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  1. #1
    TX21's Avatar
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    Crank seals GP1200R

    I need to replace my crank seals. Just bolted my top end back on and did the pressure test only to find the gay rear crank seal can't hold anything past 6psi. I really really really don't want to pull all that crap apart again just for the rear seal. If I can do it in the hull that would be great. If not can I pull the motor flip it over and unbolt the bottom half and reaplace the seals? Or do I have to tear it all down AGAIN! I am almost to the point of selling this pile o' shit and just riding my standup.


  2. #2
    TX21's Avatar
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    Guess I am SOL and have to pull the motor out and apart ...again.

  3. #3
    smacota1's Avatar
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    I have tought about flipping it over myself....Don't really see why it wouldn't work as you dont have to raise the crank very far to install the seals. Probably not the best way to do it...

  4. #4
    TX21's Avatar
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    Yeah I thought about it a bit more. I think the part that would not work is cleaning the mating surfaces of the crank case. It would be hard to get at all the tight spots with the crank installed.

  5. #5
    Try not to smile on a Jetski... GPRFrank's Avatar
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    Its not worth the time or money to do the flip idea. Do it right Do it once. I def learned that the hard way.

  6. #6
    smacota1's Avatar
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    Really,

    The only cost to do it right would be using new piston clips and flywheel bolt. Minimal.

  7. #7
    TX21's Avatar
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    I plan on reusing my piston pin clips since I havent even run them yet. And is that flywheel botl a stretch bolt? I think all I need is the crank seals (had some already) and 1211 sealer. The head, top and bottom, base gaskets and exhaust gaskets have not even been run yet so I plan on reusing those too. Gotta get the time to do it now.

  8. #8
    Moderator OsideBill's Avatar
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    I flipped a older 65U motor and did a Seal Swap, the thing is you have to be careful cleaning the surface on the upper case half. Not a lot of room to work but it can be done.

  9. #9
    Happily Self-Employed WFO's Avatar
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    I just flipped one last week for the same reason... took my time and cleaned mating surfaces and it worked just fine

  10. #10
    TX21's Avatar
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    Oh really I may have to give it a shot. Fork it!! I will have the motor out already guess I can always pull it apart if it dosent pass the leak test.

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