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View Full Version : Mustang brake ducts - Who needs?



j3ffbrooks
06-26-2006, 05:48 PM
Trying to find out if anyone needs brake ducts for their car. These are the duct brackets that mount to the SN95 spindle. I can get some pictures tomorrow, but these direct the air primarily into the rotor hat and some onto the rotor surface. I think there was a thread on CC.com about someone making these but couldn't find it(meaning lazy).

If I can get enough peope to buy these they will be $75/pair + shipping(if any). Maybe cheaper.

J.Brooks

gt40
06-26-2006, 05:55 PM
Trying to find out if anyone needs brake ducts for their car. These are the duct brackets that mount to the SN95 spindle. I can get some pictures tomorrow, but these direct the air primarily into the rotor hat and some onto the rotor surface. I think there was a thread on CC.com about someone making these but couldn't find it(meaning lazy).

If I can get enough peope to buy these they will be $75/pair + shipping(if any). Maybe cheaper.

J.BrooksCan you get a photo? I was thinking of maiking a set very similar to the Griggs design (which is VERY simple.) Marshall Mosty runs this, I think.

However, if your setup looks good, I may just get them.

AI#97
06-26-2006, 06:04 PM
Post picture.....I am interested.

CMC17
06-26-2006, 09:30 PM
I'm interested.

Adam Ginsberg
06-26-2006, 09:50 PM
Count me in as well.....please post pics.

Thanks, Jeff.

marshall_mosty
06-26-2006, 10:28 PM
Okay guys.

The list of materials is as follows:
6" long, 3" exhaust pipe (Qty 2)
1" wide, 0.125" steel strip stock, cut to 1.5" (Qty 4)

You will smash one end of the 3" tubing down so your caliper will mount in the bracket.

The two tabs are custom cut :) with a cutoff wheel to notch for the caliper mount to spindle bolts to grab them. Use large washers to help the precision fit.

I think I have approx $11 in material for each pair and about 2 hours of labor. $75 would be fair for a "good" looking pair. Mine don't classify as "good looking", but they are functional.

$11 versus $150 (Griggs).... easy answer in my book.

I'm working on getting pictures... more to come!

http://www.mustangmods.com/ims/u/1280/5370/70617.jpg
http://www.mustangmods.com/ims/u/1280/5370/70618.jpg
http://www.mustangmods.com/ims/u/1280/5370/70619.jpg
http://www.mustangmods.com/ims/u/1280/5370/70620.jpg

CMC17
06-27-2006, 08:18 AM
Several things scare me>

Words: smash, custom and cutoff wheel :shock:

I would be the one to smash the wrong thing. lol

AI#97
06-27-2006, 08:49 AM
Several things scare me>

Words: smash, custom and cutoff wheel :shock:

I would be the one to smash the wrong thing. lol

Yeah, this started me to think about how it would clear brakes other than the cobra setup....brembo, stoptech etc..... need pictures from Jeff's setup to make final decision.

donovan
06-27-2006, 03:28 PM
I have talked with Jeff about these... He has StopTechs, I have Brembos and a set of PBR(cobra)...

I will make sure we test fit for all the different setups...

jeffburch
06-27-2006, 03:42 PM
Chevy Guys grow their own.
http://www.frrax.com/rrforum/index.php?s=a17a3503a918d9d3b45fde7fc1d95b9c&showtopic=7541

jb

j3ffbrooks
06-27-2006, 04:24 PM
Chevy Guys grow their own.
http://www.frrax.com/rrforum/index.php?s=a17a3503a918d9d3b45fde7fc1d95b9c&showtopic=7541

jb

that's great. Are you bragging or something?

These are similar to Burch's ducts. These were made by Chad at CSD. I was thinking of having the airflow go only to the rotor hat. The 3" tubing would have to be oval shaped.

BTW - these will work all brake setups. I had them on with the StopTechs and PBR Cobras. They attach to the factory dust shield mounts.

