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Transom corner crack

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  • Transom corner crack

    In the last few month this crack has started to "grow" little by little. I can jump on my lower units and the transom does't have any flex. Its a 1991 251 fwc with twin 225 YAMAHA ox66. Should I be concerned?

    https://imgur.com/a/LzEw1
    Guaynabo, Puerto Rico[br]1996 Mako 19, twin Yamaha 85\'s (sold)[br]1991 Mako 254, twin Yamaha 225 OX66[br]

  • #2
    Always concerned with cracks. You may want to take some steps to at least seal it up. Stop the water penetrations points.
    [br]1984 Mako 224[br]1977 Mako 15[br]Clermont, Florida- [br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=37212 -Rewire[br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=40627 -Tank/Misc[br]http://www.classicmako.com/forum/topic.asp?TOPIC_ID=58615 - Aft Box removal

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    • #3
      quote:


      Originally posted by snappergapper


      Always concerned with cracks. You may want to take some steps to at least seal it up. Stop the water penetrations points.



      +1. That is the begining signs of a future transom job. I agree with Marc - seal it up as best you can to prevent more damage. I would check your brass scrupper drains for holes, pull motor bolts one at a time and reseal, and check all other penetrations. It seems they used a lot of putty up in that area which does not respond well to any flexing which is why cracks show there first.
      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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      • #4
        Pretty common. I ground my cracks out and glassed over them. They never came back. A few years later I did my transom and found there had to be 1.5 -2" of filler in the top of transom. Filler isn't structural and doesn't flex and it's a sharp corner, bad recipe []
        [br]Michael R. Delgado[br]1972 Mako 22[br]http://classicmako.com/forum/topic.asp?TOPIC_ID=15745[br]1976 Mako 25[br]http://classicmako.com/forum/topic.asp?TOPIC_ID=18013&SearchTerms=mako,25[br]

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        • #5
          I installed these engines a 1.5 years ago and put a lot of 4200 in the bolts. Also just painted the boat and re-sealed the trim tabs, eliminated the lifting rings in the back and the ladder mount. I'll grind the crack and will glass over it.
          Guaynabo, Puerto Rico[br]1996 Mako 19, twin Yamaha 85\'s (sold)[br]1991 Mako 254, twin Yamaha 225 OX66[br]

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