Thread: E85 for track days?

I was just wondering what others thought about using E85 for a track day as a safety measure instead of race fuel?

When I've gone to the track, I would run a few gallons of race fuel just to be 'safe' because of the high temps and conditions the engine is under. Anyways, I've thought about making an E85 tune and running 100% E85 for track days instead. This will be cheaper and more accessible as a fuel.

Any reason not to do this or other thoughts good or bad?

Sounds good to me, personally I would do this myself if there were E85 stations in my area or by the track I go to. E85 burns cooler, cheaper than race fuel, and almost performs as good. I like the sound of that. As long as your fuel system is up to par with pushing +/- 30% more volume, you'll be good.

My old nx was tuned for E85. I had 1000cc injectors, comparable to 94lbs injectors which is good for around 450 so you should be good on the injectors. Where you get the biggest gain with E85 is your compression. High compression with turbo is ideal, 10:1 or so would be perfect. Mine was 9.5:1 with 12lbs and put out 330hp. It is a great fueling alternative and you can run an ass load of timing. Go for it man.

"E85" ethanol content can vary as much as -25%. E85 has been tested to be as high as 90% ethanol, and as low as 60% ethanol. Imagine what happens to your engine when you get a low ethanol tank of fuel. To counteract this you should test for the ethanol concentration every time you fill up, and adjust your tune accordingly. This might not be something you want to deal with.

Or run a flex fuel sensor