<VV> Water injection question

[levair at aol.com]

I've used water injection for years before the compressor.
My system used a tank pressurized by turbo boost which is therefore 
proportional to boost.
The calibrated leak to determine injection onset is used to further 
vaporize the mist of water by blowing on the water nozzle outlet. .
  No problems yet---gas line antifreeze added in winter..

Warren

-----Original Message-----
From: kevin nash <wrokit at hotmail.com>
To: virtualvairs at corvair.org <virtualvairs at corvair.org>
Sent: Fri, Oct 22, 2010 12:08 am
Subject: Re: <VV> Water injection question



>
> Message: 1
> Date: Thu, 21 Oct 2010 16:47:05 -0700
> From: "jimster1" <jimster1 at earthlink.net>
> Subject: <VV> Water injection question.
> To: <VirtualVairs at corvair.org>
> Message-ID: <817B5B2C863740D894C96D0144C0B7A1 at daddy>
> Content-Type: text/plain; charset="us-ascii"
>
> I'm in the process of getting ready to install my DCOE and I think 
water
> injection is a good form of insurance. The question is, should one 
inject
> before or after the turbo. I have no pump at the moment so that is not
> (yet) a factor. All you water dogs, please chime in.
>
> Jim
>
   Jim- Yes, you can inject before the turbo- but only if you can get 
the water droplet size down to the same size as the gasoline droplets, 
which are approximately
   50 microns (?). A little larger than that and the turbo starts 
slinging water into the sides of the housing, then pools up in the 
bottom of the housing, and can then
   gravity feed to the rest of the engine. Bad news! If the water 
droplets are alot larger than the maximum size, its about as good for 
the turbo as shooting rocks
   in there! To ensure proper atomization, you need lots of pressure, at 
least 100 psi. If you get a 100psi+ pump, you dont really have much of 
a reason to be injecting
   from the draw side anymore. The only reason people ever did draw thru 
water injection was to avoid having to use such high pressure pumps- 
you WILL ruin
   your turbo very quickly if you try a poorly atomized injection from 
the draw side.
  Kevin Nash
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