ArmenMAxx

iTrader: (21)

Ive been doing some research and found some nice subtle brake ducts like the Crooked Willow CF duct and N-tech. Problem is they dont make them anymore. I personlly I like the CW one because its more of a street/semi track setup which is what im looking for.

Has anyone tried making a custom back panel that is similar to the CW? I was thinking of removing the stock (aluminum?) backing plate and cuting a hole then welding on an oval curved tubing that will work as a small duct. I could later on attach some tubing and make it a completly routed duct but thats later on.

Im currently using stock brakes with slotted rotors from Zeckhausen, Axxis ultimate pads front and rear (which I am assuming should be o.k for track with street tires), & SS lines. Basically im trying to get the most out of the stock brakes and now all thats left is cooling.

What you guys think?

turbogarrett

iTrader: (1)

Sounds like a good idea. I have the ntech backing plates and it is a pita trying to rig up the hoses so they don't rub while turning. Was thinking of doing something similiar.

Don't try axxis ultimates on the track, when they go away, they completely go away!! Ebc red's will work for a dual purpose pad, if you're running street tires.

gracer7-rx7

iTrader: (16)

search on posts from damian. he made a custom set for his race FD.

also search on some posts by John Magnuson.

ArmenMAxx

iTrader: (21)

damian contructed his backing panel from scratch. Since im using my stock brakes, Im wondering if anyone has modified the stock one.. Or if its possible.

Josh18_2k

iTrader: (3)

im suprised no one sells there, considering the amount of other race parts out there

John Magnuson

They should not be too hard to make yourself or any competent fabrication shop could make them for you.

Here is the link to my duct solution:

https://www.rx7club.com/3rd-generation-specific-1993-2002-16/pictures-my-custom-brake-duct-inlets-397125/

Been on the car for about 4 years now and have worked great and hold up to combined track, track and tarmac rally abuse.

Agent_D

iTrader: (2)

Looks very good, I plan on a similar setup for my FC with ducting to hit the center and push air through the vents.

ArmenMAxx

iTrader: (21)

Does anyone know where I can buy Aluminum sheets to fab up the backing panel? Also what thickness you guys recommend?

MaczPayne

iTrader: (5)

I'm sure there are metal suppliers around your area. Where are you located?

YaNi

iTrader: (2)

If you can TIG weld aluminum, you should be able to modify the stock shields by cutting a hole and welding a nipple onto the OEM shield.
If you can't, MazdaSpeed Motorsports sells the backing plates for <$80.

rx7will

iTrader: (6)

the only thing holding me back from adding brake ducts to my 99 brakes is the rubbing hose issue. I was working on a few porsches at work and i noticed that they dont have any sort of brake ducts at all. They use a deflector on the lower control arm that kind of directs air into the brakes. This wont work for an all out track monster, but for a beginner its worth trying.

I am going to try it before my next track day. I tried the ultimate pads on my fc at button willow and it started fading after a few laps.

ArmenMAxx

iTrader: (21)

I live in Glendale/La crescenta. I dont know of any places that sell actuall aluminal sheet metal. I have a friend who has the CW brake ducts and basically im planning on just tracing them on cardboard then have them fabbed in aluminum.
If anyone knows where I can get aluminum let me know.

Thanks

wickedrx7

iTrader: (14)

Aluminum can be found at http://www.mcmaster.com/. You will pay a decent $ for it through them but it is much easier than trying to find a local source. You pay for convince . Most local sheet metal suppliers won't want to deal with selling you small piece like you need. I am planning on making my own soon and was going to use 6061, .125 thick material for the backing plate. Please take lots of pics of your progress so i can copy it...

Mahjik

iTrader: (1)

Find a local metal shop and purchase their scraps. There is a place local to me called Metal By The Foot. I picked up some fairly large scraps one time from them for about $20. See if you have something similar in your area.

TrentO

You don't have to weld it up. I took the stock backing plate and ported the opening as large as I could. I then built a 3" tube from thin sheet and riveted it together. Some light hammering later and some cutting and I had the 3" pushed through the hole in the backing plate and then I cut and folded the edges. Some more rivets and the job was done. I use bungee cords to keep my duct tubes from rubbing and I use the stock car 3" brake duct hose because everthing else just melts off or tears away too easy. Same kind of deal in the front bumper with making a duct from my front bumper fog lamp holes to a 3" tube. start with cardboard, work out the shape, cut the metal, hammer it to fit and rivet in place.

-Trent

billyboy

Thought this was a particularly good set-up(bottom of page)

https://www.rx7club.com/suspension-wheels-tires-brakes-20/fd-brake-ducting-ti-backing-plates-questions-649493/

expect the small eye of standard brakes and associated clutter of upright/steering arm may present a few obstacles. As to alloy supplies, Aircraft Spruce seems to be cheaper than McMaster...and you'll need tube in any case as well, expect you'd probably be given an offcut if you went on the bum at the local airport though - Burbank??

Believe the standard backing plates were painted steel, then aluminised steel later....I'd suggest DC only for welding, if any attempt to mod them is contemplated!

PandazRx-7

iTrader: (18)

There's also this place I've been to years ago we can try. http://imsmetals.com/







.

MaczPayne

iTrader: (5)

Good info here! Not as "pretty" as tig welding a tube to the plate, but will work nonetheless.

BFGRX7

iTrader: (2)

Industrial Metal Supply Co - www.imsmetals.com - (323) 849-3184. They're located in sun valley right off of the 5 freeway. They've got everything you need including scrap aluminum that's relatively cheap. I use them for most of my projects.

~M