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Latest post Wed, Dec 20 2017 12:06 PM by sfranta. 3 replies.
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  • Sat, Dec 16 2017 5:22 PM

    S & S Super E Shorty on the 83 ironhead Sportster XLX1000

    THE FORGOTTEN SPORTSTERS- 79-83

    Does anybody have a take on what range of main jet to use at sea level [granted,...sometimes we're actually underwater] i'M ABOUT TO REBUILD A CARB  with little actual road wear, but had been stored for years....runs but backfires like a motherflicker]

    Tanks

    BeastieBoy

  • Sun, Dec 17 2017 6:06 AM In reply to

    • FX
    • Top 10 Contributor
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    • Joined on Sun, Mar 12 2006
    • Tonawanda NY
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    Re: S & S Super E Shorty on the 83 ironhead Sportster XLX1000

    Greg, there is no set rule for jetting, all bikes are different. You have to 'read the plugs'. Sounds like it's running lean. Look at the spark plugs, if snow white, go up a size at a time with the mid jet [only]. You want the plugs to have a light gray/light tan look. The opposit if it's running too rich, and the plugs have a black look. Powder black is fuel fouling, gloss black is oil fouled, you would go down a size at a time...

    FX

    Don't force it, get a bigger hammer.

  • Wed, Dec 20 2017 11:16 AM In reply to

    Re: S & S Super E Shorty on the 83 ironhead Sportster XLX1000

     the S&S instruction sheet has jetting ranges for various displacements, see the instruction sheet here

    https://www.sscycle.com/docs/default-source/instruction-sheets/510-0251_super_eg_series_shorty_carbs-(1).pdf?sfvrsn=4

     

  • Wed, Dec 20 2017 12:06 PM In reply to

    Re: S & S Super E Shorty on the 83 ironhead Sportster XLX1000

     almost forgot, since you live near sea level, start on the richer side of the recommended range. if you were at high altitude, you'd lean it out

     

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