FC3 Caliper retrofit
4 Attachment(s)
I got this set of FC RX7 front calipers for free. For the price of a caliper rebuild kit, pads, rotors and the raw material needed for the new brackets, I can have a 4 pot brake setup. That is if this is going to be at all possible of course. I plan on using 01+ sport brake rotors rather than corrado rotors because I want a vented rotor for the brake ducts I will also be making.
This is a popular upgrade for E30s and Volvos which use basically just a straight bracket adapter that is offset just a tiny bit. Enter the E30 setup: Attachment 198347 Attachment 198348 Attachment 198349 And the Volvo setup: http://www.dvs.net.au/mazbrak3.jpg These guys have it easy. Now, here is a rough mock up I did on the miata spindle: http://img.photobucket.com/albums/v6...r/DSC01993.jpg The ears just dont fit the same as the other cars. I'm thinking about grinding some metal away from both until they clear better. The way it sits in that picture is nearly perfectly offset for the rotor being centered in the caliper. Here is what I hope to see through my wheel someday. The caliper is just sitting on the rotor since it wont fit correctly with the spindle in place. Attachment 198350 So after brainstorming for days, I find an article some crazy japanese guy did on this conversion. He was thinking way more outside of the box than myself and i'm wondering if this is the better way to go. http://speed.garage-tsr.com/fcstop1.jpg http://speed.garage-tsr.com/fcstop11.jpg http://speed.garage-tsr.com/fcstop12.jpg Whole article here: http://babelfish.yahoo.com/translate...rUrl=Translate I've had several captain 'n cokes at this point so sorry if this is lacking coherency. http://i276.photobucket.com/albums/k...ainMorgan2.jpg |
Hmmm. I was just thinking about what I wanted to do to improve my brakes. I'm definitly going to be watching this. Kudos for being a pioneer.
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Herro 4 rot rakes.
Subscribed. |
got a set of these calipers laying around and currently running the mtuned 11" fronts. ive been planing to swap over to the fc calipers for a bit now just havnt had the time to sit down and start cutting away at some metal to mock up a bracket. but i should be getting started on it next week ill post some pics.
not sure if its the angle of the pic but does that rotor loo off center to you? if not then this should be an easy setup since the bracket this guy used didnt have any change in offset it looked like http://speed.garage-tsr.com/fcstop14.jpg |
Looks good, but does your wheel fit? We tried this setup before our current setup but had clearance issues with most wheels we tried.
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Originally Posted by Marc@M-Tuned.com
(Post 559014)
Looks good, but does your wheel fit? We tried this setup before our current setup but had clearance issues with most wheels we tried.
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Originally Posted by Marc@M-Tuned.com
(Post 559014)
Looks good, but does your wheel fit? We tried this setup before our current setup but had clearance issues with most wheels we tried.
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Originally Posted by Marc@M-Tuned.com
(Post 559014)
Looks good, but does your wheel fit? We tried this setup before our current setup but had clearance issues with most wheels we tried.
I've been doing a lot of sitting and staring at the setup in the garage and i'm thinking that cutting the ears off is really the only way to go. I may pull the trigger and just do it this week sometime and pick up a bit of steel to make the bracket. I still need to order up a set of sport brake rotors too. |
If they fit under 6UL's these would be real winners, and the OEM look too!
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Originally Posted by aarontrini85
(Post 559019)
Xxr 522 fit that's why I got these ugly wheels and not the tr motorsports. Ill post pics when I get home from work around 5pm central time
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Originally Posted by turotufas
(Post 559134)
Which tr wheels you talkin about?
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If bundy's gigantic brakes fit under 6ULs then i'm pretty sure this setup will too. I dont have any scientific logic behind that statement fwiw.
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Does anyone have any reason to believe that mounting the caliper with the bolts that hold the caliper body together is bad? Thats the only thing that keeps bugging me about that setup. I cant think of a good reason why it would be bad in any way.
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I've seen some smaller bolts used to bolt calipers together, which would be the only reason I wouldn't do it, however these look beefy enough. Is there a reason why you're not rotating the caliper up or down a bit and using the stock mounting holes?
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4 Attachment(s)
Originally Posted by curly
(Post 559239)
I've seen some smaller bolts used to bolt calipers together, which would be the only reason I wouldn't do it, however these look beefy enough. Is there a reason why you're not rotating the caliper up or down a bit and using the stock mounting holes?
Here are some more pictures to digest after playing around with it a bit longer. I pulled the rotor forward so the offset is wrong but I wanted to see how much material i'd have to remove from the mounting ears on the caliper to get it to bold onto the stock miata caliper mounting ears. Not sure if i'd like doing it this way at all, seems like it removes too much metal. Attachment 198279 Attachment 198280 Attachment 198281 Attachment 198282 |
I think I see the problem, in order to move it over enough, it look more like X--O-X-O, leaving a big chunk of bracket to flex to it's heart's content.
And I just realized the problem with using the bolts that hold the calipers together. You'll be rebuilding the calipers any time you take them off. Oh wait, are there four bolts holding it together? Maybe not then. Still, also not the best option. |
Originally Posted by curly
(Post 559253)
I think I see the problem, in order to move it over enough, it look more like X--O-X-O, leaving a big chunk of bracket to flex to it's heart's content.
And I just realized the problem with using the bolts that hold the calipers together. You'll be rebuilding the calipers any time you take them off. Oh wait, are there four bolts holding it together? Maybe not then. Still, also not the best option. |
Originally Posted by curly
(Post 559253)
I think I see the problem, in order to move it over enough, it look more like X--O-X-O, leaving a big chunk of bracket to flex to it's heart's content.
And I just realized the problem with using the bolts that hold the calipers together. You'll be rebuilding the calipers any time you take them off. Oh wait, are there four bolts holding it together? Maybe not then. Still, also not the best option. I'm still thinking that removing the mounting ears completely and using the two big outer bolts is going to be the best option. I'm picking up some sport brake rotors from JayL this weekend so i'll be starting the main build next week. |
Very true, I had forgotten about the different pad mounting method. You currently have to remove the bracket to get the rotor off anyways, so might as well do that.
But for the love of god, once you figure this out, get them bead blasted before final install. |
Originally Posted by curly
(Post 559275)
Very true, I had forgotten about the different pad mounting method. You currently have to remove the bracket to get the rotor off anyways, so might as well do that.
But for the love of god, once you figure this out, get them bead blasted before final install. |
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