Quote:
Originally Posted by KirkEvil
That is basically the calculation I first went through when I was selecting injectors, and I came up with 32 lb/hr injectors using slightly different values. The 30 lb/hr SVO ford injectors are rated at 39.5 psi, and LS1 FP is 58 psi... so at 58 psi they should flow ~36.4 lb/hr, and accommodate both of our calculations.
If you back solve those equations with the 110% duty cycle, and 36 lb/hr for horsepower it comes to 598 bhp, which is definitely not what the engine is making.
Also, Im just trying to understand steps 3 & 4 of those equations...Is that supposed to calculate acceptable duty cycle based on max rpm? Ex. the duty cycle calculated with the steps increases with decreasing max rpm and vice versa. The calculations I did when selecting injectors always used 80% for IDC.
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Yes you want to target no more then 80% duty. likewise, with a super charger we used FMUs to push FP well up and still didn't get the flow we were expecting and needed larger Tis was even with factoring in 100 extra HP to "feed the blower".
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