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Thread: Alpha 1 Trim Cylinders (two sizes)??

  1. #1
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    Alpha 1 Trim Cylinders (two sizes)??

    Who knew that Merc made two sizes of trim cylinders 15 9/16 and 16 3/16 for a A-1. I have been running a Alpha SS for some time and noticed drive could use more negative trim out of the hole.. Measured cylinder, was the longer one, 16 3/16. Question, what trim cylinder size did Merc use from the factory for the SS?

    When I installed the shorter drive for the old A1, never entered my mind there were two sizes of cylinders. Searched the net but to no avail. Anybody?

  2. #2
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    I wasn't aware of that either, but did you know SEI offers both
    lengths for $120.00 each?

    http://www.sterndrive.cc/Mercruiser-...Cylinders.html
    George Carter
    Central Florida
    gcarter763@aol.com
    http://kineticocentralfl.com/


    “If you have to argue your science by using fraud, your science is not valid"
    Professor Ian Plimer, Adilaide and Melbourne Universities

  3. #3
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    Thanks for the search GC. Darn good price and will think about purchase. Do you think the SS is shorter width wise vs a Alpha1?

    Also want to add 1988 18C.

  4. #4
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    I believe I read it's the same.
    George Carter
    Central Florida
    gcarter763@aol.com
    http://kineticocentralfl.com/


    “If you have to argue your science by using fraud, your science is not valid"
    Professor Ian Plimer, Adilaide and Melbourne Universities

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