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]

Originally Posted by Goat Blower

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]

Originally Posted by 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.

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.

[Goat Blower]

I've got twin HP Walbro 255's, 720cc primaries and 450cc secondaries. I should be ready for E85 next year. That will be replacing my 100 octane unleaded I've been using for years. I've been hearing great things about it.

[FattyBoomBatty]

What managment system will you use, if you don't mind?

[JET]

Originally Posted by 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...

The E85 ate up O2 sensors? Crap, that is one of the big reasons I wanted to go to it. That and it should be more consistent than the 111 from Bobby & Steves. Are you using the Bosch WBO2 sensors?

[FattyBoomBatty]

What about cars meant to use e85. My dad's van is set up for it, and he hasn't had any issues I think. I think it threw a CEL but it went away? I'll ask him, but he uses e85 all the time. It smells like dinner when he drives off.

[tim]

Originally Posted by JET

The E85 ate up O2 sensors? Crap, that is one of the big reasons I wanted to go to it. That and it should be more consistent than the 111 from Bobby & Steves. Are you using the Bosch WBO2 sensors?

E85 will not eat o2 sensors. It was more than likely the leaded 110. Alchohol(e85) is not bad for 02 sensors, lead is.

Use the E85, dont worry about anything except for the possibility of corroding the aluminum pieces in your fuel system. Even that I wouldnt worry about it to much with how much you drive your car.

1.79 for 105 octane, hell yeah.

[TalonFiero]

Speaking of the stuff at bobby and steve's gas, I get less knock on my 60/40 mix than I do straight 111 race gas at bobby and steve's. That doesn't make sense since my 60/40 mix should be around 100 octane or else bobby and steve's race gas is shit.

[rst95eclipse]

I think it smells more like popcorn

[tim]

Originally Posted by TalonFiero

Speaking of the stuff at bobby and steve's gas, I get less knock on my 60/40 mix than I do straight 111 race gas at bobby and steve's. That doesn't make sense since my 60/40 mix should be around 100 octane or else bobby and steve's race gas is shit.

Octane rating aside, is it just the alchohol? Cooler burn?

I havent researched it enough to know the true answer.

[FattyBoomBatty]

Originally Posted by tim

Octane rating aside, is it just the alchohol? Cooler burn?

I havent researched it enough to know the true answer.

Well, This thread has been pretty helpful so far, but, I think my fuel rail might be aluminum, and I will get that coated and possibly my intake manifold, but the head gets to suffer the wrath of corn booze.

BTW, does anyone know what kind of long term damage an aluminum piston will suffer? Maybe none since the fuel is burning in there?

[TalonFiero]

Originally Posted by FattyBoomBatty

Well, This thread has been pretty helpful so far, but, I think my fuel rail might be aluminum, and I will get that coated and possibly my intake manifold, but the head gets to suffer the wrath of corn booze.

BTW, does anyone know what kind of long term damage an aluminum piston will suffer? Maybe none since the fuel is burning in there?

I drove all summer and late last year on e85 mix and recently replaced my head gasket. Wisecos were fine, head did not look to be any worse for the wear and the fuel rail is fine.

It is my understanding that ethanol needs water to be present to really become corrosive to aluminum. Either way 7,000+ miles shows no detectable wear. I would be more concerned with the rubber fuel lines before the fuel rail.