[s-cars] 100 octane gas vs. water injection

[Bruce Mendel]

Rod,

No sweat.

For me, I had gotten to a HP level where I could not realize it all until I
fixed a "bottleneck", which was intake temp/heat soak. That was clear during
the summer, on the track all the time and even on the street.

So I looked into the various methods, and water seemed like the least
expensive, most effective, bang for the buck solution. An intercooler to do
the same job as the water would have been at least three times as expensive,
required bodywork, paint, etc., and my budget just did not allow for that.
Now I can get all the power I'm making, and if I want to go up in power, the
water can be upsized as well with a bigger nozzle and still keep intake
temps low. Plus if I ever get a different turbo car (god forbid!), I can
move it over with me.

Plus, with the ~$2000 I saved, it'll pay for eight more track events next
season. :)

I'm curious about cylinder pressure as well....you think it's much
different/worse than 26 lbs of boost to begin with? Maybe time for a metal
head gasket!

Bruce
----- Original Message -----
From: <S4audinut at aol.com>
To: <brucem105 at comcast.net>; <igor at s-cars.org>; <s-car-list at audifans.com>;
<Audi20V_Kruemmer at yahoogroups.com>;
<Audi5zylinderturbotechnik at yahoogroups.com>
Sent: Friday, November 01, 2002 10:27 PM
Subject: Re: [s-cars] 100 octane gas vs. water injection


> --
> [ Picked text/plain from multipart/alternative ]
> In a message dated 11/01/2002 8:16:14 PM Eastern Standard Time,
> brucem105 at comcast.net writes:
>
> > >>I agree it's not like turning up the boost, but it is exactly like
> > getting a
> > >>big fat effective intercooler, and has some extra benefits as well
like
> > >>cleansing the combustion chamber and sneaking in some extra fuel if
you
> > need
> >
>
> I wasnt condemning the practice and it may be the most cost effective way
to
> run a car hard. But as you said (if I remember) that you didnt look at it
as
> adding power. I am afraid my obsession with getting 500 at the wheels
colors
> the way I look at things in general and I really dont think in terms of
the
> cars except as a way to go really fast very quickly. Sorry if I sounded
like
> I was condemning, You can and should see what the  cylinder pressure is
when
> pumping the water, you might be surprised how much higer the pressure will
> run when you are injecting water, one of the list engineers could probably
do
> the math and tell you, I have heard that pressure runs very high.
>
> Rod
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