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View Full Version : FC RX7 Brake Upgrade


matty.dc
01-27-2012, 06:28 PM
I've been looking at different options to put some better stopping power on the E30 for some time now. I looked at the option of the Massive brake kit, Brembo, etc.

I finally ordered the parts to a different set-up from an "89 Turbo II FC RX7. This set-up was by the far the most cost effective. I purchased the slotted rotors, calipers(rebuilt), and the Hawk HPS pads from R1conceps.com. I pieced together my own adapter to go from our bubble flare to the RX7's inverted flare.

All together the package cost me $300.

The bracket DWG I used was from this site:
http://www.strathspey.co.uk/bb/phpBB3/viewtopic.php?p=193&sid=820faa6786aa93cbf4d15691e165d14c

Here's a picture of the parts and I'll post more when I install them on the E30

craz azn
01-27-2012, 07:22 PM
Are you getting your hubs machined down, or did you get the rotors turned out?

voluted
01-27-2012, 07:24 PM
Thanks for the info matt, let us know how they feel after you put them on *th-up*

**edit: You should include shipping and taxes in your total total cost :P

matty.dc
01-27-2012, 10:42 PM
Rudy: I'm going to turn the rotors down and not modify the hub.

Voluted: That is a total cost. All orders are shipped free within the US. I used a holding service called www.kinek.com. They charge $10 a package and will hold it for 30 days. So I went to the outlet mall over there and on the way went to pick up my parts. $300 total cost. Maybe plus or minus $5.

Dissembler
01-27-2012, 11:55 PM
Can't tell from the pic, but do those rotors have the hat with all the holes in around the outside? I used OEM blank rotors for my setup, and although they have held up nicely to a full season of track abuse, I would still prefer a rotor with a solid hat. How much were those rotors?

canuckder
01-28-2012, 01:53 AM
i also went this route i havent put much time on them yet. So far they are amazing tho. I went with hawk hps and theyre killing the vsxx's with dust

MaxBell
01-28-2012, 12:48 PM
Holy dude, can you link me where you bought these? I've gotta do brakes on my coupe and it was about that price for stock stuff.

matty.dc
01-28-2012, 01:08 PM
Can't tell from the pic, but do those rotors have the hat with all the holes in around the outside? I used OEM blank rotors for my setup, and although they have held up nicely to a full season of track abuse, I would still prefer a rotor with a solid hat. How much were those rotors?

Yes the rotors have the holes in the hat. I dont think you can get around that with the corrado rotors.

Maxbell: R1 has an online store, but the price will be $40 higher if you go through there. Go on ebay and message R1concepts for these parts and you'll save the money as well as get free shipping.

everlast
01-28-2012, 01:13 PM
Holy dude, can you link me where you bought these? I've gotta do brakes on my coupe and it was about that price for stock stuff.

Max, buy these from me, please. I have all the info to get everything else you need for a hugely baller setup.

http://www.maxbimmer.com/forums/showthread.php?t=147201

MaxBell
01-28-2012, 05:41 PM
AHH YESSss... Hugely baller you say?! These do well to make coupe stop fastaa!

http://geektyrant.com/storage/2011-post-images/paimai.jpeg?__SQUARESPACE_CACHEVERSION=13202522004 71

I SHALL TEXT YOU!!

supernaught
01-28-2012, 08:56 PM
your genius-fu is strong ^^

Has anyone ever heard of bolting any other calipers to the e30 strut, other than rx-7, willwood, or porsche? as in - stock caliper from another model or make with a combination of rotor? anything with a comparable bolt spacing on the caliper bracket? Maybe I'll make a separate thread...

Dissembler
01-28-2012, 09:11 PM
^seperate thread required lol. I will only say that the current crop of upgrades for the front are numerous enough, plentiful and proven so I really don't think its worth it to try and design something else. You can also use Corvette calipers (not sure which rotors go with them or how the calipers bolt on, but I've heard of it being done) and I heard of one guy on E30Zone who was using Alfa Romeo calipers.

I think that the rear brakes need more attention then the front. There are only 2 kits (that I know of) available for the rear (from IE and Massive) which cost in excess of $1000 and are huge. I wish there was an upgrade for the rears along the lines of the RX7 calipers for the front (say 2 piston, 10" vented rotor or something)

MaxBell
01-28-2012, 09:26 PM
I think that the rear brakes need more attention then the front. There are only 2 kits (that I know of) available for the rear (from IE and Massive) which cost in excess of $1000 and are huge. I wish there was an upgrade for the rears along the lines of the RX7 calipers for the front (say 2 piston, 10" vented rotor or something)

This.

matty.dc
01-29-2012, 01:01 PM
I searched on google on what people were doing with the rears and some guy put on 2 POT nissan GTR calipers and an older supra rotor that were re-drilled to 4x100

InfiniteDice
01-29-2012, 02:05 PM
I've seen pics of a jaguar swap. Not sure where, and it was a long time ago.

MaxBell
01-29-2012, 05:08 PM
I searched on google on what people were doing with the rears and some guy put on 2 POT nissan GTR calipers and an older supra rotor that were re-drilled to 4x100

I'd hate to redrill my rotor every time I tried to replace it...

Dissembler
01-29-2012, 05:36 PM
I've seen pics of a jaguar swap. Not sure where, and it was a long time ago.

You mean with the in-board brakes?

E30M42cab
01-30-2012, 01:02 AM
I've seen an e30 with motorbike calipers on his auto-xer. I don't remember what discs though... I'd have to hunt down the article.

clementine
01-31-2012, 03:35 AM
does any one know if the calipers of the newer generation rx7(92 and up) are the same as the older generation rx7(86-91)

Chefskinny
02-01-2012, 10:02 PM
clementine I read on another forum somewhere that they are, but don't trust my word.

What wheels are you guys running with the rx7's calipers?

Dissembler
02-01-2012, 10:16 PM
does any one know if the calipers of the newer generation rx7(92 and up) are the same as the older generation rx7(86-91)

Exact same. The 92+ calipers are thicker then the 86-91, but the critical dimensions are all the same, as well as the brake pads.

For a list of compatible wheels, search r3v for the "rx7 wheel fitment guide"

matty.dc
02-01-2012, 10:31 PM
Just an FYI if anyone that wants to do this set-up is having difficulties finding the correct hardware around town you can use E30 flywheel bolts P/N: 11227805885 which is an M12 x 1.5 x 28mm(use these to mount the brackets to our strut housing) and use the original caliper bracket bolts to mount the RX7 caliper to your bracket P/N: 34111118948 ( M12 x 1.5 x 32mm) just in case you wanted new bolts. In both cases I believe they are grade 12.9 (imperial grade 10).

clementine
02-02-2012, 01:55 AM
awesome, thanks. i appreciate it

matty.dc
02-02-2012, 11:17 AM
clementine I read on another forum somewhere that they are, but don't trust my word.

What wheels are you guys running with the rx7's calipers?

I have 17 x 7 ESM 003 w/ 25mm offset on the front right now, but I will also check my Konigs which are 16 x 7 w/ 40mm offset and a 20mm spacer (which comes out to et20 wheel)

matty.dc
02-03-2012, 06:46 PM
In the end on the et25 17 x 7 esm rims I will have to get a 3-5mm spacer for the fronts but my Konig 16x7 et40 fit nicely with the 20mm spacers