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Message
1. Do not use injectors that are to large. Go to the
RC Engineering web site (www.rceng.com) and calculate the size you need based on
HP needed and an 80% duty cycle. (225 HP requires 4 injectors of 38 lb
each at 80% duty cycle, fuel pressure of 38 PSI, and a BSFC of 0.5)
I just spent some time
looking at the RC engineering site, as well as the other fuel injector sites I
could find. In each case, these calculations are made without ever asking
about rpm. I just don't see how they can do that ??? How do they
know if my 225 HP would be at 2000 or 10000 rpm? The same amount
of fuel will have to be delivered in either case, but you'll need a whole
lot more flow rate to deliver the fuel at 10000 than you would at
2000.
Now, before anyone says
it, I know that Tracy's using those wimpy injectors with his current system,
making 200+ HP at 7000+ rpm, and isn't having any problems, so clearly
they're big enough. I really hate it when he does that
:-)
Rusty (prop and
bolts arriving tomorrow)
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