Conversion

Discussion in 'Bubba's Outboards' started by BigDuck, Dec 18, 2006.

  1. BigDuck

    BigDuck New Member

    Messages:
    71
    State:
    Trumann, Arkans
    Has anyone ever tried to increase the hp of a 25hp nissian to 30 hp by removing the restrictor plate behind the carb?
     
  2. richard dunbar

    richard dunbar New Member

    Messages:
    550
    State:
    Washington
    What did he just say :lol:
     

  3. Mickey

    Mickey New Member Supporting Member

    Messages:
    14,592
    State:
    Illinois
    I can't help you . You lost me when you asked the question. I'm sure someone on here understands and will give you a good answer.:lol:
     
  4. Bubbakat

    Bubbakat New Member

    Messages:
    4,532
    State:
    McMinnvill
    I have never done what you are asking here Jan but what little knowledge I have of these motors I would say if you did this you would have to change the jet size in the carbs and also tune the exhaust to compesate for the extra pressure relief.

    I have taken an OMC and put boyseen <(spelling) reeds in them and made a considerable difference in the out put.
     
  5. BigDuck

    BigDuck New Member

    Messages:
    71
    State:
    Trumann, Arkans
    Thanks for trying guys, a guy around here said he reamed out the plastic restrictor plate (it was a half moon instead of a full circle) and shortened his exaust???? that part got me, i've seen the plate behind the carb., it wouldn't take much to rework it but the exaust is a different story, o well i'll keep searching.