M3 GT4 Brake Ducts

[BRDHNTR]

I just saw this on Turner's website.
http://www.turnermotorsport.com/html...1748321767-768

I don't know if these are necissary for my skill level as I only had a slight fade issues at Summit Point on a 95 degree day with the stock brakes running Carbotech XP10's, but these seem like they could help.

$600 is pretty hefty for two small pieces of carbon. I'm surprised that no one has knocked them off yet.

[Green///Hell]

Wow brake ducts would help a lot on this car. I'm thinking I can make my own ducts for way cheaper tho, I never thought of putting them there tho
I'm now fast tracking what I've been wanting to do and use generic piping like everyone else

[lucid]

The placing of the duct is exactly what I was thinking about. However, you still need ducting. It might require some cutting and joining, but that's not a big deal. The real missing pieces are backing plates.

[BRDHNTR]

Lucid, they sell ducting as well for another $90 or so. You are right about the backing plates as I don't know how else you would mount the hose so that it is focused on the brakes. I wonder how the GT4 car is set up and why they don't offer that as a complete package.

[lucid]

Originally Posted by BRDHNTR

Lucid, they sell ducting as well for another $90 or so. You are right about the backing plates as I don't know how else you would mount the hose so that it is focused on the brakes. I wonder how the GT4 car is set up and why they don't offer that as a complete package.

I am sure the GT4 car has backing plates for more effective cooling. They might not fit the stock setup though. Also, it would also be hard to securely mount the ducting on the other end without the plates, and you don't want to shred and lose the ducting when you go over curbing and so on. It's just a matter of time before vendors come out with backing plates...

[skierman64]

Holy cow. That's a nice system but it's only the cowls for $600...wow. If it included the backing plates and hose, it might be worth $600.

Are those even carbon, the look like plastic. Plastic is for sure all that's needed, it's not a high stress part.

[swamp2]

Ugh, $600 what a massive rip off. Not Turners fault, since they are genuine BMW motorsport parts that is the reason for the price. This would be a great part to copy and offer at a much lower/more reasonable price.

[aus]

Originally Posted by skierman64

Holy cow. That's a nice system but it's only the cowls for $600...wow. If it included the backing plates and hose, it might be worth $600.

Are those even carbon, the look like plastic. Plastic is for sure all that's needed, it's not a high stress part.

That's what I was thinking.

[sparkyg]

Get BBK boys, ditch the stock setup like JAJ

$0.02

[skierman64]

Originally Posted by sparkyg

Get BBK boys, ditch the stock setup like JAJ

$0.02

No need for BBK, for the track all you need are some track pads and some additional cooling to the front rotors. Much more cost effective than a BBK with the same or near the same end result.

[KINGLEH]

Originally Posted by lucid

The placing of the duct is exactly what I was thinking about. However, you still need ducting. It might require some cutting and joining, but that's not a big deal. The real missing pieces are backing plates.

tru....


for that price i would expect the complete kit...



I always wondered if you could run a duct in that location... i would like the see the exact GT4 cars setup.... Then replicate it....


I have a bbk kit... but a ducting kit would be even better... you cant over do it with brakes.. the less they have to work the better.. for feel and life....

[Lemans_Blue_M]

Originally Posted by lucid

I am sure the GT4 car has backing plates for more effective cooling. They might not fit the stock setup though. Also, it would also be hard to securely mount the ducting on the other end without the plates, and you don't want to shred and lose the ducting when you go over curbing and so on. It's just a matter of time before vendors come out with backing plates...

Yes, the GT4 has special backing plates that are designed to flow air to the large front j-hook brake rotors. This improves the performance of the custom-built 15" AP Racing monoblok brakes (per BMW Motorsport specs), that are fitted to the front axle. From the pre-release drawings I saw, these backing plates were fabricated to match the specs of the AP Racing brakes. (to maximize fresh air flow to the center hub) I am unsure if this would work as effectively on our stock OE brakes.

If anyone cares, the BMW Motorsport OE part numbers for the ducting hose and OE clamp are:

3411 8282001 Ventilation hose 70 x 1000mm

0712 9952131 Hose clamp 77-84mm (2 required)

You guys have to understand, that most of the parts for these race care are made in extremely low quantities. They are designed and engineered for one purpose:

To improve the on-track performance.

The overall costs involved are prohibitive, unless you have deep pockets to fund such a venture. It's not a profitable exercise by any means. The racing program operates at a loss every year. (as with virtually every other racing program out there)

BMW does this in order to stay true to it's racing heritage, and improve the brand's marque value.

[DrKevM5]

Originally Posted by skierman64

No need for BBK, for the track all you need are some track pads and some additional cooling to the front rotors. Much more cost effective than a BBK with the same or near the same end result.

