I was planning on using David Breslau's bracket kit and a set of Wilwood 4-piston rear calipers with a '99-spec rotor, but realized that the RS-spec rear calipers would integrate with the stock parking brake system, eliminating that problem.

Then I thought that maybe they'd require a bracket to interface with a '93-95 knuckle also, because of the larger diameter of the rear rotor, but was assured that Mazda hadn't changed the design of the rear knuckle to which they bolt, so the change must have been in the caliper itself.

Manny, do you have any pictures of the rear calipers, and can you give me pricing on the rear brake assembly only? I saw that you broke out the front pricing, and I could probably subtract that from the total amount you listed... but I'm lazy. :)

I want '99-spec rotors (as far as size), but will want a slotted rotor to match my AP Racing front rotors. Anyone know if there are aftermarket rotors available that will work with the '99-spec calipers? I'm sure they're available in Japan, but there wouldn't be much market in the US yet, probably. :)

I got some EBC Greens that I was going to use on the street, but they turned out to be the wrong size and I got some other pads that are supposed to be dual-purpose (as verified by brake dyno tests). The pads I ended up with are Pagid RS4-2-1.

But back to the purpose of my post, it turns out that the EBC catalog had the wrong number in it for the CP5200 calipers (I saw it with my own eyes -- not just an excuse from the shop). The catalog says #2008, but those are too small. The right ones are #2002. If you are looking for EBC pads, check out http://www.brakeco.com/. I believe ARD T2 sells them, too.

Correct EBC pad number for AP CP5200 calipers = #2002 (not #2008).

-Max

Yeah, I want to know the same stuff Jim is asking for. ;)

Jim, the EBC pad number for the AP calipers is #2002, but the EBC catalog incorrectly lists them as #2008. The correct number is #2002.

-Max

Here's a picture of the bracket made for the Wilwood Billet NDL calipers...

http://home.earthlink.net/~jimlab/pi...er/Cal_brk.jpg

And with '99 spec rotors on a car...

http://home.earthlink.net/~jimlab/pi...al_brk_rot.jpg

$225.90 for each rear calipers, $117.15 each rear rotor, no pics yet... the Type RS brakes are still awaiting paint...AIM Tuning has put my job on hold to prep their own Rx7s for this weekend's MADS event at VIR... FWIW I was assured that the rear calipers are completely bolt up, per my phone call with Mazdaspeed Motorsports Development and Sylvain Tremblay (of Speed Source Racing).

When you talk of backing plate do you mean the dust / splash sheilds that gaurd the rotor?
1R1

I have the Wilwood front set and would like to get this matching rear set, whom do i contact?
1R1

Yes, the dust shields that protect the inboard side of the brake rotors from too much rain water and road debris...

The rotors that came with the kits are Coleman rotors, on the AP bolt pattern. This is done to keep costs in check. Coleman rotors, while not the most exotic ones available, are still of good quality, and work very well for the intended application. I am awaiting word on replacement rotors, as I have been given differing quotes.
The 5200 series calipers will work with the standard master cylider, either with or without upgraded rear brakes. I have been getting inquiries about the rear brakes, and I have been recommending that people move to the 99 spec rears. It is certainly a worthwhile upgrade when using the AP fronts, though, as Michel pointed out, not completely necessary to help your braking performance increase substantially....
If there is enough interest/demand, I can put together some type of group buy for the 99 spec stuff. I would guess that I would not encounter the same delivery issues with the Mazda stuff as I did with the AP's....

Nick
www.ntechengineering.com

I'd be in on the 99-spec rears if we could do this rather quickly. I have no rear pads! :-)
Michel

I'm interested in '99-spec rear brakes also. Is there a possibility of getting slotted rotors to match the AP Racing fronts?

On Monday I will be looking into slotted and cadmium plated rear 99 spec rotors. The plating helps keep them looking new.
Anyone who is interested, send me an email at nick@ntechengineering.com by Monday morning, titled "99 Rear Brakes". Then I can know how many we are talking about.

Nick
www.ntechengineering.com

I think the 99 rear calipers are different, but use the same pads as the non-RS rear calipers. So you could get pads and just swap them into the 99 brakes when you get them.

-Max

Yes, I believe they are the same pad. Just might do that although it's usually a good idea to start out with new pads/rotors in combination to prevent premature grooving.
Michel

Hi Red(2),

If you want to use the Wilwood NDL in the rear, the pics that JimLab posted
(thanks, Jim) show the bracket I make and a 4 x 1.12 dia piston version that
should work well with most big front brake kits. This is originally from work
done by Brad Barber and other "hard core" owners, I did the final mechanical
design and machining.

Keep in mind that this is more for track cars then street, as the parking brake
function is lost, and some trimming of both the rear upright mounting points
and the caliper mounting ears must be done for clearance. However, I believe
the overall results will be better than using the "RS" rear caliper, due to the
more efficient pad design (larger, effective center at a longer radius) and four
piston geometry of the Wilwood caliper.

