HOWTO: Mazda FC3S 4pot Calipers

Posted: Thu Jun 30, 2005 7:55 pm Post subject: HOWTO: Mazda FC3S 4pot Calipers

Ok,

I know I already have these brakes on my car but I know others intend to do this conversion too. Cool

I had a little search arround to see what I could find out in terms of the bracket you need to machine to fit onto the front strut so you can get the caliper in the correct place.

I managed to find this thread on the Toymods forums. It talks about a the brackets required and one of the users Hen Bokbokbok took the trouble of making all the calculations and making plans for them !!!! Worship

Please see the full details on Hens site. Please please please drop him an email and show you appreciation.

I have attached the actual images to this thread just in case they get lost in the big wide wilderness that is the internet (You never know - aeu86.org may still be around on the hachis 30th birthday). Could somebody check if Hen objects to this when they mail him (get him on aeu86.org!!!).

Hopes this helps somebody else continue this thread into a complete howto.

Posted: Thu Jun 30, 2005 8:09 pm Post subject:

Also just found out that NAMS http://www.nagisa-auto.com/

Also do a disk/bell and mounting bracket to be used with the FC caliper too.

Posted: Thu Jun 30, 2005 10:46 pm Post subject:

thanx Ian

this wil help me a lot!!

are al sizes in 'millimeters?? ( i guess so?)

Posted: Thu Jun 30, 2005 10:49 pm Post subject:

Man Ian.....your the best. Thanks for sharing dude!

Posted: Thu Jun 30, 2005 11:39 pm Post subject:

Damn - if we can get the CNC code I can probably get them made in billet

Posted: Thu Jun 30, 2005 11:41 pm Post subject:

I've sent Hen a mail asking if he would object against a howto featuring his mod. Smile

Posted: Fri Jul 01, 2005 12:46 am Post subject:

Awesomw

me want!

Posted: Fri Jul 01, 2005 8:40 am Post subject:

Hey guys. Good to see that these drawings are helping more people out. The only thing I ask is that people don't try and make money out of them. But by all means use them if you can.

Yes all measurements are in mm. And that 24.8degree measurement is a bit of a strange one. If the bottom of the four mounting holes is vertically below the centre of the stub axle hole then the centreline of the two caliper mounting holes is 24.8 degrees below horizontal. It puts the caliper in the same position as stock.

And if anyone wants CNC code for them, I can provide the SolidWorks model of the part. In 2004 version I think, and no, I can't save it to .dxf, I've already tried.

Hen

Posted: Fri Jul 01, 2005 9:30 am Post subject:

Thanks Hen! Thumbsup

Posted: Fri Jul 01, 2005 10:33 am Post subject:

Posted: Fri Jul 01, 2005 11:00 am Post subject:

You know I hate working.

Someone plz make the brackets and all necessary stuff,
and i'll just go buy the rx callipers and disks

I 'll buy the package if someones make like bolt on style Smile

p.s NICE TO HAVE YOU HERE HENS

Posted: Fri Jul 01, 2005 11:05 am Post subject:

Posted: Sat Jul 02, 2005 10:16 am Post subject:

That's amazing. You're the man Hen and Ian! Big thanks for both of you! Thumbsup

Posted: Sat Jul 02, 2005 11:16 am Post subject:

Posted: Sat Jul 02, 2005 11:26 am Post subject:

2 Ivan141:

Posted: Sat Jul 02, 2005 2:52 pm Post subject:

Hi Hen,

thankyou for coming to join aeu86.org - we are a good bunch and thankyou very much for taking the trouble to design the brackets.

Posted: Sat Jul 02, 2005 5:06 pm Post subject:

Thanks for all the comments guys. I bought a pair of FC calipers years ago without realising how hard they would be to fit. So I thought anyone in the same boat might want to know my results.

As for rear brakes, if you have a T series rear end (not sure what models you got in Europe, in Oz we got an S series (crap) rear end) then the entire disc assembly fron an RT141 Corona bolts on. Reasonable sized discs with an internal drum handbrake (good for rally/drift). Only modification is that the shock mounts on the diff need to be moved in about 10mm.

Hen

Posted: Sat Jul 02, 2005 9:49 pm Post subject:

Hen,
i have never seen a corona rt141 in Holland.. ( maybe some other dutch here??)
i see a lot of older nice japanese cars driven in australia that are here only in a museum.. ( like older corolla's, or cars like the mazda Rx3,Rx4. R100. often they used it for the dragsports.. www.fullboost.com.au in australia)

and are the adapterplates made for the original brakedisks? or is it posible to fit rx7 disks?? ( wich disks have you mounted?)

thanx again Thumbsup

!!

Posted: Sun Jul 03, 2005 1:21 pm Post subject:

Posted: Sun Jul 03, 2005 1:51 pm Post subject:

Do not forget more is not better. Bigger calipers and bigger disks means more weight. You have to find the balance. The FC 4-pot are alu so maybe they are not even heavier than OEM calipers. Getting 4-pot rears is just silly overkill. I think you only need to do the front.

Posted: Sun Jul 03, 2005 3:55 pm Post subject:

I'm not too worried about the rears either. I've seen a few japanese ae86's that had r32 skyline calipers on the back (Iida Akira and Keichi Tsuchiya I believe). But my rear calipers actually lock up better than my fronts at the moment. I think my problems mostly come from the brakepads and master brake cilinder (can never get that damn brake pedal rock hard).

Posted: Sun Jul 03, 2005 4:09 pm Post subject:

If you upgraded only the front calipers, and not using brake bias adjuster, the stock rear brakes will lock up.

Posted: Sun Jul 03, 2005 4:26 pm Post subject:

I cleaned everything and put in new rubbers in all the calipers. My master brake cilinder also has new pistons, the car still doesnt brake properly though. Maybe my MBC is still leaking internally, or my brake bias adjuster isnt working right.

Anyway, this topic is not about my brake probs but about FC calipers.
I still prefer the idea of euro carmaker brakes though, like the volvo Girling 4-pot calipers. Nothing against the FC but you dont find those calipers a lot around here.
I have also seen some weird setup with Ford Escort RS2000 turbo calipers on senna's car, which also have lots of aftermarket support.

Joined: 23 May 2007 Posts: 1 Location: Orlando Florida

sorry to be a bother, but i was serching and came acroos this. can u send the file for cnc cuttin? i been tryin to find this for months. i have the calipers. only question i have is what rotors do u guys use?

Wataru Joined: 24 Jan 2011 Posts: 74

this really good thanks for taking the time to share it Thumbsup

i just bought a set of rx7 4 pot calipers just need a set of brackets and disks what disks do you need to use with these brackets honda civic or mini cooper ???
thanks for you help