Tell me how that works out for you? If you find a solution (ie) carb that's handles it, Post It!

I've boosted my 11.5 to 1 (96" S&S) with a bit more e85 to the tank to offset, pinging. Ontop of 92 grade. I maybe around 96-98 octang, and it does help out alot on my pinging problems. Or I can carry a bottle of boost, when far away from home.

I roam most of the cornbelt states and find a few stations carring E85 but not all, or when you want E85 for your set-up carb and it's not available? You might be in a bit of pickle! Heavy in gas not "corn gas"

 

Hey you cornbelt folks, you ever try that super gas they sell on the Ohio Turnpike. Made that 95 Evo run like a rocket. I even figured if they pulled me over for speeding, I was going to accuse them a entrapment. You can't build a road like that, sell me that gas and than pull me over for speeding!!!

 

So,
As long as this discussion is going on, how much would the jet sizes have to increase? Running a 31 intermediate and 68 main on my S&S Super E now with 10% 93 octane.

 

That was my initial hope Buddy, that some or many might have some tips.

I've dropped my basically stock mill back to 30 BTC and up to 185 main and still get detonation at high RPM under all but the slightest load.

Maybe some of the westerners have some advice. But in all fairness, I didn't have this kind of trouble traveling and using the stuff when I had to, just the crap they sell here, which is .30 per gallon higher in the last 3 weeks and there is no e85 of signs posted giving a clue what one is actually buying.

According to the guy in Arizona, it's the "real deal" but somehow fuel (even premium) that detonates a stock bike, gets 20% less fuel mileage and costs more per gallon is supposed to be economical and better for the engine. Wonder what his math teachers in school looked like?

 

Let's not confuse E10 and E85.

E10 is your standard 10% blended Ethanol you get at any pump selling blended fuel. This may or may not be labeled as such, depending on where you are. In areas of extra emissions or SMOG control, or in metro areas, you will likely get blended fuel depending on the time of year, or always, and it may have other additives to further reduce emissions, etc. In some areas, like Iowa, the pumps are labeled as such and only certain grades of fuel have it.

E85 is 85% Ethanol, only for use in Flex Fuel vehicles. You will definately know if you're at an E85 pump, they are clearly labeled, usually by themselves or with a single hose, yellow or bright handle, and sometimes giant corn signs everywhere. This is the heavily subsidized fuel that sells for less per gallon than regular unleaded, has roughly 105 octane, and gets roughly 25-30% less fuel economy. Yes, this will damage a vehicle not designed for it.

E10, just fattening the mixture screw should make up for any difference from blended to non-blended. If not, bump one jet size richer and see if that makes any difference.

My 10.5:1 Evo runs just fine on blended 91 octane when it's 120 outside, no pinging or detonation here. You are not going to lose 20% economy on E10. You may burn a bit more, but not anywhere near 20%, depending on your setup.

E85 on the other hand, yes, you are going to burn 25-30% more compared to Unleaded. I suppose one could take a shot in the dark and guess 25% fatter on your jets to get close, and go from there, but I would prefer to have a wideband O2 to pull some numbers from. I would think an S&S carb converted to alcohol would be the right carb, but I would prefer to keep my Mikuni.

The fuel being mandated by the feds for pollution control is not E85, the increase in price is due to many factors, like refinery capacity, and the specific emissions reducing formula of that particular blend of fuel, not the Ethanol being put into it.

My math teechers learneded me gooder than you geev me kredit fur.

 

I'm just a "toothless hillbilly, livin in some hillbilly shack somewhere" and my math teachers didn't like me much... and that was back when it was still legal to beat children in school!


But seriously, thank you for the info, very helpful. (and for being a good sport)

 

i agree with fxd, no jetting changes need to be made with e10, e85 requires roughly 35% percent across the board, we are fixing to break in a gigantic 632 with a single turbo on e85, so it is used for something.