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Old November 11th, 2011, 07:30 AM   #168
forbitel
ninjette.org member
 
Name: telecom
Location: Toledo, OH
Join Date: May 2011

Motorcycle(s): 2010 Ninja 250r

Posts: 43
Quote:
Originally Posted by greg737 View Post
I'm guessing you got this information directly from Matt.
Yes, That info I got it from Matt/Ecotrons

Quote:
Originally Posted by greg737 View Post
The 80g/min injector = 80/453.6*60 = 10.5pounds/hour which converts to 110cc/min
and the 128g/min injector = 128/453.6*60 = 16.9pounds/hour which converts to 177cc/min
Your calculations look good to me, I get 80g/min = 111cc/min, and 128g/min = 177.78cc/min

Quote:
Originally Posted by greg737 View Post
The "take-away" message for people building a do-it-yourself fuel injection project is that with injectors there is a relatively small flow-rate size range that will work for any particular engine size and configuration. If you're not careful you can end up in an un-tuneable situation with injectors that are too small or too big.
(Unlike everything else in America "bigger isn't necessarily better")
I Totally agree with you, Bigger than needed Injectors will not allow you to idle correctly, and too small injectors will not supply enough fuel at the top end
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