Did it ever came across your mind - 'what i am gonna do with my front 4 piston calipers' - after installing something bigger there?
I went to 13" 4 piston Brembo setup couple years ago for front of my drift FC, and having some spare 4 piston calipers, i thought about putting them on the back ....

How hard can it be?


I was already running rear 2005 Ford Mustang GT rotors in the back (300mm) and wanted to keep them...and of course, being able to run stock 16" FC wheels in the back for drift trainings....its easier to find free tires for 16 than 17 or 18....

In the end, its not that hard, nor expensive....but its not one of these afternoon basic upgrades either....

First come rear knuckle. I found spare on the shefl, cleaned it up a little and pressed out old bearing, installed longer wheel studs (from front of FC). All back together here :







Installing longer studs is the reason why you have to take it apart and install new bearing. If you want to use wheel spacers with own studs, you can skip this step.

Bolting on adapter is pretty simple, 3 small bolts and one bigger with spacer...









Then the ring for centering of rotor



And now rotor :

 

Here we are !






And now, special feature for those who must have something MORE

If you have cut the one of the 'eyes' for stock caliper, you can install 2 calipers. In my case it will be one caliper for normal braking and other one for handbrake - independent hydraulic handbrake. Of course, you have run new line for that handbrake...








Thats about it now, i will provide more pics and details once i`ll have it on the car, its too cold for fitting it outside

Fullsize pics here

http://rx7.cz/gallery/?Qwd=./2010-01...v=thumbs&Qis=M

 

wow......

 

Is the increased braking capacity worth the penalty in unsprung weight?

 

Your point is correct, its extra weight which could be avoid if you will use more money for lighter materials. However, this project was meant to be low-cost and it is...

It uses $20-30 of the shelf brake rotor from Mustang, no modifications
It uses brake calipers from FC (free, from wrecked FC's i parted out)
It uses longer studs from front FC hub (again, free)
And whole package of adapters, bolts and spacers to make it work is less than $150...

And obviously, its rear brake kit, which comes in question after you have done something for the fronts, and thats gonna be more expensive and add some weight too...

 

so that piece on the back of the hub first added in the 4th picture is that something you can buy off the shelf?

 

Not in every store, but yes, its meant to be offered for sale...more like made on order, probably one week waiting time....

 

gotcha. Didn't know if it was something that some performance shop sells or if it was something you designed yourself

 

Higgi you are crazy bro Thanks a lot for the products and Def keep us updated on the project



Trini

 

That's a sweet idea. Thanks for sharing!!

 

Id love to see the bias setup for this.

 

In the front i have brembos with 2x40 and 2x44mm pistons on 330m rotors.
Rear is 4x36mm i think (or maybe 35mm)

Master brake cylinder is 1" from Mazda 929 and if necessary i might go for 1 and 1/16" from Mazda B4000.

I already purchased adjustable brake bias regulator, will let u know how it works

 

 

Very Very nicely done. So who is it that makes that adaptor? you said its about a one week wait?

 

yea where did you get that adapter, looks like a pretty sweet part.

 

Neat. Per Forumla D rules if you run a hydraulic hand brake you have to have a separate real caliper and lines. I have the hydro tapped into the lines at the booster...which is wrong. Make me a kit!

 

bad ***!!!!!!!!!!!! thank you for keeping us thinking

 

where can you get that ring to center the mustang brake rotor?? and do you have to run dual master cylinders??

 

Ring to center mustang rotor was made together with adapter.
I have 1" 929 MC and so far it looks big enought for both Brembos and 4 pistons in rear.

 

PM me

 

Friend is busy now, so rather say 2 weeks, PM me if interested.

 

Now, little update.

I had adapter originally designed for Mustang rotor as described in first post and i had made and assembled that way. Everything did fit together, but it required too big spacer for wheels or different offset of wheels than what i had.

Then i came across Toyota RAV4 rotors, which are same bolt pattern, pretty much same size but deeper dish. Center hole in rotor has to be machined, no need for centering ring. Little bit machining of adapters, few spacers for calipers and shaving little meat of the knuckles to clear bolts and final product is here. Only 8 mm wheel spacer is now required and one of my sets of wheels clears it even without spacer...

I can make either version of adapter (for mustang or rav4 rotors).
In the end, it was bit more pain than what i tought it would be in beginning, but its definately doable and every other install will be just easier

 

Are u able to post price for the adaptors and the center rings for the mustang rotors??

 

i have not shipped set yet, but i expect price to be $200 shipped for either kit (adapter+rings+bolts)

 

tahts a pretty ******* good deal to be able to run an independent rear hydro for drifting.
****, im gunna have to add this to my list of parts i want.....
goddamnet

Lloyd