View Full Version : e85 in a four banger...


noleranger00
Apr 27 2006, 07:04am
i was just wonderin, after much searching, we cant run our little fourbangers on this e85 mess can we? i still dont trust it too much, but i also figured with such a fuel efficient motor already, we dont much need it... but for curiosity's sake...

gary@rochester.
Apr 27 2006, 07:19am
Nope, at least not without serious modifications.

daveygunit
Apr 27 2006, 07:49am
What do you mean by serious modifications? Injectors? CPU re-map?

pstang
Apr 27 2006, 08:22am
what do you mean by fuel efficient?.... from what i have seen on the 3.0 FFV you get worse mpg not better

gary@rochester.
Apr 27 2006, 09:05am
What do you mean by serious modifications? Injectors? CPU re-map?

Injectors, fuel lines, fuel type sensors, a computer with logic capable of discriminating between gasoline and E85. I assume that if you were set on running ONLY E85, you could get away without having to use and special sensors, but you'd definately have to do some tuning.

what do you mean by fuel efficient?.... from what i have seen on the 3.0 FFV you get worse mpg not better

You're right, mileage would most likely go down, not up. Take a look at some of the other postings in this thread and you can learn a bit more about the chemistry behind this.

BlueMan
Apr 27 2006, 09:11am
Alcohol while cleaner burning, doesn't have as much energy content per gallon as gasoline so it takes more of it, which makes for less miles per gallon (one of the reasons "winter blened" gasolines don't produce as many MPG's).

I can't answer what would specifically be required to run it, but usually it's a bigger fuel system (pump, injectors) that can handle the larger volume of fuel required for high alcohol content, not to mention the possibility of seals & gaskets that are designed for different fuels, and an ECU that knows what it's running.

96refKZ
Apr 27 2006, 08:34pm
not to mention the possibility of seals & gaskets that are designed for different fuels

That's the main reason I never want to touch the stuff. I've read reports, good and bad, and one of the bad ones focused on the corrosive properties of E85. If you don't have an engine built to spec to run on it, don't bother.

gary@rochester.
Apr 28 2006, 06:20pm
The majority of the gaskets in/on the engine are the same for gas and E85. Where you run into differences is any place you have contact with liquid fuel. In the case of the 3.0, the vin U models (gas) have rubber and steel fuel lines whereas the vin V (flex) models have nylon and stainless lines.

RoushRanger
Apr 29 2006, 02:19pm
Ive ran e85 on my truck, it was jus more expensive and I got better milage.. donno what you guys are talkin about.

gary@rochester.
Apr 29 2006, 04:03pm
Ive ran e85 on my truck, it was jus more expensive and I got better milage.. donno what you guys are talkin about.

Then you would be the first person I know of that has had that happen. Most people get between 12 and 16 MPG with E85 in the 3.0. Also, E85 appears to be a bit cheaper than gas in most spots right now.

RoushRanger
Apr 29 2006, 04:16pm
Ah, I got it like 10 miles from where I live at 2.89.. Reg 87 is 3.10 so I jus was like HEY why not try it. Maybe something is wrong with my ECU while running gas.. idk