How much power with 750cc's and e85?

[FattyBoomBatty]

Does anyone know what can be expected with e85 and 750cc injectors?

Also, what will it do to O2 sensors? No need to worry about cats luckily. :)

[niterydr]

What fuel pressure? What is your BSFC? What is your expected air consumption?

[rst95eclipse]

If you're running anything larger than a 16g, I think you'll be needed more injector. Your duty cycle might be too close for comfort.

[Goat Blower]

Uhh, I was running 720's with a FP Red, they can handle more than a 16G. I maxed out my Poopra pump before I maxed out my 720's. Even on my old 20G setup, 550's were plenty. Considering that E85 needs roughly 20% more fuel to have the correct A/F ratio at WOT, your 750's now become the equivalent of 625's on gasoline, which is probably good for 25psi on a 50-trim.

[rst95eclipse]

750's now become the equivalent of 625's on gasoline, which is probably good for 25psi on a 50-trim.

My opinion is to always have enough injector. Buy one set and be done with it, so that it will never be an issue again.

[Super Bleeder!!]

Or just have some awesome EMS that can control tons of injectors. Why have a set of four 1600cc injectors when instead you could have sixteen 450s!!

[xveganxcowboyx]

Uhh, I was running 720's with a FP Red, they can handle more than a 16G. I maxed out my Poopra pump before I maxed out my 720's. Even on my old 20G setup, 550's were plenty. Considering that E85 needs roughly 20% more fuel to have the correct A/F ratio at WOT, your 750's now become the equivalent of 625's on gasoline, which is probably good for 25psi on a 50-trim.


I thought it was closer to 25 or 30% more. Either way, those should handle quite a bit.

[v8klla]

Couldn't give you a power number with those injectors, but I can let you know that either E85 or leaded 110 ate up one of our O2 sesnors. However, Santa has been running E85 on a close to stock fuel system with no adverse affects as of yet...

[TalonFiero]

I was at 105% fuel injector on my 780cc with a 60/40 mix of e85/92 octane at 24psi on a gt 35 dynoed at 400whp.

Now I run 1600cc injector at 58% duty cycle at 27psi on 60/40 mix.

Jim

[FattyBoomBatty]

Well, I have an RRFPR with whatever baseline I choose, walbro 255, an sc61 but right now maybe no more than 20psi because I was dumb and got the 2bar posative map sensor instead of the 5 bar, which I should have.