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  1. #1
    Senior Member t walgamuth's Avatar
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    Default Fuel available near track? I like Premium without alcohol.

    What do you think?

  2. #2
    Contributing Member TimH's Avatar
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    Pump gas almost always turns to shellac eventually. AvGas and some racing fuels leave no residue as they slowly vanish from your fuel cell while sitting many months at a time. Varnish is at least as bad for carburetors and injectors as is ethanol for other components.
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  4. #3
    Senior Member t walgamuth's Avatar
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    yes, thanks for your thoughts.,

    I am content to use the premium with no alcohol for misc. use and sitting. Whatever we burn at the track cannot hurt the engine because of the short duration. But might need some extra fuel at nationals. l am of the opinion based on what I read that the Honda will run fine on 87 ...octane but I resist that.

    ...unless someone convinces me it will produce more power.

  5. #4
    Contributing Member DanW's Avatar
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    Quote Originally Posted by t walgamuth View Post
    yes, thanks for your thoughts.,

    I am content to use the premium with no alcohol for misc. use and sitting. Whatever we burn at the track cannot hurt the engine because of the short duration. But might need some extra fuel at nationals. l am of the opinion based on what I read that the Honda will run fine on 87 ...octane but I resist that.

    ...unless someone convinces me it will produce more power.
    There are fewer btu's of heat in 91 octane than 87. 87 without ethanol will make very slightly more power as long as there's no detonation. 91 burns slightly slower to reduce the chance of detonation.
    “Racing makes heroin addiction look like a vague wish for something salty.” -Peter Egan

  6. #5
    Senior Member t walgamuth's Avatar
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    Quote Originally Posted by DanW View Post
    There are fewer btu's of heat in 91 octane than 87. 87 without ethanol will make very slightly more power as long as there's no detonation. 91 burns slightly slower to reduce the chance of detonation.
    So premium with alcohol will work best if I cannot get it without the alcohol?

    Thanks for the thoughtful answers!

    Tom

  7. #6
    Contributing Member DanW's Avatar
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    Quote Originally Posted by t walgamuth View Post
    So premium with alcohol will work best if I cannot get it without the alcohol?

    Thanks for the thoughtful answers!

    Tom
    91 octane without ethanol will have more btu's than 91 octane with ethanol. So, slightly more HP using non ethanol 91. 91 with ethanol will work, yes.
    “Racing makes heroin addiction look like a vague wish for something salty.” -Peter Egan

  8. #7
    Senior Member t walgamuth's Avatar
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    Quote Originally Posted by DanW View Post
    91 octane without ethanol will have more btu's than 91 octane with ethanol. So, slightly more HP using non ethanol 91. 91 with ethanol will work, yes.
    Thanks Dan!

    Looks like I will try to carry enough fuel to do the job from my local honey hole.

  9. #8
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    Default fuel

    There are a fair number of places here in Lincoln with non alky 91--starting with 4 blocks from home, where I fill the Westfield

    Also, there's a Casey's about a mile from the event with n/a 87

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  11. #9
    Senior Member t walgamuth's Avatar
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    Thanks very much!

  12. #10
    Contributing Member Lynn's Avatar
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  14. #11
    Senior Member t walgamuth's Avatar
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    Thanks lynn!

    Tom

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