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Old 28-05-2004, 08:40 PM
mx5 mx5 is offline
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Join Date: Feb 2004
Posts: 49
Default Re: Yet another Aquamist jet size question

Quote:
Originally Posted by mosk
I get:

550 * 4 * .8 * .15 = 264 cc/min, using the updated chart in this post (http://waterinjection.info/phpBB2/viewtopic.php?t=217). This would put me at either a .6mm or .7MM jet.
No. The 2D kit mirrors a fuel injector IDC to maintain a constant water to fuel ratio. So the calculation in your case for 15% water is just 550*4*.15 = 330 cc/min you're supposed to achieve that with a 1.0mm jet.
It is sortoff iffy though because IMHO over the different IDC the bigger jets don't flow proportionally to the IDC change because of the pressure drop. Then you probably need a priming pump to be sure the water % is constant over the IDC range with a big jet - otherwise at longer IDC the pump can't keep up with the jet and alters the water to fuel ratio.

Wrong section though - Aquamist questions go in the ERL/Aquamist section - because Richard monitors and answers there a lot. Probably at some point he will see this thread here and answer too though ...
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