[EFI] Source for high pressure 12v water pump

[Bruce]

What size is/was the orfice?.
Bruce


----- Original Message -----
From: "Matt Henson" <hensonator at yahoo.com>
To: <diy_efi at diy-efi.org>
Sent: Monday, October 22, 2001 2:49 PM
Subject: Re: [EFI] Source for high pressure 12v water pump


> I've played around with the shur-flo pump for WI.  I
> think that the pressure rating has more to do with the
> shut-off switch than the pump itself.  I found that
> the pump I used (thought it was 80psi.. it's the
> higher psi one from Northern Tool).  The maximum
> pressure of the pump was > 200PSI if I bypassed the
> pressure switch.  I don't know how long it would last
> at that pressure but I tested it at 175PSI for about 3
> hours without a leak or failure.  At 12 seconds a shot
> that's a lotta runs before the pump goes kaput.. Also,
> using the Aquamist nozzel, I couldn't see any
> significant vaporization improvment above about 60PSI.
>  Mostly it just dumps more water with higher pressure.
>
>
> I set my system up to recirculate the water, just like
> a fuel injection system.  I modulated the water pulse
> width to match RPM and boost so that I got more water
> with more power.  I suppose that it would have been
> simpler to use manifold pressure to bias the water
> pressure, eliminating that requirement from the
> control system.  Anyway, it all looked pretty good but
> I never put it into use.  Decided to just fix the
> poorly designed turbo system instead of patching it
> with WI.  Maybe if I spent more time at the 1/4 mile
> track WI would be more appealing..
>
> -Matt
> '95 M3 Turbo
>
> -Matt
>
>
>
> --- Daniel Houlton <houlster at user1.inficad.com> wrote:
> >
> > Here ya go:
> >
> > Shurflo 60 & 100 psi, 1.4 gpm pumps for $80.  You
> > won't find
> > the 100 psi pumps cheaper.
> >
> > http://www.pro-spray.com/sprayer_pumps.htm
> >
> > --Dan
> >
> >
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