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E85 ?

Joined Sep 2017
595 Posts | 121+
Lansing Mi
I did some searching and didn't find anything related to this. Have any of you midified to use 'flexfuel' e85? For my previous bike there was a company that sold a carb rebuild kit that allows you to run e85. The way I understand it, rubber seals and jetting is all that is needed for a carb engine. Also, from what I read, people are making big power off of e85. Of course that is on built engines. I was just curious. E85 usually has 105-110 octane.
 
Either an engine is designed around gasoline, like Ducati did, or ethanol.

Good luck with your project.

You might note how every powersports manufacturer, like Ducati, VOIDS the warranty if an owner uses any fuel contaminated with more than 10% ethanol.
 
As stated above, "I was just curious". We can't hide behind a waranty for ever. Some of us will eventually do some actual work to these, i.e. big bore, head work, or even a full rebuild. My waranty is gone and I'm not afraid to work on these. But, as i stated, I was just curious.
 
Your fuel mileage will be cut in half almost...Takes almost twice as much ethanol as gas to to create the same fuel burn/power.
 
For the price of admission to experiment with alternative fuels in search of a performance gain, I think there are proven alternatives.

For my hard earned money the best money spent is with suspension upgrades.
 
I don't think you understand that this was just an inquiry. Not that I am perusing this for one reason or another, just to see if it had been attempted or if anyone has had similar thoughts . As it sits right now, when someone does have an interest in this(it will happen) and Google searches/forum searches for e85 hypermotard, they will be met with your negativity and waste of time, having nothing to contribute other than 'not me, I don't like this. No one should try anything outside authorized approved items. It voids warranty. Nothing useful what so ever.
 
I guess that my responses are based on so much experience with the effects of ethanol on the whole powersports industry. Very negative effects.

Interesting that in Brazil, where there are numerous autos with engines designed to run on ethanol, the market prefers gasoline, since the oil fields were developed.

Yes, you are correct that certain high performance engines do very well with ethanol. Higher compression allows ethanol to yield horsepower increases. Merely modifying fuel system to remove parts corroded or dissolved by ethanol will merely allow the use of E-85. Without an increase in compression, there will be a significant horsepower reduction with E-85.

The Ford Model T would run on ethanol or gasoline. Ethanol because farmers could make their own in a still. Well, that and whisky too, from their excess grains. Model T owners preferred gasoline too.

The sad reality of turning food into fuel is the significant increase in pollution that comes from burning ethanol in gasoline engines.

The primary issue with ethanol stored in gas tanks is the absorption of water and subsequent phase separation.

So, yes there is a wealth of race engine info on ethanol modifications. I have yet to see any movement over on AdvRider.com, or any other motorcycle forum, toward modifications necessary to burn E-85.
 
Maybe the fuel tank could take ethanol above 10%?

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LINK: Neutralize ethanol-plastic effect? | Adventure Rider
 
That is some very good input. Thank you.

I brought it up because I remember seeing a kit to convert the drz. But the drz is very basic engine and has been unchanged since 2000 giving a large wealth of trial and error along with full disclosure of said trial n errors. I recently put e85 into my flexfuel truck. It is winter in Mid Michigan and turns out, the truck starts very hard every morning and again when I leave work when temps are lower than 35°f. Apparently hard start in the cold is a known issue for my truck and e85(truck only had 26,000 mikes on it and usually use gasoline). That sparked a huge debate among the f150 group and the potential of energy created using e85 vs gasoline. Which sparked my original question.
Thank you for taking the time to shed a little light on this.
 
In 1999 we were paying 99 cents for gasoline. After that there was a speculative push to get oil up, driving the price per barrel to $147. Crazy.

Many looked to alternative fuels as gas prices shocked consumers.

We saw diesel motorcycle discussions. We also saw a self-reliance push towards ethanol. Anything to find a way to reduce our fuel use, or avoid oil as much as possible.

Tons of conversions for vehicles to natural gas too.

Now that we are benefiting from the Texas developed fracking of tightly held oil and gas deposits, there is no more shortage.

No reason to fret, no more reason to turn food into fuel.

Ducati lost the lawsuit over ruined plastic gas tanks, and replaced bulging tanks with new ones that could deal with 10% ethanol. Whether those new gas tanks, or the tanks made after 2012 can deal with more than 10% ethanol is an important question. I suspect that if the ethanol content hit 20% we will see bulging gas tanks again. I say 20% because of the DOE tests on vehicles.

Ethanol is very corrosive. It dissolves so many of the gasket/o-ring materials.

In humid areas, where a vehicle sits for more than a few days, the moisture collected by the ethanol will separate. (As you recall, ethanol is added to gas tanks in the frozen north to absorb water.) This phase separated gas/ethanol/water will harm an engine when started.

I'd recommend that you enjoy the low gasoline prices. Many areas even offer gasoline which remains uncontaminated by ethanol. Sadly, in my area EPA mandates that all gasoline include 10% minimum ethanol. Stations here are now pushing 15% ethanol.

Go with the fuel Ducati designed every component to run well with. Gasoline.

Remember also, that especially with a cold engine, there is a bit of fuel that washes past the rings into the bottom of the engine. Do you really want ethanol in with the lubricating oil?
 
I remember .99$/gal. Back then we laughed at the thought of buying bottled of water at the gas station. I was a lineman for AT&t (Still am) back in the day before internet, Woking on land lines. Ran into a 21yo female while working and the subject of 'land lines' came up. Her response "what is a land line". LOL
I appreciate you taking the time to shed some light on this idea.
 
Your original post referenced carbs and jetting. This bike is EFI.

Like RSL stated, without the addition of forced induction and significantly increasing the compression ratio, you won't gain anything. I'm sure the fuel pump would need to be beefed up, too.

The easy E-85 swaps with serious gains I've read about start with this basic setup: blower, high compression block, big fuel pump (Chevy Z06/ ZR1 are good example).