Tohatsu 6hp power upgrade?

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

  1. May 14, 2012 #1
    owentabor1

    owentabor1 I Love microskiff.com!

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    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?
     
    owentabor1, May 14, 2012
    owentabor1, May 14, 2012
  3. May 14, 2012 #2
    noeettica

    noeettica Well-Known Member

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    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
     
    noeettica, May 14, 2012
    noeettica, May 14, 2012

  5. May 15, 2012 #3
    Brett

    Brett > PRO STAFF <

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    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... ;)
     
    Brett, May 15, 2012
    Brett, May 15, 2012
  6. May 15, 2012 #4
    owentabor1

    owentabor1 I Love microskiff.com!

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    Can I bolt a 9 hp carb on my 6hp and voila 9hp? lol
     
    owentabor1, May 15, 2012
    owentabor1, May 15, 2012
  7. May 16, 2012 #5
    Tommysmicroskiff

    Tommysmicroskiff I Love microskiff.com!

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    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

     
    Tommysmicroskiff, May 16, 2012
    Tommysmicroskiff, May 16, 2012
  8. May 16, 2012 #6
    fsae99

    fsae99 I Love microskiff.com!

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    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.
     
    fsae99, May 16, 2012
    fsae99, May 16, 2012
  9. May 17, 2012 #7
    owentabor1

    owentabor1 I Love microskiff.com!

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    Thats a shame... guess ill be buying a new Yamaha 9.9 when i get sick of the Tohatsu.
     
    owentabor1, May 17, 2012
    owentabor1, May 17, 2012
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