Anyone use these, Carbon Cooling Ducts?

[Dan_csl]

http://www.simpsonmotorsport.co.uk/bmw-tuning/product.asp?id=67&pid=67&cid=7&pcid=12&product=89

As above, anyone use these, do they actually make a real world difference and are they worth it?

Thanks :thumbs:

[Thorney]

Only really useful if you run a bumper with brake ducting running from it (like the CSL Cup cars). We tend to be all old school and run a hose to the back of the disk/hub as there is no fixings at all on the hub to avoid any extra stress with fitting etc. We supply TMS stuff now so I would imagine it works well (a lot of their stuff does) but we dont both on our race cars and for a track day car I'd say it was overkill unless you had a CSL Cup style front bumper.

[shimmy]

http://www.simpsonmotorsport.co.uk/b...=12&product=89

As above, anyone use these, do they actually make a real world difference and are they worth it?

Thanks :thumbs:

seen it done and with air inlets from the centre front grille but imho that is taking cooling away from the engine bay

liek john says you will ned double holed bumper ideally but as ive never had a cooling issue witht eh APs on track days no point - maybe with stock brakes it might pay dividends

[TMAQ]

air inlets from the centre front grille

similar to this maybe

[Dan_csl]

Fair enough guys, I'm leaning towards a BBK anyway I think, just wondered if these were worth it but might just bite the bullet and buy a big kit, buy once, buy right and all that! lol

Thanks for the replies

[shimmy]

similar to this maybe

yep even worse if youve got a 'charger'on it but they probably have no a/c radiator and unit, an oil and diff cooler so they have more cooling anyway

[NZ_M3]

You can cut two holes in the bottom plastic engine tray and put 2 NACA ducts there and run the tubing from there to the back of the hubs/disc - I've seen it done in the USA from those with the CSL bumpers - I'll see if I can track down a photo - personally I thought that was quite clever!!

Found them!! Although he didn't use NACA ducts ... but works the same nevertheless.





Perhaps something like this can be fabricated? Maybe a carbon fiber undertray with the NACA ducts moulded? Thorney??



And brake cooling does make a huge difference to our cars - the CSL front bumper is really poorly designed in terms of any form of brake cooling ...

Here's some empirical evidence from the States by Preeth before he was banned from m3forums:

The Bimmerworld Kit may be ridiculous, but from the last track event...here are the brake rotor temperatures

Lightwerkz
Alcon 4 wheel BBK
BW Brake Cooling Kit
Temperature: 197 degrees F

PKumarM3
Stoptech Front BBK
NO Brake Cooling Kit, No Fog Lights
Temperature: 383 degrees

TheDough
Stoptech Front BBK
NO Brake Cooling Kit, Fog Lights
Temperature: 414 degrees

Tonggi
ZCP Brakes
No Brake Ducts, No Fog Lights
Temperature: 498 degrees F

The brake cooling kit makes a difference. A Huge difference. Whats to worry about is, does the brake cooling kit cool the rotor down too much that the rotors are too cool for the brake pads to work? I guess this allows you to run less aggressive brake pads.
Either way, I was killing it w/my PFC 01s.

[Dan_csl]

Excellent reply thanks mate, and well worth looking into the undertray as well if you ask me!

[nick///M3]

You can cut two holes in the bottom plastic engine tray and put 2 NACA ducts there and run the tubing from there to the back of the hubs/disc - I've seen it done in the USA from those with the CSL bumpers - I'll see if I can track down a photo - personally I thought that was quite clever!!

Found them!! Although he didn't use NACA ducts ... but works the same nevertheless.









And brake cooling does make a huge difference to our cars - the CSL front bumper is really poorly designed in terms of any form of brake cooling ...

Here's some empirical evidence from the States by Preeth before he was banned from m3forums:

something like this i am planning for my car also..allready got the cooling ducts installed on the car made the holes in the sides of the under tray but i am thinking what to do with the front part....something with "oval" shape and a grill in front...i a month or so i have to have it ready !!!!!!:banghead: