Converting 9.9 to 15 hp

Discussion in 'Bubba's Outboards' started by cats gone wild, Oct 18, 2006.

  1. cats gone wild

    cats gone wild Member

    Messages:
    452
    State:
    canal winchester, ohio
    I bought my first boat last year. A 1993 14ft. deep v with a 9.9 Johnson. I have heard that the only difference between a 9.9 and a 15 hp is the carberator. I would like to change it to get a little more hp. What I want to know is, how difficult is this? And is it worth doing to gain 5 hp. Any feedback would be greatly appreciated. Thanks! Cats....
     
  2. Bubbakat

    Bubbakat New Member

    Messages:
    4,532
    State:
    McMinnvill
    Post a model number or the year and make and lets see what we are dealing with here.
     

  3. cats gone wild

    cats gone wild Member

    Messages:
    452
    State:
    canal winchester, ohio
    Bubbakat, my motor is a 1993 Johnson short shaft, tiller control, manual start.
     
  4. Bobpaul

    Bobpaul New Member

    Messages:
    3,039
    State:
    Supply NC
    Ya still need a model number to match things up.
     
  5. Bubbakat

    Bubbakat New Member

    Messages:
    4,532
    State:
    McMinnvill
  6. Bobpaul

    Bobpaul New Member

    Messages:
    3,039
    State:
    Supply NC
    Bubba, that was like going back to school. Great site!
     
  7. Bubbakat

    Bubbakat New Member

    Messages:
    4,532
    State:
    McMinnvill
    Thanks Bob every once in a blue moon you run upon something that is laied out so even I can understand it. :lol: :lol:
     
  8. cats gone wild

    cats gone wild Member

    Messages:
    452
    State:
    canal winchester, ohio
    The model # is J10RETM serial # G03257999
    Thank You Sirs...
     
  9. JAYNC

    JAYNC New Member

    Messages:
    1,312
    State:
    Newport N.C.
    My uncle did that to my grandmothers 9.9 evinrude, took the stock carb off and put the 15hp carb on. It ran great and had a lot more power for a while, then it blew up. Not sure if it was because it was an old engine, or it was because my uncle just breaks stuff, and maybe had it too lean. Just thought I would let you know.