[s-cars] Water Injection

[Calvin & Diana Craig]

I had actually thought about using the washer resorvoir to mist the
intercooler quite some time ago but I thought it might be like peeing in the
wind.  I would be interested in seeing any results you might get from being
the guinea pig :)
--Calvin


-----Original Message-----
From: s-car-list-admin at audifans.com
[mailto:s-car-list-admin at audifans.com]On Behalf Of Bruce
Sent: Friday, July 05, 2002 9:23 PM
To: s-car-list at audifans.com
Subject: [s-cars] Water Injection


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As usual, I have read so much that I am more confused than when I started.
(Rod, thank you for the great advice and URLs!!).

In the bang for the buck performance category, and especially since my car
sees a lot of track time, water or water/alcohol injection seems like a
pretty good idea. I am going to try it.

I think the safest (but not necessarily the most efficient) approach is to
hit the intercooler with water from the outside. Then I do not have to worry
about failure from water being sprayed directly into intake system and
killing the motor.

I will use the washer fluid reservoir to hold the supply, as I have the
intensive washer system with a separate tank for cleaning the windshield
when necessary.

What do you all think in theory? And should I consider spraying inside of
the intercooler? Any BTDTs? I am thinking about going up in boost (again),
but before I do I think lowering the intake temp is a great idea, and will
help every day. The new/bigger/better intercooler route is expensive and may
also require body/bumper mods which I'm not thrilled about.

Any specific part/.supplier info, and suggested design of system would be
GREATLY appreciated. If done on a budget using a design of spray nozzle,
bracket to aim it at intercooler, water pump, plumbing into the washer
fluid, and some type of switch to activate the system at 10psi or so, could
I do this on a sunny Saturday afternoon?

Thanks!

Bruce
'93 S4 trying to avoid heat soak on the track
  ----- Original Message -----
  From: S4audinut at aol.com
  To: brucem105 at comcast.net
  Sent: Tuesday, July 02, 2002 7:31 PM
  Subject: Re: [s-cars] Two Mechanical Problems at the track


  In a message dated 07/01/2002 8:00:04 PM Eastern Daylight Time,
brucem105 at comcast.net writes:



    What's the deal on water injection? Hard to do? Reasonable cost? How
about bolting in better IC? New bumpers and massive costs, or what?

    Thanks again for help.

    Bruce



  Water injection can be explored for free @ Autospeed.com in Aussie land.
Peruse the free tech articles until you see water injection, there is a full
series where they take a car to fully auto spray based on load conditions
for a few $00. Now available from a company called (I think) Nitrous Express
which sells CO2 spray. Another better alternative is to bolt in a rs2
intercoomer and mount it on the bumper so that you get good air across. This
will double the cooling you have now. I know it can be done, but I never did
tha. I have a 24 x 14 x 3" cooler mounted into the steel inner bumper and
run the stock cover etc. I need more air across, but we still get to within
10 degrees of ambient @ full boost. This makes a big diff on track day or
anytime you dog the car. I can now run thru the gears hard and the thing
pulls as hard in 6th as it does in 1st. Big intercooler = free HP without
chips or any other thing, they just add to.
  Rod
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