[s-cars] A4 Track Setup

[Theodore Chen]

--- t44tq at mindspring.com wrote:
> Don't know how many of you own A4s, but any advice on track setup
> for an A4?

no advice specific to an A4, but...

> The A4 might be used for a track day but I need to make sure that
> everything is up to snuff before doing so.
>
> I figure pads are a must, as well as a full system bleed, but other
> than that, what must be done to ensure that the car will hold up to
> track use?

tire pressure, lots of it.  street tires generally have soft sidewalls
and need more tire pressure to keep the sidewalls from collapsing.
i'd probably start in the 40 psi range.  you can always bleed off
pressure.

> I'm wondering if I should or should not run a chipped setup or stick
> with the stock ECU to keep engine temps lower, esp. turbo temps.
>
> Also I wonder if Mobil 1 0W40 can hold up to track use safely- it's
> really light stuff.

fresh oil, whether regular or synthetic.  i'd probably want to use
something heavier for the track.  what's the heaviest oil your manual
recommends?  use that.

> Any inexpensive ways to run brake ducting for track use? I might get
> some dryer ducting to work something up if that's doable- maybe remove
> the fogs to improve airflow to the intercooler as well.

dryer duct works and is cheap.  the tricky part is routing it so that
the tires don't chew it up when you turn, but it doesn't have to last
very long.  wrap the dryer duct with duct tape.  aim the outlet of the
duct at the center of the rotor, where the vanes can pick up the air
and push it through the rotor to its outer periphery.  if you aim
the duct at the side of the rotor, you may be increasing the risk of
rotor warpage.

you're going to have to do something about the rotor dust shields,
as they'll prevent you from getting much airflow into the center of the
rotor.

-teddy


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