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  1. #1
    o0 RASTA 0o's Avatar
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    Octane & Performance

    I have an 1100 raider, which I am looking to get upgraded, however, the gas down here is not very consistent. We get 95 RON and 87 or 89 MON give or take 1 level.

    I do not and cannot afford to be burning pistons or anything of that sort once I get my engine back.

    (1) What suggestions do you suggest when dealing with this Octane level?

    (2) What modifications do you guys suggest for increased performance, but reliability? Looking for at least 65 mph.

    (3) What effects will an Octane booster have, and will it be effective in increasing the Octane level to sufficiently keep the engine reliable?


  2. #2
    krispaintballz's Avatar
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    Here are two charts that you need to follow. One is the octane chart of most of the available race gas and a mixing chart. This will alllow you to mix gas to get the appropriate octane value.


    http://www.btinternet.com/~madmole/R...RONMONPON.html
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  3. #3
    Goliath's Avatar
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    The higher the octane, the less performance you will get. That being said, it also provides piece of mind when you are talking about detonation.

    I personally use middle grade (89). My owner's manual (2000 GP1200R) says to use 87, but with all of the ethanol in the fuel now adays, I don't trust it.

  4. #4
    o0 RASTA 0o's Avatar
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    Thanks alot for the info. Very helpful. However, I could not open those two charts....Is it possible for you to paste them on the forum under this discussion.

    Appreciate it.

  5. #5
    Flying Scotsman's Avatar
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    Quote Originally Posted by Goliath View Post
    The higher the octane, the less performance you will get. That being said, it also provides piece of mind when you are talking about detonation.

    I personally use middle grade (89). My owner's manual (2000 GP1200R) says to use 87, but with all of the ethanol in the fuel now adays, I don't trust it.
    You can run a GP1200 with a 150 psi head 65 mph on 89 octane if you up the octane a little it helps cool the motor and prevent detonation.
    This you tube video is on 89 octane gas.

    [/URL]

    It ran 65.5 that day next trip I ran a 66.2 mph run.
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  6. #6
    Old Ski Insanity w/rpm500's Avatar
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    Rasta if you deside on having tim judge build your ski he can build it for what fuels you have available down there..

    there is alot of good reading for you to do to help deside what you want done.. i'd read thru group k's site , as they have alot of info on your and our old school skis.. i would also direct you to find pistonwashes gp bible.. this won't be RAIDER stuff ,but it will pertain to your skis basic 'like' set up, especially in engine configuration and help you to understand steps and setup which are closely alike!!!..

  7. #7
    krispaintballz's Avatar
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    Here is the chart but the mixing chart you need microsoft excel to run it. It is a program like. You have to enter numbers. You might just have an older version of microsoft let me make a older copy to see if you can open it.
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  8. #8
    Here come the smokers! OBXJeepGuy's Avatar
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    Here is another...
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  9. #9
    Flying Scotsman's Avatar
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    Or you can use a calculator or a notepad.
    3 gallons x 100 octane = 300
    6 gallons x 93 octane = 558

    558 + 300 = 858

    858 divided by 9 gallons = 95.333 octane

  10. #10

    Octane

    Thanks for the help.

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