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89 octane ok for b16?

Discussion in 'General Tech and Maintenance' started by BigBoy, Sep 20, 2005.

  1. BigBoy

    BigBoy Senior Member

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    bolt ons and cams, 11:1 compression. Accidentally filled up with 89 today. Should i be worried about anything?
     
  2. confusatron

    confusatron Senior Member

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    It's okay for a stock B16. I can testify to that. But with all those mods and higher compression, I don't know.
     
  3. drpenguin

    drpenguin Senior Member

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    I dont know. just swapped in i couldnt run anything but premium. thats 93 here in oregon. atleast where i go it is. Anythign less and its knocks sputters back fires and the whole schabang
     
  4. BigBoy

    BigBoy Senior Member

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    well the best we get in cali is 91. So far i havent taken it past 4K and everything seems fine.
     
  5. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    If you're worried, you could always drain the tank (plug in the bottom) and fill it back up with 91/93.
     
  6. drpenguin

    drpenguin Senior Member

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    Ah take it to 8 grand you pussy you know you want to
     
  7. BigBoy

    BigBoy Senior Member

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    yes very tempting...im just gonna drive around town tonite to empty the gas. I heard draining the plug is not a good idea cause its sometimes hard to plug back in.
     
  8. confusatron

    confusatron Senior Member

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    I ran my B16A on 87 octane for about 2 weeks, and had no problems whatsoever. Ran great, good power. When I switched to 93 I thought I noticed a slight difference in power, but nothing like night and day or anything.
     
  9. nitrous_bob

    nitrous_bob Junior Member

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    i sprayed 100 shot on 89 octane and 12* timing on a stock mustang 'vert

    no problems at all.....you can and should try to use lower octane when your able to....like when it's cooler out.

    you make more power as long as your not pinging
     
  10. cycloneb18c3

    cycloneb18c3 Senior Member

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    I ran 87 in my B16 all the time. I never had it ping or anything. I ran 94 from sunoco and I didnt notice a differnce at all-so screw paying 30 cents more a gallon...ill continue running 87
     
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