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I've read there is a needed ratio, I believe it was an auotspeed article that said, "However, testing on aircraft engines indicates that the mass of water required to suppress detonation is 20-30 per cent of the weight of the total liquid charge (that is, the water plus the petrol) being consumed." Also they referred to properly increasing water w/ increasing airflow. I've read that having a single h2o inj flowrate you have to set the system up to come on at a mid psi so the water flow doesn't cause hesitation at lower boost levels. Now with that in mind and the fact that if you don't flow enough water it won't do diddly squat, Is there a ratio between hesitation and no cooling/preventing detonation effects?

My thoughts are, if you use a high speed valve that turns water on at a lower psi that will allow you to flow less water at lower psi and more at higher psi w/o hesitation, you will be cooling air from the beginning and improving detonation prevention at higher psi. To think about a reg pump and nozzle setup, your nozzle pressure drops w/ boost press so more h20 is flowing in the beginning than in the end and ontop of that you're dumping it in at mid boost, doesn't sound right, eh? Ofcourse these are just my thoughts and opinions. Brad probably has had some experience w/ the different setups. Wonder what he prefers?

posted by 66.54.17...

• My "brilliant" idea for $5 dollar water injection-->, roman, Mon, 14 Oct 2002 15:39:01
  • Welcome to the Board, Andy E, Tue, 15 Oct 2002 00:21:58
    • Info on my home made water injection system....., Taylor, Tue, 15 Oct 2002 02:37:49
      • Exactly what I had in mind except-->, roman, Tue, 15 Oct 2002 09:07:08
        • Fuel injector for h2o info., Ubipa, Tue, 15 Oct 2002 12:43:22
          • Re: Fuel injector for h2o info., Simon S, Tue, 15 Oct 2002 14:49:20
            • It's the pump that makes basic Aquamist package $$$..., Eric van Spelde, Tue, 15 Oct 2002 15:41:51
              • pump, or high speed valve, Ubipa, Wed, 16 Oct 2002 09:32:07
                • Yes and no, Eric van Spelde, Wed, 16 Oct 2002 11:13:52
                  • Re: Yes and no, ubipa, Wed, 16 Oct 2002 11:45:11 <-- Viewing This Message
                    • Assumptions correct..., Eric van Spelde, Wed, 16 Oct 2002 14:21:15
                    • Re: Yes and no, Brad, Wed, 16 Oct 2002 13:42:14
        • Re: Injection...., Taylor, Tue, 15 Oct 2002 11:08:50
  • ?, Chad B, Mon, 14 Oct 2002 17:53:59
  • Max is right. The H2o must be atomized or the..., Taylor, Mon, 14 Oct 2002 16:23:51
    • I think I was unclear-->, roman, Mon, 14 Oct 2002 16:31:12
  • Re: My "brilliant" idea for $5 dollar water injection-->, Max, Mon, 14 Oct 2002 16:09:56

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