mating a Yanmar to a mercruiser outdrive

by Richard Van
(Fort Erie ON canada)

Hi my name is Richard , I have a 1987 Royal Sea 23 .It is a down east lobster boat with extended pilot house . I want to change out the 4.3 merc for a Yanmar 3jh3e . I already have the motor and all controls .I have two questions .does any one make a coupling that mates this motor out drive combo?Second, motor came with the trans ,would you leave this on and lock it in gear ?It would be a double gear reduction I be leave .Could this be corrected by the right prop? I realize the boat will be a lot slower . I am going to outfit it for long canal trips Thanks Richard

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