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Thread: Naturally aspirated e85 timing

  1. #1
    Forum Member Randys88's Avatar
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    Default Naturally aspirated e85 timing

    E85 N/A timing?
    What are you running at idle and full advance? I just converted my 363 to e85, I was at 16 base 36 full advance on pump 93, now I'm at 24 base 44 full advance on e85 and still doesn't fell as strong as it was on 93 pump.
    My set up is 363 11:1 Comp trickflow twisted heads victor jr holley xp 850 e85 carb

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    Club Member Beigg's Avatar
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    Was the volume of fuel changed when the changeover took place? 25 to 30% more fuel is typically needed when going from gasoline to e85.

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    Forum Member Randys88's Avatar
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    I went from a gas carb to a holley ultra xp e85 carb

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    Club Member Beigg's Avatar
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    how fat are you running the fueling? You'd typically need to richen it up 4.5 to 5.4 over gasoline's stoich & PE ratio. I'd start around 9.8:1 & as you command WOT, increase the PE fueling to achieve about 6.9:1 or 7.1:1.

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