8hp + 4m boat

Discussion in 'Outboards' started by Saqa, Oct 25, 2013.

  1. Saqa
    Joined: Oct 2013
    Posts: 681
    Likes: 18, Points: 18, Legacy Rep: 75
    Location: Hervey Bay

    Saqa Senior Member

    Hi all
    I am making this boat at the moment

    I have an 8hp 1990 Mariner 2 stroke long shaft outboard. Would love to hear some tips about getting the most from the combo in regards to getting the boat on the plane with one passenger on board

    I checked and the pistons and crankshaft and they appear to be the same part numbers as the 9.9hp. Has anyone done an upgrade on the 8?

    Will adding wings to the cav plate help?

    Do I even need to worry?

    Thing is the boat is in Fiji and I am going to Australia for a few days so if I can buys upgrades while there
  2. michael pierzga
    Joined: Dec 2008
    Posts: 4,862
    Likes: 115, Points: 0, Legacy Rep: 1180
    Location: spain

    michael pierzga Senior Member

    Keep the boat lightweight and weight centered. Long tiller extension...gas tank amidships or forward.

    A heavy stern will drag your speed down

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