Tohatsu 6hp power upgrade?

Discussion in 'Outboard Maintenance' started by owentabor1, May 14, 2012.

  1. owentabor1

    owentabor1 I Love!

    Is it possible to get any extra power out of a 2008 Tohatsu 6hp 4 stroke?

    I have read that some guys swap parts on their motors with the bigger motors and get good results..

    Can this be done with the Tohatsu?
  2. noeettica

    noeettica Well-Known Member

    Not too much you could get up to 15 % but not worth it

    get a tach and make sure you are turning full rpm's

  3. Brett

    Brett > PRO STAFF <

    4, 5, 6 are all the same engine.
    The difference is the carbs.
    bolt the 6 hp carb on the 4 hp engine and viola you created another 6.

    Yes I know, a viola is a string instrument... ;)
  4. owentabor1

    owentabor1 I Love!

    Can I bolt a 9 hp carb on my 6hp and voila 9hp? lol
  5. Tommysmicroskiff

    Tommysmicroskiff I Love!

    No Sir

    I used to do stuff like this all the time , not worth it

    1.bore it over sized
    2.bigger valves
    3.get the cam reground
    4.stiffer valve springs
    5.bigger carb

    then dial in the prop with a prop shop

    you might see 8 hp

    again NOT WORTH IT ...

    just get a 9.8 2 stroke

  6. fsae99

    fsae99 I Love!

    For normally aspirated engines there is no replacement for displacement.

    If you could add turbo or super charger and modify engine mapping and run more exotic fuel you could get 20 hp out of it.
  7. owentabor1

    owentabor1 I Love!

    Thats a shame... guess ill be buying a new Yamaha 9.9 when i get sick of the Tohatsu.
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