how to tell year of my Dyne and what kind of weight can i repower the 115 Johnson

Discussion in 'Restoration Projects & Questions' started by Pat Colvin, Nov 13, 2018.


how to tell the year of hull and what kind of upgrade power and weight limit of new power

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  1. Pat Colvin

    Pat Colvin Hydrodyner

    Sep 20, 2016
    Boat Model and Year:
    it is a Hydrodyne but not sure what year just boug
  2. RiverRat

    RiverRat Hydrodyne 18 Specialist

    Sep 30, 2006
    Shoreview, MN
    Boat Model and Year:
    1971 Baby Dyne
    Ski Team:
    Twin Cities River Rats
    I am not great with the years on these, but there may be a hull identification number somewhere on the boat that should help with that. Usually on the rear of the transom, sometimes on the side near the rear or inside near the rear.

    It is probably old enough to not have a capacity plate. If it does, it probably says around 135 hp max. As long as the hull is structurally sound, these boats have handled modern 200+ engines and older twin 115's+. So, it is up to you to decide what you want out of the boat.

    I see no pylon. Is there a bracket piece that I see on the front side of the splashwell and the rear corners of the transom?
  3. tj309

    tj309 Composite Specialist

    Jul 19, 2010
    LA (lower Alabama)
    Boat Model and Year:
    1972 18' Hydrodyne
    Ski Team:
    Former Hodag Water shows
    Your boat looks identical to my '72. My boat does not have a HIN or a capacity plate. This should at least help you narrow down the years.

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