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Does Anyone Know The Average MPG of an F-134 ??

Discussion in 'Early CJ5 and CJ6 Tech' started by dishwolf359, Sep 5, 2005.

  1. Sep 5, 2005
    dishwolf359

    dishwolf359 Full Time Bum

    Burnsville NC
    Joined:
    Jul 31, 2005
    Messages:
    43
    I was wondering if anyone knows what the average MPG is for an F-134 with the Carter YF ?? Mine's a 1966 CJ-5...thanks.
     
    dishwolf359, Sep 5, 2005
    #1
  2. Sep 6, 2005
    Hill

    Hill Member

    Colorado
    Joined:
    Mar 7, 2004
    Messages:
    142
    Too many variables. Axle ratio, overdrive?, condition of engine, carb settings, ign timing, size of tires, etc.

    Jeeps are not heavy so it doesn't take a whole lot to get it down the road. but the low gears tend to mess that up a bit.

    I have only driven a 4 cyl once, and my jeep has V6 I have no clue. On top of that I have never actually checked the mileage of my rig! Maybe I aught to do that... someday.
     
    Hill, Sep 6, 2005
    #2
  3. Sep 6, 2005
    Glenn

    Glenn Kinda grumpy old man Staff Member

    Apopka, Fl
    Joined:
    Sep 21, 2002
    Messages:
    12,384
    It's really hard to pinpoint an average, but you should get at least 15. I've gotten almost 20 with the YF, but that was with a new carb. It's really tough to keep the YF adjusted just right though.
     
    Glenn, Sep 6, 2005
    #3
  4. Sep 6, 2005
    panzer

    panzer Super Mod Staff Member

    Columbus, OH
    Joined:
    Dec 9, 2003
    Messages:
    1,245
    I was getting 15/mpg w/ no lockout front hubs and 12" wide tires. Now I
    have 10.5x 31's and lockout hubs and get 16.5/mpg. That's w/ a newer
    Solex.
     
    panzer, Sep 6, 2005
    #4
  5. Sep 6, 2005
    Hawk62cj5

    Hawk62cj5 Captain of OldSchool

    Brodnax Va.
    Joined:
    Oct 28, 2004
    Messages:
    694
    At 30 mph I figure close to 20 mpg , at 55 around 10 mpg , so it varies alot.
     
    Hawk62cj5, Sep 6, 2005
    #5
  6. Sep 6, 2005
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
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    23,596
    Low power:weight ratio and lack of aerodynamics will make mpg very speed sensitive (or so I'd expect).
     
    timgr, Sep 6, 2005
    #6
  7. Sep 6, 2005
    Hawk62cj5

    Hawk62cj5 Captain of OldSchool

    Brodnax Va.
    Joined:
    Oct 28, 2004
    Messages:
    694
    Some one had a chart from the 50s or 60s that jeep did , it looked very honest. I might have it saved some where ,looking
     
    Hawk62cj5, Sep 6, 2005
    #7
  8. Sep 6, 2005
    65CJ5

    65CJ5 Member

    Albuquerque
    Joined:
    Sep 22, 2002
    Messages:
    156
    With the original YF 14 to 16 (mostly 14). With the Solex 17 to 18. That's with 31" tires, 4.88 gears, and new ignition components including the Pertronix. Normal driving, mostly city with some highway.

    Stan
     
    65CJ5, Sep 6, 2005
    #8
  9. Sep 6, 2005
    dishwolf359

    dishwolf359 Full Time Bum

    Burnsville NC
    Joined:
    Jul 31, 2005
    Messages:
    43
    I think my axles are 5.38...not positive.
     
    dishwolf359, Sep 6, 2005
    #9
  10. Sep 6, 2005
    gscj5

    gscj5 H2 Recovery Team

    Kettering, Ohio
    Joined:
    Sep 22, 2002
    Messages:
    339
    Does fiberglass get better.... R)
     
    gscj5, Sep 6, 2005
    #10
  11. Sep 6, 2005
    vanguard

    vanguard

    Yep. But you have to be going downhill, in a mineshaft with a tailwind! R) R) R)
     
    vanguard, Sep 6, 2005
    #11
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