Source for high pressure 12v water pump

[Mark Chauvin]

Dave,

Any idea where you would get a tank for that setup?  A small air
reservoir from Sears would work I guess, but how would you put the
water in?  And how would you make sure just water goes out, and not
air (bubbles)?  I saw a web site where a guy used a tank with a
bladder, but it looked very tedious to refill it.

Or, would it be possible to blow the compressed air into the intake
path, through an eductor to suck the water into the air stream?  Like
the miracle grow lawn feeders.  I  don't know if that would put enough
water into the engine, but it sure would atomize it, don't you think?
I really like the idea of an air tank.  I was in walmart last night;
ten bucks will get you a portable 125psi air pump.  And it's
instant-on.  No waiting for the pump to pressure up.

Stephen, I did a search on this awhile back.  Sureflo makes some nice
pumps that go up to about 70psi, I think:
http://www.shurflo.com/
but they say their pumps won't handle anything flamable (you are going
to mix alcohol w/ the water, yes?)
Here's one that'll do 60psi:
http://www.northerntool.com/cgi-bin/ncommerce3/ProductDisplay?prrfnbr=9414&prmenbr=6970

Flojet also sells some:
http://www.flojet.com/
don't know if they can handle alcohol.  Maybe they all can, if you mix
in a little lube (Redline sells some alcohol top-end lube).  Their
catalog they sent me lists a D7135B7011 that'll do 100psi at 2.2gpm,
and is made of "chemical resistant parts", but I couldn't find it on
the web site.  I haven't investigated further.

Here is a site with parts list:
http://home.att.net/~stevemon/AlcoholInjMod.html
And one for a Buick:
http://www.gnttype.org/techarea/fuelsystem/alkyrecipe.html
And another:
http://www.dawesdevices.com/howto.html

And these people sell solenoids pretty cheap:
http://www.poweraire.com/index.htm
And if you want to use a misting nozzle instead of NOS:
http://www.mcmaster.com/

(Gosh it's nice to contribute instead of just read read read...)

hth
-Mark

On Tue, 16 Oct 2001 21:42:00 -0500, you wrote:

>
>-> I'm trying to source a 75 psi 12v water pump for use in water
>-> injection.  Web searches for such items are very time consuming and
>-> so far not productive.  Anyone have any ideas?
>
> It might be simpler to use one of the small 12V portable air
>compressors from K-Mart to pressurize a tank.  Some of them will run
>over 100 PSI, probably for bicycle tires or something.  Then all you
>need is a 12V valve.  They make them for liquid, but Bimba and others
>make stainless steel air valves which would work just fine for water.
>WW Grainger or McMaster-Carr can get those.
>
> The reservoir would stay under pressure all the time; any leakdown
>would be made up within a minute or two after restart.  Volume change in
>use would be very slow, so there's not much chance of overrunning the
>compressor.
>
> Stripped of their plastic housings, some of the compressors are quite
>small.  You might also be able to scavenge one from a '70s or '80s
>Cadillac or Olds with the automatic ride height adjust - your choice of
>12V or vacuum(!) operation.
>
> You also get a source of compressed air right in the car, handy if you
>autocross or do track events.
>
>==dave.williams at chaos.lrk.ar.us======================================
>I've got a secret / I've been hiding / under my skin / | Who are you?
>my heart is human / my blood is boiling / my brain IBM |   who, who?
>============================== http://angelfire.com/ar/dw42/index.htm
>                                             
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