Spark plugs and E85 - Page 2

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  1. #16
    Senior Member Array jumperjack's Avatar
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    I just had my car tuned at SGS by Dave Guy and per his recommendation I used Autolite 103 gapped at .028 or less. I gapped mine around .027 and had no issues at the dyno. I haven't had a chance to drive it much yet but seems good.

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  3. #17

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    AR103's (.025gap) for me, I had ar94's in there but they start to slightly missfire after 2K miles. 850rwhp 25psi, E85,8.5cr,4v daily driver.

  4. #18
    Premium Member Array FireFighterHill's Avatar
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    wont cold plugs and cold fuel lead to fouling because the plug doesnt get hot enough to burn of deposits. This might not be a problem with the properties of E85 being as it cleans out sludge on its own.

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  6. #19
    Senior Member Array s8v4ovic's Avatar
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    A trend that I see is *most* factory flex fuel vehicles run Iridium plugs for a longer service life..........

  7. #20
    05 BOSS 302 Array 05yellowGT's Avatar
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    I think its just as easy to foul plugs with E85 as it is with gasoline.

  8. #21
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    Quote Originally Posted by 05yellowGT View Post
    I think its just as easy to foul plugs with E85 as it is with gasoline.
    This seems to be true.

  9. #22
    Senior Member Array jumperjack's Avatar
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    Does anyone have pics of their plugs after running on the E85. I pulled one out of mine and couldn't see the timing mark on the strap. I will try to pull them and get some pics up.

  10. #23
    Senior Member Array 04sleeper's Avatar
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    BR7EF's here gapped @ .026 right out of the box. (I always check them to be sure)

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