AI#97
06-27-2006, 05:21 PM
Chevy Guys grow their own.
http://www.frrax.com/rrforum/index.php?s=a17a3503a918d9d3b45fde7fc1d95b9c&showtopic=7541

jb

Picture didn't come up here at work but I will assume you are talking about your own fungus and we Ford guys already knew that! :wink:

oz98cobra
06-28-2006, 05:44 PM
I might be able to help some of you guys here - I am now making brake ducts - I have just finished prototyping a version for the 05 GT, and they are now off to production, and now I am fine tuning a version for the 94-04 Cobra (which of course will also work for CMC Mustangs).

They are made from 5054 aluminum, direct ALL the air into the center of the rotor hat, seal as much of the open space as possible so that max air goes through the rotor, and mount to the dust shield bolt holes. Your choice of finishes - unfinsihed or high temp coated? They are somewhat similar to the ones Kenny Brown used to sell, but have a more sensible tube location, are made from slightly thicker/stronger aluminum, and use all 3 mount points, not just 2.

I'll have to work out a price for you guys - it will be somewhere south of $100 a pair for sure - and I can have them ready about 2 weeks prior to TWS.

I'll post a pic of the 94-04 version as soon as I can get one - in the meantime, attached are a couple pics of the similar 05 prototype setup.

Let me know if interested?

AI#97
06-28-2006, 08:21 PM
Let me know if interested?

Yes!

marshall_mosty
06-28-2006, 10:00 PM
Daron,
I'll ditch the "cheap ass" ducts for a pair like that. Count me in for a pair that fits the SN95 spindles with PBR calipers.

michaelmosty
06-29-2006, 09:22 AM
Count me in as well. 8)

Rob Liebbe
06-29-2006, 01:09 PM
Me too, me too!!!

Does the tube run to the front of the strut or behind it? Marshall's setup lookes like it mounts on the trailing side with the hose running through the space formerly occupied by the stock spring. OK for coilovers, but not CMC style.

oz98cobra
06-29-2006, 01:21 PM
The hose is in front of the strut, it will work fine on a CMC setup. They will also be fine on a coil-over AI setup that uses the stock spindles. I'll test them on both setups to be sure before we release them.

The spacers will also be shimmable to allow for variations in rotor location - I know some of the CMC setups shim the caliper brackets, so this will allow fine tuning of the clearnance between rotor and duct.

Rob Liebbe
06-29-2006, 01:26 PM
I figured your would have thought that out and I also looked at your pictures a little closer.

BTW - You need to change your signature to read "CMC#5 - The faster of two drivers" What do you think?

michaelmosty
06-29-2006, 01:55 PM
BTW - You need to change your signature to read "CMC#5 - The faster of two drivers" What do you think?

:shock: Wow..........grabs popcorn. :wink:

oz98cobra
06-29-2006, 02:24 PM
... BTW - You need to change your signature to read "CMC#5 - The faster of two drivers" What do you think?

I'm thinking Adam's gonna whoop your butt when he's in the car at TWS! ;)

Rob Liebbe
06-29-2006, 02:37 PM
He was talkin' trash at Cresson and didn't back it up then. Plus I got me some of that there cheatin' bastich practiz last week at TWS - YEEEEHAAAA!!!

Bring it on - we'll have a good ol' time.

Rob Liebbe
06-29-2006, 02:37 PM
He was talkin' trash at Cresson and didn't back it up then. Plus I got me some of that there cheatin' bastich practiz last week at TWS - YEEEEHAAAA!!!

Bring it on - we'll have a good ol' time.

chris-CMC#35
06-30-2006, 09:24 AM
Daron,

As long as they fit an SN95 with PBR, I'm in for a pair.

thanks,
chris

Adam Ginsberg
06-30-2006, 10:57 AM
Rob's memory must be failing...he repeats himself on message boards.

:D

David Love AI27
06-30-2006, 11:04 AM
He was talkin' trash at Cresson and didn't back it up then. Plus I got me some of that there cheatin' bastich practiz last week at TWS - YEEEEHAAAA!!!

Bring it on - we'll have a good ol' time.

