Re: H20 injection/ wasTruck Intercooler?

["Fred Munro" <munrof@isys.ca>]

----- Original Message -----
From: Jason Gray <jason510@worldnet.att.net>
To: Quattro List <quattro@audifans.com>
Sent: Saturday, August 28, 1999 5:00 AM
Subject: Re: H20 injection/ wasTruck Intercooler?


>
> >Well, I've always thought of water injection (by which you mean
> >water sprayed on the intercooler or into the intake?) as sort of
> >a bandaid for poor intercooler system design.  What happens a
> >half-hour into the "prolonged period" when you run out of water?.
> >
> >Eric Fahlgren
>
>
>  If you drove around on public roads at 30 minute intervals at high turbo
> boost levels you would eithor be dead or in jail. 10-20 seconds of maximum
> boost is enough to propel a high performance turbo car to speeds greatly
in
> excess of safety and legal limits!  You only need the water injection
while
> at maximum boost (short periods of time) so consuption of the H2O is very
> low. I go through less than 1 gallon of H20 per tank of gas so just have
to
> remember to top off the injection reseviour in approximatly the same
> interval as fuel fillup.
> Factory cars dont rely on water injection because the general public is
way
> to lazy to remember to add the water regularly. There was a factory
> turbocharged oldsmobile in the early  60s and they all blew the motors
when
> the owners forgot to refill water.
>
> The benefits of H2O injection are twofold. 1) you inject water directly
into
> the turbo compressor and it turns to steam adsorbing latent heat from the
> compressed air. 2) when the steam is introduced into the combustion
chamber
> it slows the flame front travel thus preventing detonation and allowing
> increased boost levels (and more HP). Water is a very effective
> anti-detonate (like adding octane boost products or methanol or tolulene
to
> gasoline).
>   Too much water will lower the power (by drownding out the combustion
flame
> travel) but just the right amount works wonders. The vaporized H2O also
> "steam-cleans" the carbon deposits from the combustion chamber walls
> preventing carbon hotspots and raised compression that contribute to
> detonation.
>
> Later-
> Jason K Gray
> Wasilla Alaska


    I experienced all of the benefits listed above when I built a water
injection system for my '67 Rover 2000TC to compensate for the disappearance
of high octane leaded gasoline in the '70's.

Fred Munro
'91 200q  280k km