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Old March 13th, 2018, 04:42 AM   #1
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E85 ?

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.
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Old March 13th, 2018, 05:55 AM   #2
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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.
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Old March 13th, 2018, 07:30 AM   #3
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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.
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Old March 13th, 2018, 11:40 AM   #4
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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.
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Old March 13th, 2018, 02:17 PM   #5
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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.
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Old March 13th, 2018, 03:59 PM   #6
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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.
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Old March 13th, 2018, 04:26 PM   #7
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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.
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Old March 13th, 2018, 04:37 PM   #8
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Maybe the fuel tank could take ethanol above 10%?



LINK: Neutralize ethanol-plastic effect? | Adventure Rider
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Old March 13th, 2018, 04:46 PM   #9
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LINK: http://advrider.com/index.php?thread...-worse.929823/
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Old March 13th, 2018, 04:53 PM   #10
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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 35f. 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.
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