One note: There was mention of the CWC brake duct earlier in this thread,
and I want to clarify that the correct name is CWC/Widefoot. As my company,
Widefoot Racing, is now formally up and running (with big $$$ being spent on
shop space and equipment), I need folks to know where the parts come from.

I designed the CWC/Widefoot ducts and made the molds from which the actual
ducts are pulled. And while it's true that ideally they'd be pulling in "free stream"
air, they're still much more efficient that any of the stock RX-7 ducting, work with
wider than stock wheels, and reduce the hassle of ducted hose pickups (many of
which will choke on small hoses or bad exit geometry).

With Duane's company on hiatus, I'm now planning on being a supplier to many
of the better RX-7 vendors, such as Dave and Kim at KDR, and Nick at N-Tech.
I've got some stuff that's been on the back burner, and having my own shop will
allow proper development and distribution of the more radical parts I want to offer.

David Breslau, Widefoot Racing

Email dbreslau@mit.edu, new email and website in the near future...

Can anyone confirm how many pistons the '99-spec rear calipers have? Are they still one-piston designs?

'99 Type RS rears are exactly the same design as the US-spec rear calipers...except larger sized.

I am curious...:confused:

Do the larger RS brakes requre a larger master cylinder?

Or,

larger master cylinder is not necessary because the piston sizes are the same as the 93-95 brakes?

Sorry ,I mess up

Mr. Stock...a larger master cylinder is not needed with the Type RS brakes...

'99 FD Rx7 Type RS spare wheel/tire will run >$300!

The spare wheel size, 4 x 17, 5 lug on 114.3 mm, 40 mm offset is NOT available at the Tire Rack..

T125/70D17 Spare Tire isn't available from either Mazdaspeed Motorsports Development or Tire Rack...

I'll probably just carry around a full-sized spare wheel (9 x 17 SSR Integral A2, 45-mm offset) with 255/40-17 AVS I's.

Hard brake lines, parts F124-43-710 and F124-43-720 are not available from Mazda Japan. FWIW, both Brian and Tim of Mazdaspeed Motorsports Development say the current hard lines (from the US spec FD) will work fine!

Great news...scheduling the Type RS brake install with Advanced Import Motorsports Tuning for next Friday April 12th...so it's looking like I'll be able to test Mazda's "bad-boy" brakes at my upcoming Central Indiana Region Porsche Club drivers education event at Putnam Park, 26/27/28 April.

I plan to run EBC Green Stuffs, fr/rr, for public road use, autocross competition, and wet-track conditions, with my SSR IA2s and Yokohama AVS I's. The EBC "Greens" are made of carbon kevlar with a high friction mu of 0.45.

For dry-track use, I'll run Porterfield R4E (E for "endurance racing") fr/rr, with my SSR Comps and Hoosier R3S03s. The Porterfield R4Es are also made of carbon kevlar material with a friction mu of 0.49. Porterfield claims their "E" compound runs cooler, lasts longer, and remains fade-free longer than their regular motorsports pad compound, R4...we'll see. The R4Es have GOT to be better than the junk EBC Red Stuffs (which I melted in a day two weekends ago)!!!!

Brake pad film transfer issues (pointed out by Max Cooper), associated with swapping from road pads, to track pads, and then back to road pads, should be mitigated by using the same pad material for either (road or track) application. Again, we'll see...

If the 26/27/28 April CIR PCA Putnam Park DE is a soggy one, then we'll need to wait until the 9/10 May MOR PCA DE at Mid Ohio Sports Car Course for the Type RS brakes/Porterfield R4E pads review...

AIM Tuning's Paul D'Angelo has installed my '99 FD Type RS brakes fr/rr today.

The most labor-intensive part was disassembling the front and rear hubs to swap out the US-spec dust shields with the Japan-spec dust shields. I felt the extra effort was worth paying for, as the front shields have huge air scoops designed to divert air from underneath the car through the back of the front brake rotors.

Other than the dust shields, there were apparently no issues with the install. He did suggest I replace a right-front hard brake line because the nut is becoming stripped.

I had Paul add a personal touch by painting the rotor hats and calipers a bright silver to match the SSR Integral A2 wheels. This adds some aesthetic appeal to otherwise boring equipment:)

I test-fit the temporary 16-inch spare, and as advertised by Mazdaspeed Motorsports Development, the '99 Type RS brakes DO REQUIRE 17-inch wheels, as the 16-inch spare would not fit at all! Good thing I ordred another 9 x 17, 45-mm SSR Integral A2 mounted with 255/40-17 Yokohama AVS Intermediate to serve as my full-size spare!

My 17-inch SSR Integral A2s do fit with ~1/4-inch of clearance between the calipers (fr/rr) and the wheel rims! The '99 Japan-spec Type RS brakes DEFINITELY fill up the wheel space the 17-inch wheels provide!

So far the '99 brakes feel like the old '93 brakes during the stop-n-go traffic using the EBC Green Stuff pads...

The true test will be at Putnam Park Road Course during the 26/27/28 April Central Indiana Porsche Club Drivers Education event...

Report will follow once that event is complete!

Pictures! Pictures! Picturtes!

I also can't wait to see how they work out.

-Max