Reply To: Converting Yamaha 6hp 677 model to 8 hp

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July 7, 2021 at 3:25 am #242131
Gore194
Participant

    8hp outboard use same propeller and I belive that the boat speed can not be the same.
    Ther are somthing that restricts the engine to reach proper power, after I made parts changes.
    That’s what I am trying to find