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Thread: Why the aversion to E85?

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  1. #1
    Join Date
    May 2007
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    184

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    If allowed to run E85, will class rules allow for 50% larger fuel injectors to handle the extra needed volume?

    Locally, here in Cincinnati OH, E85 is only a dime cheaper than 87. So 30 cents a gallon cheaper than 93 octane, but you use 25-30% more on the street. I was looking at it for the street motor I'm building, 13.7:1 compression D15 nonVTEC for the street and strip.



    I've seen a electric tool for measuring and testing, easier and more accurate than a hydrometer.

    How about making your own race fuel? Last time I checked the federal permit was only $100 and some "consumption" was allowed.
    BoneSpec Transmissions
    Honda D-series tranny specialist

  2. #2
    Join Date
    Jan 2008
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    Deltona, FL
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    Quote Originally Posted by bonespec View Post
    If allowed to run E85, will class rules allow for 50% larger fuel injectors to handle the extra needed volume?
    This is definitely a sticky subject. The increased volume of fuel required would mandate, at minimum, the capability to tune FI, and in most cases larger injectors. Most carburetors should be able to re-jet for it. Another disadvantage over pump gas is the amount of energy per mass of ethonal vs. pump gas. Here is a good comparison: Ethanol Properties

    The reason you can use E85 in most modern cars is that they have compensation tables based on calculated ethanol percentage. Some of the oem's (Ford in particular) have been supporting Ethanol for a while.

    Is it worth perusing, yes I think it is, the image of racing is important. Will it be feasible for all club members racing, not sure. I will be giving it a try once I can tune just to play with it.
    Last edited by Duc; 08-04-2009 at 07:17 AM.
    Derek
    #76 ITR Toyota Celica GTS

  3. #3
    Join Date
    Jan 2009
    Location
    Athens GA
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    The funny thing is in this world of ours is that image is half the battle...

    Maybe this is the battle you should be fighting, trying to get people to focus on facts instead of fancy.

    Accommodating fools has a history of not ending well.

  4. #4
    Join Date
    May 2008
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    CT/NY/NJ
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    and the batteries in a Hybrid take more resources to manufacture and transport than they will ever save. That fact doesn't seem to be hurting their sales... or their image.


    bring the E85!
    Chris Rallo "the kid"
    -- "wrenching and racing" -- "will race for food!" -- "Onward and Upward"

  5. #5
    Join Date
    Jan 2001
    Location
    Buffalo, New York
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    2,942

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    E85 also requires that the entire fuel system (seals, gaskets, hoses, etc.) be compatible with the alcohol.

    Don't think it would work well with my Carburettor. Could melt the float.

  6. #6
    Join Date
    Jul 2009
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    Northern Virginia
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    +1. Chaning all the seals is the big problem I see.
    John
    1985 RX-7 SR20DET (stock)

  7. #7
    Join Date
    Jul 2009
    Posts
    21

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    the injectors I can totally understand. That makes sense.

    hmm as for seals, I know we arnt talking about OLD cars here...but I have done several "E85 conversions" if you will to 1983 Volvo's...my 1989 station wagon has the same fuel system though, we've been running it now for 3.5 years on E85 on the stock fuel system and seals.

    No leaks yet

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