Proper Octane for 230F
  • deepcave
    Posts: 2
    Joined: Wed Apr 20, 2011 8:57 am

    Proper Octane for 230F

    by deepcave » Wed Apr 20, 2011 9:03 am

    Hey guys, I'm new here so try to take it easy on me, also sorry if this has been covered in length. I just completely rebuilt my 2005 CRF230F. I got it basically blown up and never really had any time with it. My question is I'm about to get ready for my first start up since the overhaul. I was told that I need to run 100 octane in it. Is this true and if it is what is everyones way of mixing 100 octane? Some places near me sell race fuel, however I don't believe they sell 100 octane. Only 93 octane and 110 or so.....

    any feedback would be appreciated.
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    124
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    Joined: Wed Feb 16, 2005 1:37 pm

    by 124 » Wed Apr 20, 2011 9:24 am

    No, it is not true. Do not run 100 octane in your bike.
    I would tell you to run at least 89-91 but the truth is that machine should basically run anything you could buy at the pump. It has no special requirements.

    General rule it to run the premium pump gas.
    70' Honda CT70 (Trail 70; Gold)
    06' Honda CRF50
    00' Honda XR80R
    04' KTM 50 Pro-Senior LC
    11' KX450
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    crfsonly
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    by crfsonly » Wed Apr 20, 2011 9:44 am

    welcome to the group! 124 knows his stuff!

    ken
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  • deepcave
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    Joined: Wed Apr 20, 2011 8:57 am

    by deepcave » Wed Apr 20, 2011 2:50 pm

    thanks for the quick reply 124....i'll just stick to 91 or 93 which will be much easier and cheaper.
  • leyton
    Posts: 11
    Joined: Thu Nov 18, 2010 2:49 am

    by leyton » Wed Apr 20, 2011 11:12 pm

    124 wrote:General rule it to run the premium pump gas.


    Some can also debate the higher octane 95-96 is more refined and better quality fuel. I cant prove that.. just something I heard :/

    I always run high octane at the pump unless the manufacture states otherwise.
  • Aussiecrf230
    Posts: 1399
    Joined: Fri Jan 06, 2006 11:11 pm

    by Aussiecrf230 » Thu Apr 21, 2011 5:14 am

    Using fresh fuel is just as important, as is draining the fuel bowl after washing the bike at the end of a ride day.
    Ray
    Australia

    CRF230F 2004
    C30F Power Up needle
    Mains 132
    Idle 45
    2 turns out
    Baffle out, Screens In

    It starts,it runs,it gets to where all CRFs can get to without the valve or valve plate dramas
  • staffy24
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    Joined: Wed Dec 29, 2010 3:29 am

    by staffy24 » Thu Apr 21, 2011 5:35 am

    98 is clean mostly go with that as the lesser fuels can have contaminants
    over 40 still ridin hard
    still learning
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    124
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    by 124 » Thu Apr 21, 2011 7:13 am

    leyton wrote:
    124 wrote:General rule it to run the premium pump gas.


    Some can also debate the higher octane 95-96 is more refined and better quality fuel. I cant prove that.. just something I heard :/

    I always run high octane at the pump unless the manufacture states otherwise.


    Absolutely, but if the subject machine is a stock 230, it isn't demanding (thermo-mechanically...yeah I made that word up ;) ) anything special. My XR80 runs fine on whatever old lawnmower gas I put it in... :D .

    98 is clean mostly go with that as the lesser fuels can have contaminants


    Remembering your Aussie octane ratings are calculated differently than us here in the states. not sure what 98 what be equivalently...

    What Aussie said is correct. To the OP: Worry about fresh fuel, not the octane.
    70' Honda CT70 (Trail 70; Gold)
    06' Honda CRF50
    00' Honda XR80R
    04' KTM 50 Pro-Senior LC
    11' KX450
  • wfo4ever
    Posts: 12
    Joined: Sat Nov 25, 2017 5:29 am

    Re: Proper Octane for 230F

    by wfo4ever » Fri Jul 13, 2018 9:00 am

    I have been running 90 octane Non-Ethanol gasoline with 2 oz. of Maxima octane boost added to every gallon for my 2015 Honda CRF-230F. Is anybody else running Non-Ethanol gasoline or using octane boost? What are the opinions on running race gas and what octane/brand. I can get 110 race gas where I live, it is expensive, I have used it before on some of my 2-Stroke motocross bikes. I have used straight race gas and also have used race gas mixed 50/50 with the 90 octane Non-Ethanol gasoline for my 2-Strokers. I found it was cheaper to just use Maxima Octane Boost for trail riding and race gas for the motocross tracks. The Honda CRF-230F is a very fun and reliable motorcycle for what it is intended for and this forum has some great information and members.
  • Aussiecrf230
    Posts: 1399
    Joined: Fri Jan 06, 2006 11:11 pm

    Re: Proper Octane for 230F

    by Aussiecrf230 » Fri Jul 13, 2018 3:24 pm

    I think the non-ethanol part to be more important than boosting it above 90 MON octane rating if your engine is at stock compression. Ethanol fuels are ok and are generally a higher octane but we would need to clean out the fuel system after use. It attracts moisture which does horrible thing inside carbys and fuel strainers. I have used higher octane fuel in the past but for more a back up fuel supply for others I rode with.
    That said even quality pump fuel leaves deposits which is why we all should drain carbys and tanks if we leave it a month or more.
    Ray
    Australia

    CRF230F 2004
    C30F Power Up needle
    Mains 132
    Idle 45
    2 turns out
    Baffle out, Screens In

    It starts,it runs,it gets to where all CRFs can get to without the valve or valve plate dramas

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