it listed that racing brake does as well but i checked they only make a Front 2piece rotor) with the RA ones it involves a little modding because of rotor size. Anyways thanks for this post, ive been stressing over what to buy for a while now and this helped out quite a bit. +1

DriveLineEric posted these:

http://wp-content.rpmware.com/wp-con...es-580x490.jpg

580x527.jpg
4000 Series:
42314BLKSL
42314BLKSR
42314XS
42314BLKXS
42315SL
42315SR
42315XS
42315BLKXS

http://wp-content.rpmware.com/wp-con...es-580x490.jpg

5000 Series:
52314BLKSL
52314BLKSR
52314XS
52314BLKXS

^^ As everything and everyone else... they ALSO are only available for the fronts. :shakes head:


So, after all this time there are now 5 companies that I know of in the world that make (just) a front two piece rotor for the Akebono Sport brakes. (which is much easier than the rear). Yet still none of these companies besides (little old us) Relentless Autosports has put the time, effort, and money into offering a matching rear 2 piece rotor, and none of the other companies even offer a full floating option for their fronts :icon14:. Not to mention the non-steller quality of material used by most of these companies in everything from the hardware, to the material (iron alloy) used in the casting of the outer rotor piece :shakes head:. I expected better.

I am a little discouraged by this, mainly because with us being a small manufacturer without the luxuries that some of these bigger brake companies have... it is hard to justify the very slight profit margin that we make off of our RA rotors. When we use superior material and still are very competitively priced, if not lower priced than the competition.... I was hoping there would be a worthy front and rear option out there by now other than ours so we can stop making these. The time involved, work involved, and material costs alone are hardly worth it.

Scott you have me sold, just dont need to replace my stock ones yet. give us some time man, people will start needing replacements soon.

how deep of a purple can you anozide the hats????;)

We also carry them as well.

http://www.the370z.com/driveline-mot...now-stock.html

Bump for a great thread! Nice job Victor.

Thanks, and hopefully you are right :tiphat:


I can go as deep as you want me to... ;)

(I seem to say that all the time) :p

good brake thread

Yeah good thread.

do you have some advice/input on the DBA 370Z/G37 2-Piece Slotted Front Rotors that are in Z1 motorsports site???

would it be a good upgrade for track?? i look like very cheap for me...

if dustin is around, advice would be great..
thx

Maybe a newb question but never upgraded muh brakes to a bbk b4.
If you were to upgrade to a BBK for example.... Ksport. would that mean any future brake jobs you would need to purchase the replacement pads & rotors from Ksport or will any pad fit or rotor (given the rotor is the same diameter)?

It all depends on the shape of the pad needed. Sometimes you can buy aftermarket pads such as Hawk, Project Mu, etc.

I had 6 piston Alcons on my B6 S4 with the rear Alcon rotors as well, with XP8 pads all around. The best mod for the money as they make the fat-assed S4 really stop and I could NOT get them to fade a single bit, and I punished them greatly. Too bad the 4.2L motors in the B6 are a ticking time-chain tensioner and chain-guide time bomb waiting to go off to fix for 5K. Oh well, I'm much happier with the Nismo anyway. Who sells the Alcons for the 370Z? Or just get the XP8 for my stock calipers? The Alcon calipers were a 1 piece cast design, very rigid.

Price for hawk pads and stoptech lines plz... :tiphat:

We fitted Alcon Superkit to 370Z track car on Wednesday. It is too soon, to give genuine feedback, but it seems to be best mod for this car so far.

The one thing, what we changed are pads. Instead of street Pagid RS9-2, we fitted RS29.

Some pictures of this kit below.


Alcon brakes: Nissan 370Z Alcon Superkit ( big brake kit )

http://www.blitz.home.pl/blogspot/ni...-front-bb2.JPG

http://www.blitz.home.pl/blogspot/ni...-front-bb6.JPG

http://www.blitz.home.pl/blogspot/ni...front-bb12.JPG

More pictures here :

http://alcon-brakes.blogspot.com/201...big-brake.html