SomeGuy_sg

Interesting thread :P
I wonder how it will turn out. Weird how the evo's brake disc are so closely matched to the FC.

More pics :P

owen is fat

okay so you turned down the O.D. of the rotor so it would fit the setup without rubbing on the bridge/top of the caliper? that sounds like a pita but nothing too bad like I initially thought.

the other option is this - instead of just drilling out the holes on the FC knuckle, have a machine shop MILL them out and make the new center of the hole about 1/16" farther out so the caliper will clear over the O.D. of the rotor.



I work at a machine shop and stuff like that is easy peasy if you can find a simple way to hold the knuckle on the table of a vertical mill.

Project7

iTrader: (16)

OK, here is the next installment of pictures. I took some of the caliper attachment points, the calipers and rotors. I also measured the caliper cups and rotor dimensions.

FC Stock Caliper Cup OD = roughly 1 1/4"
Evo Brembo Caliper Cup OD = little over 1 3/8"

Stock FC Rotor OD/Thickness = 10.5" / 7/8"
Evo Rotor OD/Thickness = 12.5" / 1 1/4"

In the fourth picture down you can make out the Brembo caliper part number.
06B20 1











I should have all the needed fittings and lines tomorrow to start bolting them up on Saturday. Then I can determine how thick I will need to have the wheel spacers. Unfortunately I don't think the offset on my rims will clear the calipers. Then I might replace the studs with longer ones depending on how thick the spacer has to be.

I've seen a couple comments about the machining of the rotors. I'd rather machine the rotors than the caliper attachment points on the spindle to move the mounting position. I personally didn't like the idea of a bracket their either, which only left the rotors. I haven't had a chance to check Brembo's site yet for rotors that would fit without machining.

http://www.brembo.com/ENG/catalogo_AM/2007/index.html

Black91n/a

You might also be able to piece together some rotors from parts available from Wilwood, AP, Coleman Racing or other sources.

nr2180

This is some info for anyone that is thinking about doing this upgrade. Just some other cars with brembo's that should have the same mount spot as the Evo's.

Ebay 30 bux gets you any color Brembo brake look caliper covers. j/k

Acura TL, JDM DC5
BMW M series
Cadillac V series
Porsche Boxster S, 996T, 911T, 944T
Subaru Impreza STi

I am sure there are more but I know those for sure. Some of those don't say Brembo on the front side of the caliper. Like the Acura TL says Acura and the Cadillac's say VS, but on the back side they have Brembo made into the caliper. Just a note if you are looking for show or track.

Another thing to note is the newer Porsche's look like they have four piston rears. Possible better rear upgrade then the third gen upgrade. I am not sure about the mounting though, but the 944T is the same configuration as a FC so the rear brakes on those might be close to mounting on a FC spindle.

Havoc

you didnt happen to weigh the difference betweent he two did you ??

Looks good mate If they dont fit your wheel's I'll buy them

Black91n/a

350Z track model too.

Basically anything with more than 1 piston in the rear, and maybe some single piston ones too have the internal drum parking brake, making it incompatible with the FC. The rear doesn't do that much of the work anyway, and the FD rears combined with proper proportionning should be able to balance out basically any front setup. Besides, the Corksport kit uses 99+ FD rotors that are 12.5" in diameter, that's huge for a rear setup.

owen is fat

yeah that is beefy nice.
so the corkesport rear kit uses those big mega rotors with the stock FC rear caliper?
nice idea to compliment this big brembo front setup.

I love DIY stuff like this that is so much cheaper than buying a "gran turismo" brake kit from brembo @ $2500 or more.

Project7, nice pics!

TitaniumTT

$3,100 is the list on it. But there is a HUGE difference between Brembo aftermarket/race (which is what you're getting) and Brembo OEM. That kit - well - the FD kit anyway uses the F50 calipers and a lightweight 2piece rotor. All the problems and fears and questions that are being asked in this thread have already been addressed, researched, solved, tested and retested and the of course backed buy some of the brightest engineers in thier field. That's what you're paying for when you buy a kit like that. It's like buying a Motec over the haltech - it costs ~ the same to build either ECU but the Motec is ~400% of the cost.

