Best brake ducting options?

[scotty_miller]

Hard Motorsport just released a kit for you e9x guys. Looks like a solid kit

[macdude357]

Originally Posted by roastbeef

i don't think those inlet ducts will fit anywhere on the m3.

I think they'd fit our front bumper (since the page says it requires the M3 OEM bumper) but then you'd wouldn't get any air to the DCT cooler. Do Manual Trans cars need that duct for cooling as well? If not, it might work for them.

[roastbeef]

Originally Posted by macdude357

I think they'd fit our front bumper (since the page says it requires the M3 OEM bumper) but then you'd wouldn't get any air to the DCT cooler. Do Manual Trans cars need that duct for cooling as well? If not, it might work for them.

i think the 6mt and dct's have the same cooler. i wouldn't screw with the vents on these cars by trying to piggyback these ducts. just eyeballing them, they look to tall to mount inside of the under car felt fangs we have (some people have turned these into brake duct inlets). i'm pretty sure those ducts are for a 335.

[Richbot]

I think they piggyback off the side inlets and replace the existing ducts. So yeah you're going to lose the air to the intake and trans cooler. Probably not a big deal on 6mt cars half the OEM cooler is blocked from the factory. But a DCT would probably limp pretty quick with no air to thecooler

[M3 Number 86]

Wonder if we can piece together these components from these guys and make a cheap kit? Or is it cheaper elsewhere?

[roastbeef]

In case anyone was looking at the hard Motorsport ducts...

[dozaiya]

Originally Posted by roastbeef

In case anyone was looking at the hard Motorsport ducts...

tried the code but doesn't work for this kit
any fine prints?

[roastbeef]

Originally Posted by dozaiya

tried the code but doesn't work for this kit
any fine prints?

No idea. Just a screen shot from my email.

edit- not working for me either. there was a picture list of items with the email, but no fine print. i bet those are the only items that qualify.

[Mvez]

Although I have a set of Hard Motorsports new backing plates, which fit perfectly fine, I like the heat shielding of the stock backing plates.

So, I did the DIY setup using 2" flanges instead of 2.5"-3" because they still rub too much for a car that sees a lot of street driving. I am also going to weld a set of flanges to the Hard motorsport backing plates if I ever decide to use them, so I can use 2" tubing for either setup. With the 2" tubing, it still flows plenty of air, and we are able to slightly flatten them to gain full range of motion without any tire rub. 2" tubing is a 200% improvement in airflow over 0" tubing. Anybody that says 2" hose is not worth doing simply has no clue what they are talking about.

For the rear, I took a set of 997 Turbo rear plastic ducts, and cut them to fit the rear control arm which sends air directly onto the rear caliper and in the rotor area. Actually works nicely. Definitely an improvement over zero air flow. You can trim back the rear backing plate if you like, but I chose to keep it full due to the various control arm links so close. I learned this trick from my Cayman, lots of guys in Porsche world use these on the rear of 986 and 987 race cars. Works like a champ!

https://www.ecstuning.com/b-genuine-...99733148702kt/

The car can use cooling on both ends. It extends the life of virtually every braking component. No reason not to do these cheap mods.

[Richbot]

Agreed. Wel done. Also technically 2" hose flows infinitely more air than a 0" hose so 2" hose is infinitely better than no hose

[SYT_Shadow]

Mvez, can you post a few pics of how the rear part is installed? I'm interested

Thanks

[Mvez]

Originally Posted by SYT_Shadow

Mvez, can you post a few pics of how the rear part is installed? I'm interested

Thanks

No probl. I'll try to snap some pics this week.

[roastbeef]

has anyone mounted the hard motorsport brake duct kit yet? might be picking it up soon....

[Redd]

Originally Posted by Mvez

For the rear, I took a set of 997 Turbo rear plastic ducts, and cut them to fit the rear control arm which sends air directly onto the rear caliper and in the rotor area.

I'm very keen to see details and pics on how to do this please!

I did something similar for the front using 997 GT3 brake ducts. Details below.

http://www.m3post.com/forums/showthread.php?t=1406400

[dparm]

Originally Posted by dbyrd

Where do you get the paint or stickers? I'll do this when I go back to TWS in a few weeks.

