Belly pans... RE: [s-cars] Rotor warp
Keith Maddock
Keith.Maddock at trw.com
Mon Sep 9 11:21:31 EDT 2002
For those who claim there is no benefit to running the belly pan... this (brake cooling) is yet another reason to put it back on... (the other significant reason being better airflow to the intercooler, IME)
I like Bob's idea, and will see if I can rig something up like that in a year or two when I am rejoined with my UrS..
Keith, deliberating ducting in der fatherland, Maddock
93 S4 mit ECS Stage II and belly-pan installed in Portland OR
94 968CS hopefully soon in Koblenz, Germany
****************************************************************
Keith Maddock, TRW Automotive, Koblenz, Germany
Slip Control Systems, Systems Design, Traction Control
+49 (0)261/ 895 2474 - - keith.maddock at trw.com
>>> "Bob Rossato" <bob.rossato at att.net> 02:49:51 08.09.2002 >>>
Well there are NACA ducts molded into the belly pan for the purpose of
directing air flow to the brakes and the transmission. Maybe this could be
improved upon by modifying the belly pan by adding in window NACA duct units
like this (http://www.pitstopusa.com/images/BUT7020.jpg) and some 3" hose.
Don't know how much room is directly above these two areas but it might be
worth looking at. The flow isn't as direct as a bumper mount but I think it
should improve the existing setup.
Bob
> -----Original Message-----
> From: s-car-list-admin at audifans.com
> [mailto:s-car-list-admin at audifans.com]On Behalf Of TM
> Sent: Saturday, September 07, 2002 10:12 AM
> To: s-car-list at audifans.com
> Subject: [s-cars] Rotor warp
>
>
> Has anyone seriously looked into brake ducting?
>
> I think a lot of the warpage and cracking problems on
> UrS cars is due to the heavy weight of the car and lack
> of proper brake cooling. Those front brakes are doing a
> lot of work in an environment that is not hospitable.
>
> Porsche, BMW and some others duct their brakes, so I think
> it would be a good idea.
>
> One other thought that crossed my mind- have any of you
> tried installing brake cooling scoops from a UFO-equipped
> car? I don't know if this is possible, but the UFO cars
> have big air scoops behind the rotors as well as rudimentary
> brake ducts under the front airdam ('91 200q20v, V8q).
>
> Those of you warping your rotors on street-driven cars make
> me wonder (esp. when equipped w/ 993tt brakes!). My car has
> withstood some track abuse (granted I drive slow) w/o any
> problems, maybe my brake ducting works, at least enough to make
> a difference?
>
> The biggest problem I see is that there is very limited space
> to run ducts in the front of the car because so much other stuff
> is competing for airflow "space".
>
> Taka
>
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