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2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

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  • 2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

    Been running a 2006 4-stroke EFI 25 horse merc for a while which I understand is made by Tohatsu or Nissan, and would like to know if it can be converted to a 30 hp easily.

    Any info would be appreciated.


  • #2
    Re: 2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

    About $1100.00 to convert it...I wouldn't do it.
    Elvin
    My answers are like Zen...It may not be the answer you want, but it is generally the answer you need.

    The 3 Rules:

    1) Look in your service manual first...Then ask me if it is correct.
    2) Understand that your desire to repair your engine does not mean that you have the ability to do so.
    3) If you are confused, take your engine into a dealer..Then let them be confused...At least, in theory, they sent someone to outboard 101.

    Comment



    • #3
      Re: 2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

      Ouch. Definately not worth it, even at half that cost.

      Why so much? Is there a lot involved? I was thinking it'd be more of a software thing with the EFI than any mechanical parts as both the 25 & 30 are supposedly both mechanically the same motor??

      Comment



      • #4
        Re: 2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

        Linkage, throttle body and ECM. The ECM can not be reprogrammed, hence the sticker shock.
        Elvin
        My answers are like Zen...It may not be the answer you want, but it is generally the answer you need.

        The 3 Rules:

        1) Look in your service manual first...Then ask me if it is correct.
        2) Understand that your desire to repair your engine does not mean that you have the ability to do so.
        3) If you are confused, take your engine into a dealer..Then let them be confused...At least, in theory, they sent someone to outboard 101.

        Comment



        • #5
          Re: 2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

          That is why I love my 2 stroke 25HP now 30hp it toke 10 minuets and zero parts
          Get wet. Get dirty. Get bounced around a little. Go slow. Go fast. Go fishing.

          Comment



          • #6
            Re: 2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

            Even at 1/3 the cost, you have to wonder if the 5hp increase is going to do anything noticable for you.
            I'm ordering a new one and (while I'm likely going to do it) have trouble justifying the $400 increase to get me an extra 2-3 MPH that I probobly won't need anyway.

            Comment



            • #7
              Re: 2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

              [QUOTE=TOHATSU GURU;1905681]About $1100.00 to convert it...I wouldn't do it.[/QUOT

              This is an old post from 2008, has the price came down any to convert to a 30hp? I have a 2006 Merc 25hp 4S efi, would love to get a little more out of it... dont really want to spend all the money and added weight to power up to a 40hp... Tohatsuguru?!?

              Comment



              • #8
                Re: 2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

                You would still need the very expensive ECU, so no, not cost-effective.
                Paul
                Certified TLDI Technician
                Buffalo NY USA

                Comment



                • #9
                  Re: 2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

                  Cost effective, is the price of this ecu under $500 now? Is there a way to find a used ecu on eBay? It would be worth it for me to get an extra 3mph, Im a sluggish 22mph now... New motor is +3.5k plus 75lbs....

                  Comment



                  • #10
                    Re: 2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

                    3ac064013m ecu, f30b $1091.79
                    Paul
                    Certified TLDI Technician
                    Buffalo NY USA

                    Comment



                    • #11
                      Sign up today
                      Re: 2006 Merc/Tohatsu/Nissan 25 EFI convert to 30??

                      What about this one on ebay, $550 OBO.... PART # 89195215S - # 891952Q15 . 30 EFI - ECM UNOPEN OME BOX. I dont know how to cross ref the numbers...

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