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  1. #1
    Join Date
    May 2006
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    Tonganoxie, Kansas
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    This is an opinion from the race engine builder that does all my machine work. Low compression engines do not do well on high octane fuel. He says that only do you spend more money but the performance is less. He is a circle track guy and he says that the engines are lazy. I imagine that it slows the burn rate down.
    ALEX WILEY

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  2. #2
    Join Date
    May 2003
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    Lagrangeville, NY
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    Sticker is on my car!
    Chris Raffaelli
    NER 24FP

  3. #3
    Join Date
    Aug 2005
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    1,717

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    Quote Originally Posted by nsuracer View Post
    This is an opinion from the race engine builder that does all my machine work. Low compression engines do not do well on high octane fuel. He says that only do you spend more money but the performance is less. He is a circle track guy and he says that the engines are lazy. I imagine that it slows the burn rate down.
    I'm curious what he considers low compression to be. Also is he talking about static compression or dynamic, where the cam and possible varible valve timeing is concerned?

    James
    STU BMW Z3 2.5liter

  4. #4
    Join Date
    Jan 2007
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    161

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    everything I have heard or read says that once you have enough octane for the compression you are running, any more and you are loosing power. The burn rate slows, which hurts power. Is this a big effect, probably not. But who wants to sign up for less power for more money.

    Mike

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