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  1. #1

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    Quick in-hull crankcase cleanup?

    Rear oil line came off a '01 GP1200R w/ 250 hrs. Crank turned fine by hand before taking head and cylinder off. Do have metal shavings down in bottom of case. Wanted to do a quick repair, (keeping motor in hull), by dropping in used piston & rings and re-attach oil line, use the money I make from this one toward a lesser hours GP to keep and modify. Can I use an air hose to clean out case so as not to remove entire motor? I want to be able to sell it to someone with a clear conscience, at least knowing my work will hold up long enough for something else to break on this high hour ski.
    Thanks for any input.Click image for larger version. 

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  2. #2

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    check the play of the rod on the crank, make sure that's all in spec, then I'd say suck it out with a wet / dry vac. Make sure there's no fuel down there though. Then perhaps flush it with something non-flammable (WD-40?) and suck it back out with the wet dry again.

  3. #3
    Happily Self-Employed WFO's Avatar
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    brake kleen and suck it out... then repeat several times

  4. #4

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    If you're going to use a wet dry vac make SURE you use non-flammable brake cleaner.

    A small amount of a flammable substance might not hurt - a VERY small amount. Problem is the motor in a wet dry vac is not ignition protected, and the air (and vapor of whatever is in the vac) is blown right across the motor. If you suck gasoline with it, it WILL blow up. Brake cleaner is pretty volatile too, so I'd be careful.

    You can buy non-flammable brake cleaner, and that's probably your best bet as far as cleanup.

  5. #5
    vomitspot's Avatar
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    i use brake cleaner to wash it all down to the bottom , then mop it out with small rag
    after several cleanings oil everything back up
    in your pic it only shows a little of whats in there

  6. #6

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    Those two little holes on either side of hte piston go directly to your crank bearings. Make sure you suck everything out of there really well and pour some oil in those holes, or a new crank is in your future.

  7. #7

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    Thanks to all.
    Hope to have it on the water this weekend.

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