E85

[SC1596]

Originally Posted by jmarkaudio

Maybe I can help a little here. I've messed with E85 for a bit now, put together a few Dominators and converted a 1.500 venturi Demon. We did some dyno testing with a 358, ran over 30 gallons with testing. There are some things that are different with E85/ethanol over gas and methanol, the viscosity of the fuel is quite a bit higher than both. So far we have seen like one of the above posts that it does not like large emulsion bleeds or air bleeds in the mains, we've seen improvements with e-bleeds as small as .014". 4150 carbs 750 up are usually in the 90's for jets, 1050 Dominators with no skirts are around .145, .160's for an 1150 and .170's for a 1250, all 2 circuit. The 1050 would probably be best with mainwells between gas and methanol, but for bracket racing works fine with 4150 2 circuit methanol blocks. The 1250 must have methanol 2 circuit blocks, booster pins, and banjo's to get sufficient fuel, you might be able to get away with smaller with a 3 circuit setup, but I'm not crazy about 3 circuit with the exception of methanol.

What improvements have you seen with the smaller e-bleeds? Did it require smaller main jets after that?

[jmarkaudio]

Originally Posted by SC1596

What improvements have you seen with the smaller e-bleeds? Did it require smaller main jets after that?

No, just killed power when we tried more or bigger. I'm not a fan of using emulsion to emulsify fuel anyway, emulsion is there to correct the difference in the AF curve caused by using a booster. E85 is even more sensitive, too much emulsion and the power drops.