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Thread: 1997 Seasport repower

  1. #1
    Member bkbaker's Avatar
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    Default 1997 Seasport repower

    My brother and I took the winter to repower or 24 XL Seasport from 454 inboard to a 300 hp Suzuki outboard. It was a labor of love that gave up a new top speed of 40 knts, dropped 500 lbs and increased our fuel efficiency. The loss of the inboard has changed the center of gravity and made the boat quicker on the roll. She cruises at 28 knts burning 12 GPH. Can't wait to get deep in the Sound this summer. See u guys out there.


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  2. #2
    Moderator bkmail's Avatar
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    How aesome is that?!
    Looks great and hauls ass with less fuel, usable deck space, easier to work on, swim step space, etc....
    Nice job!!!
    Bk

  3. #3

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    Nice looking job!

  4. #4
    Sponsor potbuilder's Avatar
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    nice work !! Did you decore the transom where the bolts for the bracket went through ?? I'm guessing the transom was cored with plywood? Mount the bilge pump on a piece of aluminum to keep it flat. A project like that has been bouncing around my head for awhile.

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  5. #5
    Member bkbaker's Avatar
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    Default 1997 Seasport repower

    Not sure what u mean by "decore". The transom was double layer of plywood. The hull was only single layer. I was surprised when we put in a thru hull transducer that the hull was only one ply.


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  6. #6
    Sponsor potbuilder's Avatar
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    decoring is hollowing out the core(plywood) with oversized holes and then filling with hull & deck putty and redrilling the holes so your bolt holes go through solid glass instead of plywood so if water seeps through it doesn't soak the core and then causes the rest of the transom to delaminate and rot. Your hull has a plywood core ??

    lots of good info here
    http://www.pbase.com/mainecruising/boat_projects


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  7. #7
    Member bkbaker's Avatar
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    We did drill and treat the holes with marine sealant to keep the wood dry.

    The hull is a fiberglass sandwich with plywood. I was surprised it wasn't thicker


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  8. #8
    Member Deak's Avatar
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    That looks great!!! How much time does a project like that take to complete?

  9. #9
    Sponsor potbuilder's Avatar
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    decored for rod holder, they used epoxy, he's what they guy posted
    "I had good luck with six-10 by west system. I used 2" Blue tape as a backer. It fills well and doesn't sag. One tube did 4 rod holders (all decored back a 1/2'') , 2 fuel fills and have a little left in the tube for a small fill job. Dripless glue gun, mixing nozzle, and a nail head to plunge the product against the coring."


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  10. #10
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    Looks good. I'll be posting pics of mine soon. Just ordered the bracket yesterday.
    Do I give my friends advice? Jesus, no. They wouldn't take advice from me. Nobody should take advice from me. I haven't got a clue about anything..

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