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  1. #1

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    Jan 2011
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    Boat ??? Long shaft replacing with short shaft

    Hey guy I need some help I'm repowering my boat the current motor is a 25 " shaft the motor I'm getting is a 20 " shaft they do make an add on spacer kit to make it a 25 shaft do u guys thing I could run it with a 20 shaft I measured and the prop will def be below the hull any help would be great thanks


  2. #2
    jet ski o'clock's Avatar
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    Jan 2009
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    bayville n.j.
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    if the prop is too close to the transom of the boat it could cavitate and actually cause cooling and prop burn problems.if the boat came with a long shaft motor it must be replaced with the same unless you are planning to do a motor bracket on the boat.

  3. #3

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    Jan 2011
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    Ok that's what I thought they do make a 5" spacer kit to make it a 25 in shaft I'm get in the motor for $2500 with new controls the motor has less the 300 hours cause it sat in mechanic lean 7 years before he bought it

  4. #4
    jet ski o'clock's Avatar
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    what make h.p is it?

  5. #5
    jet ski o'clock's Avatar
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    also if you are going from 2 stroke to 4 stroke the props are different and the boat will also respond differently to the heavier motor.in some cases trim tabs will have to be added for control of the extra weight to attain faster planning.

  6. #6

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    Jan 2011
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    Amityville, New York, United States
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    It's a 2000 225 ocean pro not four stroke the motor is about 60 lbs heavier then the 150 I had on it my boat is rated for a 200 but the 225 is the same weight just bigger bore

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