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How To Choose Injector Size?

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Old 06-14-2006, 09:17 AM
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Is there a way to ballpack what injector size is needed?
I used one of those online inject size calculators and came up with needing 600cc injectors.
Didn't feel right to me, so I thought I'd check with you all.
Goal is approx 300bhp-300-whp.

Thanks
Old 06-14-2006, 09:21 AM
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I dont know a way. but i have the same goal and everyone says 550cc or step larger on duel fuel rail setup
Old 06-15-2006, 05:53 AM
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The following is a guide for selecting fuel injectors corresponding to horsepower and fuel pressure . The sizes are estimated using 90% duty cycle of the injector. The sizing of the injector is heavily dependant upon the air/fuel level the engine is tuned at (ex. 11:5 air/fuel will take more cc's than 12:1 air/fuel) :

370cc 220~240whp
440cc 280~300whp
550cc 330whp~350whp
660cc 380whp~400whp
720cc 425whp~440whp
880cc 475whp~520whp
980cc 525whp~600whp
^^^^^^^^^^^^^^
THESE ARE ONLY ESTIMATES smile.gif

If your using a Standalone just go ahead and purchase some 550CC's and above.
Old 06-16-2006, 12:36 PM
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Thanks, I guess I'll go with 440s or 550s. Whatever I can get for a good price.




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