OK Rob, time for a reality check.... passing a stock Neon is not much practice even if you did complete the pass in the corner... oh and by the way you will NEVER catch "The Beast", so save those stickers for someone else...

jeffburch
06-30-2006, 02:00 PM
Daron, what size in the aluminium tubing? What guage thickness?
Where did you get and how much was it? I need about 2 feet of it if its 3 inch OD.
Thanks for bragging/sharing here.

jb

Tex89
06-30-2006, 02:39 PM
I have a piece at home. Don't know the length, will check tonight.

oz98cobra
06-30-2006, 03:45 PM
Daron, what size in the aluminium tubing? What guage thickness?
Where did you get and how much was it? I need about 2 feet of it if its 3 inch OD.
Thanks for bragging/sharing here.

jb

You want me to give away my trade secrets? Besides, this is Mustang Aluminum- won't work on Chebbys ;)


The stuff I use most is 3" OD x 0.83 - I get it through my business partner, but I think it retails for about $10 a foot? Closest place for you to source it is probably one of the Metal Supermarkets? Google them for a store location near you.

Tex89
06-30-2006, 07:55 PM
I have a piece 22.5 inches long, so according to Darron, @10/ft = $18.75 for the one I have.

Call me @ 214-827-4967 or 214-232-1899

David

Boudy
07-04-2006, 11:11 PM
I'll take a pair.

Boudy

oz98cobra
07-05-2006, 01:03 PM
I'm on it - I'll have at least 6 sets ready - target date is July 21st for uncoated aluminum at $90 per set (I'm assuming that uncoated is preferable for racing purposes?)

marshall_mosty
07-05-2006, 08:45 PM
Daron,
Uncoated is fine for me. Just let me know how to arrange payment.

Boudy
07-05-2006, 10:17 PM
Daron,
Uncoated is fine for me. Just let me know how to arrange payment.

Ditto!!!

Boudy

Tex89
07-07-2006, 12:40 PM
Is there a local racer who can take this chunk of pipe to TWS for Jeff Burch?

oz98cobra
07-18-2006, 03:43 PM
An update on the brake ducts. We are almost on schedule - the design is finalized, but testing of the pre-production prototype sets on different cars showed some final minor adjustment was called for (the location of the hose inlet is critical on this model to ensure it will not interfere with the lower strut mounting bolt with different brands of strut installed). I should have the first production model tomorrow for a final test fit and quality inspection, and can then give the go ahead for the first batch to be produced. If I don't have them by the weekend, it will be early next week - still in plenty of time before the next race at TWS.

Here is who I have on the want list:

Matt W.
Marshall M.
Michael M.
Rob L.
Chris Mc.
Boudy
David D.

Anyone else?

donovan
07-18-2006, 04:39 PM
David D.

AI#97
07-18-2006, 06:18 PM
An update on the brake ducts. We are almost on schedule - the design is finalized, but testing of the pre-production prototype sets on different cars showed some final minor adjustment was called for (the location of the hose inlet is critical on this model to ensure it will not interfere with the lower strut mounting bolt with different brands of strut installed). I should have the first production model tomorrow for a final test fit and quality inspection, and can then give the go ahead for the first batch to be produced. If I don't have them by the weekend, it will be early next week - still in plenty of time before the next race at TWS.

Here is who I have on the want list:

Matt W.
Marshall M.
Michael M.
Rob L.
Chris Mc.
Boudy

Anyone else?

What size is the inlet again? I am going to be at PST on Friday and need to get some flexible hose....the aluminum drier duct won't cut it!!! :wink:

oz98cobra
07-18-2006, 06:26 PM
What size is the inlet again? I am going to be at PST on Friday and need to get some flexible hose....the aluminum drier duct won't cut it!!! :wink:

3" - and if PST haven't replenished their stock yet, I have some here.

Tex89
07-20-2006, 11:42 PM
Jeff,

I still have the pipe. no one called to take it to TWS this weekend, sorry.

oz98cobra
07-24-2006, 02:53 PM
Well, the "production" version of the ducts was rejected - they were plasma cut, which is fast and inexpensive to get done, but the appearance is less acceptable than I was led to believe, so they will now be water jet cut.

I still hope to get enough done for everyone here late this week but it is more likely now going to be early next week, so still in time for TWS - and the price won't change . If anyone cannot wait that long, let me know and we'll work out an alternative.

marshall_mosty
07-24-2006, 03:52 PM
Daron,
If you get in a crunch, I don't need mine for TWS. As long as I have them by early September or so.

