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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Thu, Dec-27-2018, 05:01:51 PM   #11
mcfreid
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Default Re: 3D printed brake duct project update.

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I have never overheated my brakes on track (brembo GT BBK with dedicated track pads).

That said, cooler brakes have a longer service life-- That's 100% my goal here.

I don't think there's a ton more drag. There are brake ducts, stock-- they just duct into the wheel well. This is a ~30% larger intake duct (larger by the size of the fog light) than stock, but the real benefit is where I'm putting the air (into rotor, instead of just into the wheel well)-- and without a wind tunnel, I don't know if that increases or decreases drag (or is indifferent).

I was considering, for a while, making half of the duct go to an air curtain type thing in the fender liner, as BMW does in their new cars. But, without a wind tunnel to develop it, I don't think I could definitively make that functional.

But, yeah-- my goal here is to bring the price of consumables down.
Right, makes sense. Compared to the standard bumper, the drag difference is probably negligible. I had thought you were running a csl bumper, in which case the difference may be more measurable.
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Old Thu, Dec-27-2018, 05:09:46 PM   #12
Drewster
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Default Re: 3D printed brake duct project update.

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MakerBot Z18.

How are you planning to make it out of ABS?
Oooh, high roller

My Chinese printer is technically capable of printing ABS, but it really needs a temperature controlled enclosure to keep something like this from warping/ cracking - working on some MDF and Raspberry Pi magic to do so
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Old Thu, Dec-27-2018, 06:28:31 PM   #13
terraphantm
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Default Re: 3D printed brake duct project update.

Given that it doesn't interfere with the middle bracket, is there any reason you wouldn't just be able to mount the fog lights when with the ducts in place? That way you could leave the fog lights mounted for street duty and just pop them out out when heading to the track (where ugliness probably doesn't matter so much? Or you could even paint the middle bracket thing black to make it a little more hidden).
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Old Thu, Dec-27-2018, 06:34:46 PM   #14
Obioban
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Default Re: 3D printed brake duct project update.

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Given that it doesn't interfere with the middle bracket, is there any reason you wouldn't just be able to mount the fog lights when with the ducts in place? That way you could leave the fog lights mounted for street duty and just pop them out out when heading to the track (where ugliness probably doesn't matter so much? Or you could even paint the middle bracket thing black to make it a little more hidden).
Probably-- someone would have to check the clearance between the washer tank and fog light (If there's room to add a brake duct in there). I can't, as I don't have the stock washer tank anymore.
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Old Thu, Dec-27-2018, 07:17:00 PM   #15
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Default Re: 3D printed brake duct project update.

Interested to see if this is compatible with fog lights. Like you I'm terrified to cut or do anything to my bumper just yet
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Old Thu, Dec-27-2018, 07:21:55 PM   #16
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Default Re: 3D printed brake duct project update.

Very interested too. I don't care to keep the fog light (actually prefer to look of the contrary).

Also, will there be an option to add additional routing for the intake? Looks great so far!
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Old Thu, Dec-27-2018, 07:30:48 PM   #17
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Default Re: 3D printed brake duct project update.

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Very interested too. I don't care to keep the fog light (actually prefer to look of the contrary).

Also, will there be an option to add additional routing for the intake? Looks great so far!
I made a version with a duct that would work nicely for CSL airboxes. I haven't done a stock airbox version, and don't have the parts to do so.

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Old Thu, Dec-27-2018, 08:47:53 PM   #18
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Default Re: 3D printed brake duct project update.

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Very interested too. I don't care to keep the fog light (actually prefer to look of the contrary).

Also, will there be an option to add additional routing for the intake? Looks great so far!
I have the stock airbox and plan on making a dual outlet duct for the driver's side

I think I still have foglights hanging around.. will need to see how the harness would run
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Old Thu, Dec-27-2018, 08:49:56 PM   #19
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Default Re: 3D printed brake duct project update.

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Old Thu, Dec-27-2018, 09:09:19 PM   #20
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Default Re: 3D printed brake duct project update.

Looks great, nice work
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Discussing 3D printed brake duct project update. in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)