Injector question
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MAGNUM SE7EN
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Injector question
I have the upgraded secondary rail with 1600's. Should I move the 850's to the primary rail to replace the 550's or just leave the 550's there. The turbo is a T-78 and boost will be anywhere from 15-22psi.
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Whoa, hold on a minute. I know some people run the 550/1600 setup with absolutely no problems. I think that is plenty of fuel, however I know other people go ahead and put the 850's in the 550's place. I think Poweraxel did this somewhat recently. I'm fairly certain he was running a T-51 with the stock 550's. I just want to know if I should use the 850's and if so, why?
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Originally posted by 93blackr1
850's are fine just have to re-tune the duty cycle of it at idle and under load.
850's are fine just have to re-tune the duty cycle of it at idle and under load.
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Originally posted by KraftDinner
550cc with possibly up to 22psi of boost? Eeek
550cc with possibly up to 22psi of boost? Eeek
What am I missing?
BTW, I love your handle. I'm Canadian myself. You should read this if you've never seen it:
http://www.bigrigindustries.org/cheesy/
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The rule of thumb is basically the primaries are properly sized such that the engine would idle smoothly, while the secondaries will supply additional fuel for higher rpm, high load situations. So if you put a large injector, the engine would not able to idle at normal RPM, since the injector is supplying too much fuel, even with the shortest pulsewidth.
I also prefer using low impedance injectors because they have faster response compared to high ones, thus take less time for the injector to fully open.
It is possible to use a large high flow injector on the primaries if it's low impedance and can adjust the pulsewidth less than 1.3 ms. Just my .2 cents
I also prefer using low impedance injectors because they have faster response compared to high ones, thus take less time for the injector to fully open.
It is possible to use a large high flow injector on the primaries if it's low impedance and can adjust the pulsewidth less than 1.3 ms. Just my .2 cents
Last edited by 93blackr1; 07-26-02 at 11:05 AM.
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Originally posted by KraftDinner
Well I fear with only 550 cc primaries, the boost may get high enough that he would be leaning out before the secondaries come on line.
Hahhaa, thanks
Well I fear with only 550 cc primaries, the boost may get high enough that he would be leaning out before the secondaries come on line.
Hahhaa, thanks
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