Rob Liebbe
07-24-2006, 03:53 PM
I also don't need them by TWS as I now have to work this weekend and won't be able to install anyway. :x

AI#97
07-24-2006, 05:09 PM
I also don't need them by TWS as I now have to work this weekend and won't be able to install anyway. :x

What? You can't work on the car at the track?!! :P

Rob Liebbe
07-25-2006, 07:39 AM
I prefer not to, especially in August!!!! Call me a wimp if you want, I don't care.

oz98cobra
07-31-2006, 11:11 AM
The componants came in late Friday and are being assembled/welded as I write this. I'll be in touch with everyone tonight/tomorrow to arrange delivery and payment details.

michaelmosty
07-31-2006, 12:23 PM
Thanks for all your help with this Daron!!!

oz98cobra
08-01-2006, 09:49 PM
The ducts will be available for pickup by DFW guys tomorrow afternoon. Call me on 469-939-6975 to arrange delivery.

oz98cobra
08-03-2006, 06:24 PM
Rob and David, your ducts are now with Matt to take down to TWS.

I finally got around to snapping a pic of these ...

marshall_mosty
08-03-2006, 10:38 PM
Very nice Daron. Much cleaner than my home brew ducts.

marshall_mosty
12-26-2006, 09:36 PM
Daron,
You may want to jump on cc.com to check out interest in brake ducting.

http://www.corner-carvers.com/forums/showthread.php?t=32501

I'm going to host your "finished product" picture over there... I hope it's okay.

oz98cobra
12-27-2006, 06:25 AM
Go for it Marshall - I'll check it out next week when I'm back in town.

Wade
12-13-2009, 11:00 PM
I'm bringing this thread back from the dead. I just found it after posted for these in the Want to Buy section. Is Daron still on this board? I'd like to get a set of these.

Crumpacker
12-15-2009, 02:17 PM
I'm bringing this thread back from the dead. I just found it after posted for these in the Want to Buy section. Is Daron still on this board? I'd like to get a set of these.

+1

michaelmosty
12-15-2009, 04:03 PM
Sam, that avitar is great!! :lol:

Rob Liebbe
12-15-2009, 04:22 PM
I agree, Sam's avatar is great!!!!

Wade
12-15-2009, 08:55 PM
I emailed Daron and he responded that the demand was too small for him to make tooling for the '94-95 spindles, and that his product was only available for the '96+ spindles. This seems odd since I was under the impression that all foxes ran the '95's, but it is what it is. Mosty, Liebbe, Donovan, what are you guys doing for this?

j3ffbrooks
12-15-2009, 10:06 PM
I believe the 96+ spindles are more desirable in fox cars for purposes related to bumpsteer.

Wade
12-15-2009, 10:51 PM
Ok, I'll bite and admit that I am more of a noob than I care for y'all to know. What else do I have to change to convert my CMC fox to '96+ spindles. I was basing my previous thoughts on this from Maximum Motorsports website:

"•Do not install a 1996-04 spindle on a 1979-93 Mustang fitted with a stock-geometry k-member! Doing so will significantly increase bumpsteer because...
◦The steering arm on the 1996-04 spindle is about 1.02" (26mm) lower (relative to the rest of the spindle) than the steering arm of any 1979-95 spindle.
◦The lower steering arm forces the outer tie-rod end to a lower position.
◦That new position is far too low for the steering rack location of any 1979-93 Mustang, and radically changes the steering geometry.
◦It is impossible to correct the geometry with a bumpsteer kit because the outer tie-rod end needs to be raised so much that it would have to occupy the same physical space as the steering arm."

donovan
12-16-2009, 12:07 AM
Ok, I'll bite and admit that I am more of a noob than I care for y'all to know. What else do I have to change to convert my CMC fox to '96+ spindles. I was basing my previous thoughts on this from Maximum Motorsports website:

"•Do not install a 1996-04 spindle on a 1979-93 Mustang fitted with a stock-geometry k-member! Doing so will significantly increase bumpsteer because...
◦The steering arm on the 1996-04 spindle is about 1.02" (26mm) lower (relative to the rest of the spindle) than the steering arm of any 1979-95 spindle.
◦The lower steering arm forces the outer tie-rod end to a lower position.
◦That new position is far too low for the steering rack location of any 1979-93 Mustang, and radically changes the steering geometry.
◦It is impossible to correct the geometry with a bumpsteer kit because the outer tie-rod end needs to be raised so much that it would have to occupy the same physical space as the steering arm."

