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  1. #1
    mtrager's Avatar
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    )5 Gp1300 with package and porting

    Guys,
    I received my stuff back from Lowell about three weeks ago. After having an assembly problem my motor came apart very quickly during break in. Please do not feel bad for me because I am OK now and the person who made the mistakes stepped up and is paying for the damage.

    I am writing this post because Fercho suggested that I take my ski to Performance in Clear water. I was very hesitate because he is 125 miles from me and new I would have to make a few trips. I had met Jim a few times but did not know him well.

    After Jim received my ski in less than two hours he had my motor out and had it pressure tested and found what had caused the problem. Yesterday I went to pick up my ski and Jim took me to a lake near his shop to make sure I did not have the experience I had 3 weeks ago. We went for a ride every thing is great.

    Now, for the best part. Jims 03 Gp has 435 hours on it with the original cylinder's and pistons. He has the Package without porting. I watched Jim run 76.6 miles per hour with a Full tank and his bucket in.

    Jim, thank you for being so professional and for being part of our sport.


  2. #2
    Yamaha tow boat RIDEALLDAY's Avatar
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    WOW, 435 hours! 2fun4u are you reading this? Your '03 has a future!!!!!!!!

  3. #3
    Happily Self-Employed WFO's Avatar
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    Cant wait till you get her broke in Mark. Jim does great work. I know you will see some 80s.

  4. #4
    Buaidh No Bas howestek's Avatar
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    "After Jim received my ski in less than two hours he had my motor out and had it pressure tested and found what had caused the problem."

    Congrats on getting it running correctly. What was the "problem"?

  5. #5
    mtrager's Avatar
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    The Technician that cleaned my heads used power tools with a scotch bright pad and got into the domes.

  6. #6
    if you don't mind me asking what was the problem he found. thanks

  7. #7
    Buaidh No Bas howestek's Avatar
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    Quote Originally Posted by mtrager
    The Technician that cleaned my heads used power tools with a scotch bright pad and got into the domes.
    Thanks for the reply. You learn alot through the experiences of others.
    This might be a dumb question but did the power tools scar the domes or did the scotch brite somehow do damage? It seems it must have been significant damage to have " my motor came apart very quickly during break in". In addition, how was this found with a pressure test?

  8. #8
    Could you give a few more details here please. Was it something that Lowell did is there something we should be looking for before we put are stuff back together? Thanks

  9. #9
    ABBOTT's Avatar
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    did you put the washers on all of the head bolts to compensate for the head milling. That is what this sounds like. Without the washers, the proper torque cannot be achieved.

  10. #10
    mtrager's Avatar
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    It was nothing that Lowell did he is a perfectionist.

    The heads were not flat anymore and water got into the back and middle cylinder.

    I was able to put 3 hours on it this weekend and it all seems to be fine.

    If you are porting an efi boat you better keep an eye on your plugs. When Lowell tells you I hope you can give it enough fuel he is NOT kidding.

    I weigh 270 lbs and my settings ended up at 7 on the top . I know everyone wants to hear speeds but after what I have been through I wanted to make sure I was getting enough fuel to the motor and brokin in before I start running the crap out of it.

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