Just Google around. Heck, sometimes Amazon has them:

https://www.amazon.com/dp/B005GWRVN6...=2VKLVL1OJNHBA

https://www.amazon.com/Genesis-Brake...61HHYKQW0FD1EW

[Exclusivs]

Bimmerworld?

http://www.bimmerworld.com/Brakes/Pe...ake-Ducts.html

[magus4286]

Originally Posted by roastbeef

has anyone mounted the hard motorsport brake duct kit yet? might be picking it up soon....

Just stumbled on this post... I have mounted it.

Quick take on the ducts: if your suspension and wheels/tires aren't close to stock, be hesitant. This, of course is kind of ridiculous for something that's targeted at track cars where these things will not be stock.

I went through TWO sets of the ducts, both of which broke.

First set I believe just broke from turning the wheel too much (18x10 ET20 with 275s), so I added their steering limiters to help prevent that....

I believe the second set just broke when I dropped the car on the jack b/c the "mouth" on the plastic duct where the hose attaches sits right above the bend in the sway bar (stock on my car). Springs compress rapidly and things shift, sway bar smacks into duct and it cracks because they used very brittle plastic.

If you've got stock width wheels and the car isn't lowered you may be just fine, but my criticism is that that's not the target market for the product in the first place.

Note: if you look on their product site now the installed photo there is actually my car right after I installed the first set, shortly before it broke. (I offered them install photos in exchange for getting that second set of ducts).

Also a word on the backing plates themselves. They would be great for stock rotors, I expect. On my ST60 BBK with 380x35mm rotors, it touches the rotor face without modification, which is easy enough with a Dremel.

[roastbeef]

I had a gut feeling they were garbage, thanks for the confirmation.

[Visceral]

Originally Posted by magus4286

Just stumbled on this post... I have mounted it.

Quick take on the ducts: if your suspension and wheels/tires aren't close to stock, be hesitant. This, of course is kind of ridiculous for something that's targeted at track cars where these things will not be stock.

I went through TWO sets of the ducts, both of which broke.

First set I believe just broke from turning the wheel too much (18x10 ET20 with 275s), so I added their steering limiters to help prevent that....

I believe the second set just broke when I dropped the car on the jack b/c the "mouth" on the plastic duct where the hose attaches sits right above the bend in the sway bar (stock on my car). Springs compress rapidly and things shift, sway bar smacks into duct and it cracks because they used very brittle plastic.

If you've got stock width wheels and the car isn't lowered you may be just fine, but my criticism is that that's not the target market for the product in the first place.

Note: if you look on their product site now the installed photo there is actually my car right after I installed the first set, shortly before it broke. (I offered them install photos in exchange for getting that second set of ducts).

Also a word on the backing plates themselves. They would be great for stock rotors, I expect. On my ST60 BBK with 380x35mm rotors, it touches the rotor face without modification, which is easy enough with a Dremel.

I've installed mine (and the steering limiters) over the last few weekends when I have time. They are certainly quirky and require SIGNIFICANTLY more time and customization than the adverts indicate to the wheel well, undercarraige, etc. They are very much "racecar". There's a section of metal that was really in the way and clearly needed clearancing. The screws that held the ductwork to the stock ducts immedaitely pulled their plastic threads out and would have been incredibly hard to tighten. A different set of self tapping 3/8" head #8 screws had to be sourced from a local hardware store.

Part of the disc-backing plate blocked the two duct holes to about 50%. I may take them off and dremel out the whole hole. I can't figure out how this is the best way to direct maximum airflow.

Is it worth doing? Probably.
Will it last? Probably not in this exact form... some of the parts will, some wont.
Was it worth it? $500? I don't think so.

The logic is that cooling will pay for itself in lower consumable $ spent... so if I was to apply that $500 to the BBK, it would install a ton easier, but might not be the right choice in the long term.

¯\_(ツ)_/¯

edit: I use 19x10 square wheels on the street and track

[magus4286]

Originally Posted by Visceral

.

Part of the disc-backing plate blocked the two duct holes to about 50%. I may take them off and dremel out the whole hole. I can't figure out how this is the best way to direct maximum airflow.

The idea there is that you want all of the airflow going to the center of the rotor hat so it's pulled through the rotor vanes, rather than at the rotor face directly, which cools unevenly.

[kyippee]

Is there any good reliable brake duct options for 18x10 275 square NT01 fitment? I keep reading bad reviews, nothing solid so far. Not getting fade, but my front pads seem to be getting cooked. Running PMU 999 with 380mm/6 piston BBK up front

[roastbeef]

all of the good solutions seem to be custom. there are a few running 911 lca scoops with good results.