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1975 MAKO 23 Project

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  • 1975 MAKO 23 Project

    Actually it isn't much of a project. It just needs a motor. I was wondering if a 115 would be enough power for the boat. Looking for economy as most of my fishing is 15 to 20 miles offshore.

    Thanks, Ron

  • #2
    Welcome and congrats. A general rule for power is no lees than 75% of the max power. If it says max 250, min would be 175 and that will work on some hulls but not all. 200 is probably what you will need. Hopefully others with that hull will help answer your question.
    OBX, NC - 1992 Mako M-231 - 99 Yamaha ox66 225 -Sold-[br]

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    • #3
      Welcome to CM and mako madness
      1984 Mako 238 WA [br]2015 Suzuki 250 APX[br]Central PA/OCMD[br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=35081[br]

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      • #4
        The 23 is a deeper v so I don't think you would be happy with a 115. You might be able to get away with a 150, but a 200 is about the smallest you see on those boats.
        1978 Mako 25 - Blind Hog
        1985 Mako 20c - sold
        Fort Walton Beach, FL
        http://www.classicmako.com/forum/top...TOPIC_ID=42841

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        • #5
          Actually the 70's 23 has a shallow vee at stern then the 231 so I would still say 200 minimum because they are on hefty side hull wise

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          • #6
            Thanks for all the info.

            I still think that a 140 0r 150 would work to my satisfaction.

            I guess the only way to tell is to put one on it. If it doesn't work out I can always sell it and go from there.

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            • #7
              quote:


              Originally posted by captnronfl


              Thanks for all the info.


              I still think that a 140 0r 150 would work to my satisfaction.

              I guess the only way to tell is to put one on it. If it doesn't work out I can always sell it and go from there.


              Between the two, the 150 would be the better choice.

              Daniel is right, that model does have a shallower hull so less power could be used.

              I did have a friend that put a 90 on his older Mako 19 and although it took FOREVER to plane, once it got going it was fine at cruising.
              1978 Mako 25 - Blind Hog
              1985 Mako 20c - sold
              Fort Walton Beach, FL
              http://www.classicmako.com/forum/top...TOPIC_ID=42841

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              • #8
                I have found a 150 that is on a bass boat that I am considering. I have also found a 225 for the same price. I just didn't want to burn a lot of fuel. I also found a 175 for $1300 but no way to test it other than compression and it's around 110. I was thinking that is low but not sure. Seems someone told me it should be 120 or higher on a cold engine.

                Does anyone know what it should be?

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                • #9
                  I have a 1975 23 with a 1983 Johnson 150 on it. It is the shallow v boat. Believe it or not the 150 does do "ok" on the boat. I think I am down to a 15 pitch prop and she will run 39 MPH at WOT 5000-5100 rpm's.

                  Its not bad on gas IF you back it off to about 30 MPH.
                  Don [br]Houston TX[br]1975 23 CC Mako Merc 225[br]1976 20 CC Mako 150 Johnson[br] [br]

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                  • #10
                    Thanks. I picked up a 225 complete with a 1978 aquasport 22-2.

                    I am still thinking about 150 or 175 for the Mako.

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                    • #11
                      The 225 would be in the Mako's sweet spot

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