Never trust the blue marks - Page 2
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  1. #11
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    Re: Never trust the blue marks

    Quote Originally Posted by kcr357 View Post
    A blind person pressed that balance shaft together.
    I pressed it back together, but it went back together the exact way it came apart -- you can even see in the picture that the marks I made prior to taking it apart line up perfectly. The motor came in a non running ski. I didn't even bother running the ski and did a complete rebuild. So I did not have any indication that the balance shaft was completely wrong. I thought it was strange the weights were not 180 apart but I thought it had something to do with running the air pump.

    When I press the weight back off how can I measure to ensure the weight is phased correctly? The service manual only states to mark it prior to removal. hmm.

  2. #12
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    Re: Never trust the blue marks

    Looked again. Mag side is approximately where it should be.

    So yeah, it wasn't the blue mark, it was the the PTO balance weight. How was it like this before though? I am 100% I reassembled the balance shaft exactly how it was disassembled. I marked it prior to disassembly and lined up the marks on reassembly. And how do I get a good measurement to correct it?

  3. #13
    PWCToday.com Is My Home Away From Home kcr357's Avatar
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    Re: Never trust the blue marks

    The counterweights on the balance shaft should be 180 degrees apart from crank counter weight next to it.
    In the first pic the rear counter weight is 180 degrees off, the front looks like 90 degrees off. Either way, it's not right.
    How many gerbils could a gerbil jammer jam if a gerbil jammer could jam gerbils?


    "You build cheater motor's & still get smoked !!!!"
    "Its not your fault. You just don't understand what you're talking about. "

  4. #14
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    Re: Never trust the blue marks

    Yes, was overthinking... 180 off on mag side and 90 off on pto. I can't understand...

    Ill move pto 90 deg and ignore the blue marks. Just gotta figure out a good way to measure and locate balance weights.

  5. #15
    PWCToday.com Is My Home Away From Home Grumpy Old Guy's Avatar
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    Re: Never trust the blue marks

    I would just get a remaned one or a good used one from ebay.

  6. #16
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    Re: Never trust the blue marks

    Quote Originally Posted by Grumpy Old Guy View Post
    I would just get a remaned one or a good used one from ebay.

    I thought this was a "good" used one. LOL. Came in a engine that I was told was previously running well -- I knew there were some issues due to 90psi compression in PTO. Decided to tear down and rebuild completely.

    The thing must've run like a paint shaker before, which may explain the missing ring locators and consequently broken ring land.

    The lesson is the same as always... When something seems a little off, stop and investigate. Always learning.

    I have an extra balance shaft from a carb ski. I will use that to take some measurements to correct the shaft I have. As I just put new seals and bearings on this balance shaft already, I'm not ready to throw the towel in on it yet. When I reassembled I put weights back where they were but I should've thought about it some more and confirmed. Doing things twice is just so much more fun.

  7. #17
    Top Dog Benflynn's Avatar
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    Re: Never trust the blue marks

    Quote Originally Posted by highcam View Post
    Doing things twice is just so much more fun.
    Tell me about it, just pulled a half dozen hg bolt threads on a corvette

  8. #18
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    Re: Never trust the blue marks

    Quote Originally Posted by Benflynn View Post
    Tell me about it, just pulled a half dozen hg bolt threads on a corvette
    ouch.

    Profile pic yours? I do a little white water myself.

  9. #19
    Top Dog Benflynn's Avatar
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    Re: Never trust the blue marks

    Yeah, hammer factory @green

  10. #20
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    Re: Never trust the blue marks

    Quote Originally Posted by Benflynn View Post
    Yeah, hammer factory @green
    Nice man!

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