Getting ready to do some motor work and the question has come up about race or pump gas. race gas in san diego is about $10 bucks a gallon. e85 witch is 111 octane is 3.59 a gallon and my buddy is running it in his buggy and runs well, But Havent heard of anyone doing it in a carb set up.. What are your thought and suggestions?
joshuabuilt
E85?
Do you know what he had to do to the carb? I dont even know if E85 will mix with oil or not! Havent tried it yet
Its a great fuel for 4 stroke motors, if you're building a chevy motor with the right heads and timing, its an excellent combo if you not concerned with mpg. Haven't heard anything good for two strokes tho...mixing oil and such..there's a thread on this site that addresses this, I've was told to keep pure gas(no 10% ethanol mix) or pure alcohol.
to run E85 set the motor up similar to an alcohol motor.
so up the compression beyond pump gas ratios,
it will need 30% more fuel so you may have to put powerjets into your carb to make up for it
and it can take more timing.
so up the compression beyond pump gas ratios,
it will need 30% more fuel so you may have to put powerjets into your carb to make up for it
and it can take more timing.
He's running a mikuni carb not sure why his builder picked that carb he had to drill a few things out so it would flow more. a tank of fuel doesnt last very long in that bike i think its a 44mm carb to
i ran e85 in my old drag yfz as well as alcohol,pretty much the same carb settings.i used on of esr's alcohol kits and tuned from there
E85 is a lot lower than what folks think. The tags at the station if it has them is wrong. It is around 94-96 OCT.
E85 has an octane rating higher than that of regular gasoline's typical rating of 87, or premium gasoline's 91-93. This allows it to be used in higher-compression engines, which tend to produce more power per unit of displacement than their gasoline counterparts. The Renewable Fuels Foundation states in its Changes in Gasoline IV manual, "There is no requirement to post octane on an E85 dispenser. If a retailer chooses to post octane, they should be aware that the often cited 105 octane is incorrect. This number was derived by using ethanol’s blending octane value in gasoline. This is not the proper way to calculate the octane of E85. Ethanol’s true octane value should be used to calculate E85’s octane value. This results in an octane range of 94-96 (R+M)/2. These calculations have been confirmed by actual-octane engine tests."[SUP]http://en.wikipedia.org/wiki/E85#cite_note-17[/SUP]
Examples of this mis-citation can be found at the Iowa Renewable Fuels Association titled "E85 Facts"[SUP] [/SUP]which cites a range of 100-105, and a document at the Texas State Energy Conservation Office titled "Ethanol"[SUP]http://en.wikipedia.org/wiki/E85#cite_note-19[/SUP], which cites a 113 rating.
E85 has an octane rating higher than that of regular gasoline's typical rating of 87, or premium gasoline's 91-93. This allows it to be used in higher-compression engines, which tend to produce more power per unit of displacement than their gasoline counterparts. The Renewable Fuels Foundation states in its Changes in Gasoline IV manual, "There is no requirement to post octane on an E85 dispenser. If a retailer chooses to post octane, they should be aware that the often cited 105 octane is incorrect. This number was derived by using ethanol’s blending octane value in gasoline. This is not the proper way to calculate the octane of E85. Ethanol’s true octane value should be used to calculate E85’s octane value. This results in an octane range of 94-96 (R+M)/2. These calculations have been confirmed by actual-octane engine tests."[SUP]http://en.wikipedia.org/wiki/E85#cite_note-17[/SUP]
Examples of this mis-citation can be found at the Iowa Renewable Fuels Association titled "E85 Facts"[SUP] [/SUP]which cites a range of 100-105, and a document at the Texas State Energy Conservation Office titled "Ethanol"[SUP]http://en.wikipedia.org/wiki/E85#cite_note-19[/SUP], which cites a 113 rating.
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