Which one should I buy

Discussion in 'Jet Drives' started by Michael Wise, May 21, 2022.

  1. Michael Wise
    Joined: May 2022
    Posts: 1
    Likes: 0, Points: 1
    Location: Jack, Al.

    Michael Wise New Member

    I have 14/36 jon boat. Has a 15 inch transom. Going to buy a 25 hp Mercury jet drive for it. Manuf. list 15 and 20 inch shafts. After talking with two different dealers and both telling me I need the 20 inch shaft I am confused. Shouldn't I just buy the 15 inch shaft.
     
  2. ondarvr
    Joined: Dec 2005
    Posts: 2,929
    Likes: 573, Points: 113, Legacy Rep: 506
    Location: Monroe WA

    ondarvr Senior Member

    Outboard jets need to sit higher on the transom, so the transoms are normally 5" taller for a jet. 20" jet needs a 25" transom. 15" jet uses a 20" transom.

    You can buy or make a riser for the transom if needed.
     
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