TitaniumTT

Don't get me wrong I think this is a FANTASTIC idea and a friend of mine and I are trying to put something together ourselves for track use and this is certainly a plausible route to go. All I'm saying is don't discredit a $3,100 brake kit as something that is worthless and overpriced.

Project7

iTrader: (16)

^ I agree with you, but I'm a baller on a budget and this setup nearly found me.

I'll bust out the scale tonight and weigh each caliper. The Evo rotors are definitely heavier than the FC rotors and should add a little to the rotating mass, but I think the benefits will out weigh that. My car has the power to push them too.

TitaniumTT

So am I!!

I think it's a fantastic idea and thus far the excecution is phenominal. I'm loving it actually and despite my best man's objections, might try it myself if the math re: pedal trave/pressure works out.

As for the rotors - have you thought about locating a two piecer? From what I understand it's a matter of a few measurements on caliper placement as it relates to the rotors mounting surface and they just bolt on different offset hats to place the rotor where it needs to be,

Project7

iTrader: (16)

Yeah, maybe down the road, but I already had these. I can only imagine that the two piece rotors are pretty expensive. I am sure they are well worth it, but I just don't have the loot for those right now. I'd rather try that Corksport rear upgrade to try and better balance out the Brembo front setup first.

SouthSideSlider

next time im up at my uncles place i check and see about the 944T brakes unless someone else has checked by then.

Black91n/a

Wilwood makes some 12.4" x 1.1" rotors, and some 12.31" x 1.26" rotors that might work with some custom mounting hats (unfortunately they don't seem to have any that'll fit with such a low offset).

Coleman Racing will also get you custom rotors and can probably do custom hats too.

owen is fat

I dont think you'll find any other rotor that will work without costing much more (for a 2-piece setup) or requiring even more work to fit because of the offsets and dimensions are so different from rotor to rotor, there are not too many that are really close to one another... AFAIK.

I think what you have done so far is as good as it will get for keeping it easy to make work, fit and easy to replace.

HotRodMex

iTrader: (3)

You haven't scoured the Earth for rotor dimensions, I see. You would be surprised at how many rotors are within millimeters of each other. Did you know Honda Odesseys use 12x1 inch rotors? Or that you could get 13 x 1 inch rotors for a SN95 Mustang Cobra for $35 a piece from Napa? Not necessarily applicable to this discussion, but it's good info to have when trying to make your own BBK.

If you want a really good resource of rotor dimensions, then go to Disc Brakes Australia's website and find their tech documents for the rotors they sell. The 4000 series is stock dimensions, and they have every dimensions for every rotor they carry (hub diameter, offset, rotor diameter and thickness) for almost every car made.

WE3RX7

iTrader: (8)

I think this is very interesting - i love custom brakes. I cant wait to see how this turns out and good thinking/engineering on your part.

LaMAr09

cant wait to see these bolted on and finished.. I wanna know how the difference is

Project7

iTrader: (16)

I didn't get a chance to get the adaptors I need to connect the lines, but it looks like the Evo rubber hoses will work perfectly if I can find a metric adaptor.

I did manage to get the calipers mounted on the car though. One correction to a previous statement I made. I used a 15/32" drill bit to drill out the mounting holes on the spindles, NOT a 19/64". I had to shim out the wheels 3/16" to get my OZ Superlaggeras to fit. I am not sure on the back spacing of the rims off hand, but I will measure and post them up. Looks really promising at this point though. Here are a couple more snaps.

MmSadda

iTrader: (2)

Wow, that looks nice and clean! Very cool setup! I'm impressed that you're getting it done, and didn't listen to all the nay-sayers.

vipers

iTrader: (8)

sweet bro! looking good! glad you bit the big one and did this!

Project7

iTrader: (16)

I got the calipers connected and bleed using the Evo stock rubber lines. I got a great brake pedal! I need to get some 25mm wheel spacers for the offset on my Advan wheels. I expect to have some results early this week.

owen is fat

very cool. awesome setup and props for sharing.
I cant wait to hear how you think the pedal feel is and how the brake balance turns out before you add any adjustable stuff if needed.

they look great too, nice nice!

sunshine

iTrader: (3)

Any updates on this? Road test?
(I cant beleive this thread dropped to the 4th page!)
-a