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#29
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#36
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#37
Senior Member
5th injector is a better solution IMHO. Cams with big fuel lobe will help some but you will still be very close to the injection time limit if you rev high. If you ever want to do full E-85 cams only will definitely not work for your setup you will have to have a 5th injector.
#39
Senior Member
Fortys sky LNF on stock turbo and e-85 with zzps cams with big fuel lobe was right on the injection limit and the edge of dropping rail pressure on stock turbo. Made 440 wtrq and 368 whp maxed out. E-47 with the bnr 2871 and 27 psi was right on the injection limit. We have since added a 630cc 5th injector setup and full e-85 but have not tested it yet due to him being on the other side of the world right now. If you are planning on more than 380 whp on full e-85 you will need a 5th injector.
#41
Senior Member
450 whp and similar trq on e-85 will require 10-11ms injection times in the midrange and 8-9ms up top which is longer than you have to inject. Even with 2500 psi rail pressure and maxed out injection start angle you are past the injection window and will have misfires. Cams will not allow for longer injection times nor will they shorten them by very much. At that power level and fuel mass you have to shorten them via an extra injector.
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