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Homemade Brake Ducts

2K views 6 replies 5 participants last post by  Strange Mud 
#1 ·
So as some of you may remember, i got some GT brakes for the Fiance for Christmas and had them powdercoated yellow http://www.mustangevolution.com/forum/f356/t362047/

I had some time to myself in the garage this weekend and figured since its not really in the budget to get her a set of ducts before our next track weekend in two weeks, and i didnt want the high speeds from the fast track to heat the brakes up enough to damage the powder coat, i should rig something up.

So, this was 75% wanting to keep the brakes cool, 25% wanting to use my new Sheet metal brake and Rivet gun i got fro Christmas. Its a win win.

So, i love reading threads with lots of pictures, so i took a ton ... more so towards the beginning, when 7:00 rolls around and you start hearing "are you going to be done with my car soon?" its just time to be done lol.

The initial idea was to just blow some air in the general area of the hat and rotor. I believe the outside of the wheel well creates a low pressure zone, effectively sucking air through the vanes of the rotors. To capitalize on this, i just need to blow some air in a generally "that way" direction, and make a "catch" so to speak on the back side of the rotor to try to funnel the air in.


Unfortunately there was a 2-3" vertical difference between where that pipe came out, and where i was hoping to mount to the hub (i just removed the dust shield and was using those holes as potential mounting points) so it was back to the drawing board.

Luckily, idea 2 was MUCH better, and i'll show you that from start to finish now. I realized that i had enough hose to effectively just make some impromptu ducts, i just needed to design a small "carrier" of sorts on the back of the rotor to hold the hose.

I started out on posterboard, that sheet of aluminum was about $35, so i wasnt going to waste any of that.


Transferring to the aluminum, measure twice, cut once ... also dont assume the piece your working with is actually square just because it looks square :banghead:


Some big ass scissors made short work of the sheet metal, which in hindsight was WAY too thin. The final version has 3 layers of the upper carrier and two layers of the lower put together for some rigidity.



My new sheet metal brake which, despite all my excitement, was pretty lack luster when bending some flimsy ass metal... oh well.


Here i was measuring out how far i could extend the lower carrier before interfering with the tie rod end link during vertical travel of the suspension. Looked to be ~2"



So heres the basic design of the upper and lower carrier put together.




So i lovingly use the phrase "janky as ****" when referring to this piece of the project, but i really couldnt think of a better way to secure the hoses to the front of the car. I had a 2.5" holesaw and drilled though the inner and outer plate, put on plate on each side of the bumper, and threaded the hose through before riveting the plates together to sandwich it all in place. This design is what i based my idea on Vorshlag 3" Brake Inlet Cooling Kit for 2013-14 Mustang GT/Boss302 - Vorshlag LLC



Final beefy carrier 2.0 installed.


Hose zip tied to the sway bar. Its very important to check that your wheels dont rub the ducts. Ours rubs on the drivers side a bit on a full-lock right hand turn, which luckily this next track has none of, so i decided it was good enough. 95% of the time you arent even turning further than just platning your hands at 9 and 3 will allow any ways, but its always nice to make sure you have PLENTY of room.



Final versions plastidipped black for a more ... "clean" look lol. I guess as clean as it can be.


So thats that. It was a fun little project, which all in all i am very proud of. I dont recommend this as a substitute to some actual quality ducts, but hopefully this will just get us through this next track weekend.
 
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