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  1. #1
    1131 Adam E.'s Avatar
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    GP 1200 Hull Cracking

    After an intensive search of Yamaha, Google, PWC, and here I have found no definitive answer regarding the early 1997 GP 1200 hull cracking. Some say 500 and under while others say 5000. Before I evaluate my ski I'm wondering where to look and what the possible solutions are regarding this problem. From my understanding no one sells the enforcement kit anymore?

    For reference the last 4 digits of my primary hull number are 1854.

    Adam


  2. #2
    krispaintballz's Avatar
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    Don't worry Adam your fine. Just ride and have fun. The problem was blown out of proprtion. It was only the first 500 or so. Most of them went back and either were supported or just exchanged out. Have fun less worry.

  3. #3
    1131 Adam E.'s Avatar
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    Quote Originally Posted by krispaintballz View Post
    Don't worry Adam your fine. Just ride and have fun. The problem was blown out of proprtion. It was only the first 500 or so. Most of them went back it and either were supported or just exchanged out. Have fun less worry.
    Thanks Kris. After last years catastrophe (2 blown engines, less than 20 hours) I guess I'm just being a little paranoid trying to cover my corners.

  4. #4
    1131 Adam E.'s Avatar
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    Do you think these are worrisome? Also what is that thru hull fitting in the upper right portion of the pump picture?

    Adam
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  5. #5
    Mongoose's Avatar
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    You know if youve got the stronger hull because you wont have any trim tabs fitted.(Actually not 100% true, because riva and pro-tec designed a smaller after market one for the stronger hulls), but stock-no trim tabs-When they corrected the hull cracking issues they also correctd the crappy trim tab issue, and did away with the big step where the plastic trimtab sat by extending the hull moulding out.
    Hope this helps.

  6. #6
    1131 Adam E.'s Avatar
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    Bump.

    What do you guys think of these cracks?

    I just plan on using West System to strengthen them. Any thoughts?

    Adam
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  7. #7
    Flying Scotsman's Avatar
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    Look minor to me nothing to wory about.West system or marine tex will fill it no problem.

  8. #8
    Flying Scotsman's Avatar
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    Quote Originally Posted by Adam E. View Post
    Do you think these are worrisome? Also what is that thru hull fitting in the upper right portion of the pump picture?

    Adam
    1st pic looks troublesome the other cracks are in the runners not such a big deal but the 1st one looks like a bad fix.

  9. #9
    Waveblaster785's Avatar
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    Quote Originally Posted by Flying Scotsman View Post
    Look minor to me nothing to wory about.West system or marine tex will fill it no problem.
    If you fill the cracks you are wasting your time and money. Filling cracks doesn't strengthen anything. Just my 2 cents.

    As far as the 97's, mine cracked. People say it was only the first few, and it wasn't that bad, so forth. I think you have to actually ride your ski aggressively to break them. Most of the guys in this section ride flat water, to see how fast they can go, nothing wrong with that, but that's not all that stressful on the ski and would probably never crack it. If you're jumping waves, or riding in the ocean, I'd lay some glass up inside. I just transferred everything to a 98 which is layed up with some extra 20oz biax.

    My 97 cracked sideways from gas tank mount to gas tank mount, and from about 1-2ft in front of the pump tunnel all the way up to the bow. But I beat the shit out of it too.

  10. #10
    Moderator OsideBill's Avatar
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    The outlet in the pump tunnel is main water dump from the exhaust pipe.

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