FW: 1990 Fuel Injector Sizing and maximum duty cycle

[Lewis, Gary M]

Thanks Jim.

Here is what I was figuring, and if you all think I'm wrong through better
numbers, PLEASE tell me...

380cc per injector (seems like a fairly common number injector wise), 90%
duty cycle(I know, doesn't apply, but I need to scale it somehow), 5cyl
motor

380cc*90%*5cyl = 1710cc's MAX fuel

The water-injection goal is 10% to 25% of total fuel...

So:
1710cc x 10% = 171cc H2O/min
1710cc x 20% = 342cc H2O/min

On a 100psi/7bar pump, I'd need at least a .8mm nozzle, which delivers
215cc's at 70psi/5bar to 330cc's at 100psi/7bar pump.  Remember, 2.0 bar
minus 7 bar = 5 bar, so the .8mm nozzle would most likely flow 215cc's min.
Probably better to get the .9mm