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gas mileage

Discussion in 'XJ Technical Chat' started by flashsnapshot, Apr 3, 2007.

  1. SQLGuy

    SQLGuy Well-Known Member

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    On a 250 mile high-altitude run I took last week, I was getting 47.5mpg (that's averaging about 60mph and with a lot of up and down in the Rockies). But, she was actually running too rich up at 8,000 to 11,000 feet. I've adjusted the altitude correction now and will probably make another run tomorrow to see if things have improved.
     
  2. CNCguy

    CNCguy Member

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    '82 XJ650... stock except for a 4-1. Over the last 1800 miles, have averaged 53.1 MPG. Lowest was 48.8, highest was 56.2. I regularly wind her to 7-8K. I am pleased!
     
  3. bigfitz52

    bigfitz52 Well-Known Member Premium Member

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    The 46T results in LOWER gearing; a little bit more "oomph" off the line, but higher revs at highway speed. The 45T ("taller") would give you even better mileage yet I'd bet.

    Anything over 50mpg is gravy to me; especially with a vehicle as much fun as the XJ550R.
     
  4. RiderXJ

    RiderXJ Member

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    My 1100 only gets about 41mpg. I've only ran about 2 tanks but I have also used some of both tanks to adjust and readjust the carbs. So I really can't get a true mpg yet. Not really worried about mileage anyway. I don't ride it to work just for pleasure.
     

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