Absolute truth...

[aus]

Originally Posted by Lemans_Blue_M

Yes, the GT4 has special backing plates that are designed to flow air to the large front j-hook brake rotors. This improves the performance of the custom-built 15" AP Racing monoblok brakes (per BMW Motorsport specs), that are fitted to the front axle. From the pre-release drawings I saw, these backing plates were fabricated to match the specs of the AP Racing brakes. (to maximize fresh air flow to the center hub) I am unsure if this would work as effectively on our stock OE brakes.

If anyone cares, the BMW Motorsport OE part numbers for the ducting hose and OE clamp are:

3411 8282001 Ventilation hose 70 x 1000mm

0712 9952131 Hose clamp 77-84mm (2 required)

You guys have to understand, that most of the parts for these race care are made in extremely low quantities. They are designed and engineered for one purpose:

To improve the on-track performance.

The overall costs involved are prohibitive, unless you have deep pockets to fund such a venture. It's not a profitable exercise by any means. The racing program operates at a loss every year. (as with virtually every other racing program out there)

BMW does this in order to stay true to it's racing heritage, and improve the brand's marque value.

Thanks for the info.
Too bad they won't make these as a Performance part.
Why would they come out with these M SUV's???

[jml]

Originally Posted by DrKevM3

Absolute truth...

+1, The brakes on the M3 are excellent with race pads and fluid.

[Jonmartin]

Originally Posted by swamp2

Ugh, $600 what a massive rip off. Not Turners fault, since they are genuine BMW motorsport parts that is the reason for the price. This would be a great part to copy and offer at a much lower/more reasonable price.

It is turners fault trust me. Gintani is going to be making a kit for the OE brakes soon out of dry carbon.

[skierman64]

Originally Posted by Jonmartin

It is turners fault trust me. Gintani is going to be making a kit for the OE brakes soon out of dry carbon.

I'll take mine in black plastic please. With a part that small the weight penalty is nil. And I don't need carbon fiber in a place that most people won't see anyhow.

function > form

I'd rather save the cash, go with plastic, and buy more brake pads for track days.

[Radiation Joe]

Originally Posted by skierman64

I'll take mine in black plastic please. With a part that small the weight penalty is nil. And I don't need carbon fiber in a place that most people won't see anyhow.

function > form

I'd rather save the cash, go with plastic, and buy more brake pads for track days.

Don't confuse us with logic and intelligence. This is an M3 forum after all.

[Lemans_Blue_M]

Originally Posted by Radiation Joe

Don't confuse us with logic and intelligence. This is an M3 forum after all.

L O L

This man speaks the truth.

[jml]

Originally Posted by Jonmartin

It is turners fault trust me. Gintani is going to be making a kit for the OE brakes soon out of dry carbon.

WTF is the point of carbon - just make it out of plastic and make it easy to install without hacking up the car. Track rats couldn't care less about an invisible carbon fiber part.

[lucid]

CF for the air intake is irrelevant as plastic will do the job just as well without a significant weight difference. I suspect CF backing plates deal with heat better than plastic though, so they are probably more suitable as backing plate material (speculation--no data). Plus, a CF backing plate would be stiffer and stonger than a plastic one (unless the plastic plate is very thick) and that's important. You don't want to plate to deform plastically if you drop the wheel on it, or vibrate and contact the rotor, etc. A CF backing plate might save you ~0.5lb of unsprung weight over a metal one, and we can probably all agree that's not a big deal.

[lucid]

Originally Posted by Lemans_Blue_M

Yes, the GT4 has special backing plates that are designed to flow air to the large front j-hook brake rotors. This improves the performance of the custom-built 15" AP Racing monoblok brakes (per BMW Motorsport specs), that are fitted to the front axle. From the pre-release drawings I saw, these backing plates were fabricated to match the specs of the AP Racing brakes. (to maximize fresh air flow to the center hub) I am unsure if this would work as effectively on our stock OE brakes.

If anyone cares, the BMW Motorsport OE part numbers for the ducting hose and OE clamp are:

3411 8282001 Ventilation hose 70 x 1000mm

0712 9952131 Hose clamp 77-84mm (2 required)

You guys have to understand, that most of the parts for these race care are made in extremely low quantities. They are designed and engineered for one purpose:

To improve the on-track performance.

The overall costs involved are prohibitive, unless you have deep pockets to fund such a venture. It's not a profitable exercise by any means. The racing program operates at a loss every year. (as with virtually every other racing program out there)

BMW does this in order to stay true to it's racing heritage, and improve the brand's marque value.

Thanks for the info on the Motorsport parts. Not sure how the rest of your post has anything to do with my post though.