LMAO, yeah i know but if you are not the only one with clearance issues running 18" wheels then I don't see why they wouldn't consider this option for the 7's as well. Maybe you need to do some measuring or email RB with your wheel model and offset to find out.

 

I'm running 17 inch Fikses, but the diameter isnt the issue. The backside of the spokes interferes with the front of the caliper (the portion that says 'mazda' or 'stoptech' etc on it).

 

Yeah, that was my point (offset) for posting the link (sorry, not because of 18's). I have no idea if RB have a raised logo but if I understand it correctly, they will seat inwards more giving you the clearance you need, no?
http://www.racingbrake.com/RX8_FRONT...2-381-4111.htm

 

You are correct, if they offer a big brake setup for the FD similar to the one they have for the RX-8 I'd be all over it

 

howard, hope your track event went ok, any updates - reviews..........
i had a system install scheduled but have put off my buying any system until the RB 4 wheel option is available, i have been following your thread this with great intrest.......

 

i learned today that the first ontrack RacingBrake test, which was scheduled for last weekend, did not happen as the driver had an unforseen family problem.

RacingBrake did receive on schedule an initial supply of 2 piece aluminum hub rotors. these are of stock sizing and when combined w a proprietary RB pad compound (in conjuction w Hawk) should offer a substantial performance upgrade.

they are available NOW on RB's website.

forward RB events:

getting the above on track and evaluated.

availability of the larger rotors and RB front calipers and evaluation of same.

the snow is melting in wisconsin and i am getting itchy. i did bolt my new Enkei NTO3+M wheels on my car for the first time. 18 X 9.5 front and 10.5 rear. i am ready to get some brake dust on them. they look too clean.

howard coleman

 

Howard, thanks for the update, the cars are just for fun, the drivers family is priority 1
chuck
BTW folks: enjoy the anticipation, the journey is as satifying as the result.

 

..

 

Rob, I'll do ya one better

https://www.rx7club.com/showthread.php?t=611278

 

As stated before we have increased the front rotor ring thickness to 24mm from OE’s 22mm for extra thermal capacity that will fit OE caliper and pads including most aftermarket (Hawk) pads (total 14.8 mm in thickness w/shim) w/o problem.

Space when caliper pistons are fully retracted: 56.4mm
Less two brake pads: 14.8x2=29.6mm
Net space for rotor: 26.8mm

When RB two piece rotor of 24mm is installed
Net space for pads = 32.4mm(or max pad thickness of 16.0mm)

We have been shipping two piece rotors stock replacement for front and rear. However one customer reported using EBC pad which has 17mm thickness and will not fit our two piece rotor.

Prospective customers are hereby advised to verify the thickness of brake pads and make sure the total thickness is not over 16.0mm and insure the caliper pistons are fully compressed in order to fit our front two piece rotor w/o fitment issue.

 

What is the benefit of slot drilled and do these stock replacement comes in that format?

 

Link to the added "drilled and slotted" finish.
http://www.racingbrake.com/RX7_s/3213.htm

Link to the Pro & Con of different disc finishes:
http://www.racingbrake.com/main/two_piece_compare.asp

 

OK, so the OEM sized kits are completed. Have the larger/bbk kits been complete and can you explain how they will work? From what I read or rather understood, it will include new aluminum calipers (same 4-pot?) and some brackets to extend them outward?

 

go racer

this is a long thread so anyone is pardoned from reading the whole thing. i suggest you review my lengthy detailed post number 1 for background. secondly i suggest you spend some time on RacingBrake's site. there is alot of excellent engineering disclosed.

if you do the above you will appreciate why RacingBrakes are going to be on my car and i am taking off the AP 13 inch setup...

as to availability... a fair question.

i am not affiliated w RB but i do stay in touch w them. AFAIK, they are on schedule to deliver an entire FD package... the schedule is april.

the package will include approx 13 inch two piece rotors front, approx 12.7 inch rotors rear. specially sized front 4 piston RB calipers w mounting brackets and SS brakelines. the rear will use the OEM caliper w emergency brake and will relocate using a RB caliper bracket.

the package is designed to maintain the excellent OEM front to rear brake bias, and will use a special line of Hawk brakepads that work w the one of a kind rotor material.

howard coleman

 

I did read the whole thing several times and I have been interested in this for about 5 years now as I posted previously. When Stoptech did the 2-peice BBK group buy I tried to get them to do OEM size but no go. I tried Project Mu but was told would only fit the larger JDM setup.

Anyhow, before I click on "buy" I am waiting for results and more info on the BBK version. If it's not much of an improvement over the oem sized kit then it's not worth it to me. I think I will wait for mounted pictures and more feedback from your track results. I'm just impatient becuase I want to buy them now.

 

I'm in for this:

 

thanks for the link! I'm really debating about getting these rotors instead of going with BBK that others are selling.. I personally think OEM calipers are fantastic.. but what do I know.. I'm not a racer like Howard.. Depend on how things go next couple of months, I'll be ordering a set!

 

The $64,000 question for me is, how will these rotors work with conventional (i.e.: every other) brake pad in the world, track & street?

 

Is a 929 Master Cylinder needed for this set up? Why (if you don't mind taking the time to explain to a newb in brakes)?

 

no need for a master cylinder change........ since the overall brake piston area is quite similar a larger master is not needed.

the upgrade gets its performance advantage from the following:

rotor alloy presents a higher coefficient of friction to the pad
rotor alloy is capable of absorbing more heat
rotor design transfers heat evenly to hub due to centermount design
rotor vane configuration increase cooling airflow
rotor diameter greater for mechanical advantage
rotor stays true longer as it is able to expand without deformation (floats re hub)
left and right rotors so vane direction encourages flow instead of being backwards on one side.

the primary FD brake problem is the inability of the rotor to absorb the amount of heat required when the FD is driven on a road course. the calipers are not a major issue re performance.

howard coleman

 

If you guys are interested in purchasing any RB components please PM me. I will give you the club deal.

Thanks, Rishie

 

ARD T2, when it's ready in April, you will start a thread on this?

Howard, thank you for the explantion and for saving me $118.

 

i've already got a post up on these. You can preorder to get the best deal.

https://www.rx7club.com/showthread.php?t=611278

That's for the slotted only ones.

Thanks, Rishie

 

Will this brake package be enuf to handle 600rwhp in a wide body 2800lb FD at the most punishing road race courses in America? 285/18's up front 335/18's out back.

I have 13" AP fronts (Alcon rotors) and '99 RZ brakes out back with 2 piece PBR rotors currently. They have exhibited zero fade... but that was only with 440rwhp. I run Ferrodo DS3000 pads.

I am very interested in this brake package.

 

there is NO DOUBT in my mind that the rotors would be a significant overall upgrade from what you currently run. i run the same rotors as you and i will be switching. i expect the combo of better rotor and pad to be a significant upgrade. you will not gain all of the advantage unless you switch to warren's proprietary pads to match his proprietory rotor alloy.

howard