I believe that information is true and accurate for a street car, but with the lower ride height of the CMC cars the 96+ spindles are what gets the best geometry with bump steer... if I remember correctly, and they are slightly wider for track width too.

Are you sure you have the 94-95 arms? You might want to check... If the steering arm is bent its the 94-95, if the arm is straight its the 96+.

If you wanted to change, its just a spindle swap, no other parts are needed.

If you are not having any issues with brakes yet, I would be inclined to just keep it the way it is for a few events. Maybe wait till you find a great deal on the 96+'s if you do need them.

Also, see if you can get your hands on a bump steer gauge and check the car either way!

DD

AI#97
12-16-2009, 11:46 AM
I have a spare set of 96+ spindles off my car. $100 will need hubs and nuts along with bolt through bump steer kit.

edited for additional info.

Rob Liebbe
12-16-2009, 01:41 PM
I'm running the 94-95 spindles, 94 a-arms, Max Motorsports tapered bumpsteer kit, and a modified DownUnder brake duct kit. I had to do some modifications to the backing plates to make them fit the 94 spindle, but it was minor having to do with the mounting tabs. I also reduced the diameter of the inlet tube by slicing, trimming, and re-welding the inlet tube to make it easier to slip the hose on. The inlet tube has exactly the same o.d. as the i.d. of the typical tubing, including the tubing I got from Daron. I used a/c ductwork/flues from home depot for the inlet side and fitted them into the fog light holes.

Good luck.

Wade
12-16-2009, 02:08 PM
Thanks for the info everyone. I'm pretty sure I have a set of '96 spindles laying around, but I'm not ready to try that route yet. I think I'll just take two of my old spare dust shields and use those as templates, along with Daron's photo to make some brackets of my own, or maybe buy his and modify like Rob did. I'll let you know how that turn out.

BlueFirePony
12-16-2009, 05:11 PM
Thanks for the info everyone. I'm pretty sure I have a set of '96 spindles laying around, but I'm not ready to try that route yet. I think I'll just take two of my old spare dust shields and use those as templates, along with Daron's photo to make some brackets of my own, or maybe buy his and modify like Rob did. I'll let you know how that turn out.

That's a good route to go for now Wade..the templated dust shields..what I am planning too...I completely tore up my front fascia and all my cool fangled brake ducting getting in some Cheatin' Bastard practice at ECR before my first race with AI/CMC (yes, I practiced the "hard-off" but I also had a 2:03 that day on used up tires - and only ran like 5 laps :) )...since then I've either run w/o ducting or just zip tied it in. Now that I have two whole days planned to work on the car, I plan to delegate a welding job to my brother-in-law and get that repaired.

AI#97
12-16-2009, 06:08 PM
The backing plates really aren't rigid enough to deal with the hose pulling and pushing on them. Tried it a long time ago and had to abandon it once the plate gave up the ghost and fell apart.

Agent 47 also sells a kit that work on foxes and S197's....? try their site.

BlueFirePony
12-16-2009, 06:27 PM
The backing plates really aren't rigid enough to deal with the hose pulling and pushing on them. Tried it a long time ago and had to abandon it once the plate gave up the ghost and fell apart.

Agent 47 also sells a kit that work on foxes and S197's....? try their site.

Not sure about Wade but I was just using the dust shield as a template to cut out a more sturdy, yet lightweight, plate. I've bought enough crap for this car that I could have fab'd myself...while I am not going to go crazy and fab engine stuff, I can handle the occasional chassis and aero component.

Wade
12-17-2009, 07:05 PM
Same for me. I plan to use the old dust shields as an easier way to make heavier versions that will support the ducting. I'm trying to save $$ since Saferacer took all of mine. On another note, new safety gear arriving soon!