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  1. #1
    Plut's Avatar
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    Is this Crankcase still usable?

    I threw a rod on my 98 SLTX and it cracked thru near the top into the hollow chambers. As far as I can tell nothing goes into these chambers and there shouldn't be any intense pressure down there. Would it be ok to weld the cracks and use it?

    I bought a 100% rebuilt crank with all brand new bearings and rods, rebuilt the carbs and replaced all the fuel line so hopefully this wont happen again.


    Click image for larger version. 

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    Anyway if somebody has a 1050 case they want to sell or trade, I have a complete spare jug, piston, and cap. also a 700 case and some other random stuff from a 700.


  2. #2
    caliburn's Avatar
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    You cannot repair any cases that has a crack to a mating surface, sorry to tell you but you need a bottom and top case as never just get either or, you have to get both as a set.

  3. #3
    john zigler's Avatar
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    Sorry, but your cases are DONE.

    DO NOT mix and match case halves as they are line bored, and a matched set.

    I have a good, fresh water set here, 250.00 + s&h

    here is a link to a picture;


    http://s243.beta.photobucket.com/use...59405931288023

    for payment I take visa, and master card. sorry, not interested in any trades.

    can also supply, new crank seals, gaskets, pistons, etc.

    feel free to call the shop if you want to order

  4. #4
    Myself's Avatar
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    I've repaired and run much worse. There is no issue fixing that if done properly. Grind a small V into the crack, remove any paint nearby (I usually hit it with the sandblaster), then use a propane torch to sweat any remaining oils out of the aluinum pores. Then spray with brake cleaner (away from your flame!). Then heat and clean again. Any good welding shop can weld that right up to the mating surface. Then use a flat file to get it back real close to flush. Then color over that area with a sharpie marker . Now find a piece of glass or plate steel and tape down a couple sheets of 320 grit wet sandpaper. Dump a little soapy water on there and turn the case half upside down and rub back and forth until you can see in the sharpie markings that the whole area is dead flat again. PIECE OF CAKE! In fact I always mark and true mating surfaces on all parts of a full rebuild. The exhaust manifolds are ALWAYS warped.

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  6. #5
    Myself's Avatar
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    Here is the worst one I've done . Yam 800 PV. It was for a local family that wanted to fix as cheap as possible. I cut the aluminum plate and fitted the parts together, guy charged me $75 to weld it up, then I had a little grinding and trueing to do. I couldn't find a good used case set at the time for less than $450. They enjoyed it thoroughly all last year with no issues.





  7. #6
    fixer's Avatar
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    +1 I fixed the cases in my fusion 3 seasons ago W no troubles yet. Its a lot of risk & work if you don't nail it. You can get away with it, but why bother if you don't have to. I have a set you can have for $100. PM me if your interested.

  8. #7
    Myself's Avatar
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    For $100 I wouldn't bother with the labor. Just buy that and be done.

  9. #8
    Plut's Avatar
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    Fixer I sent you a PM. Thanks to everyone for your input. Myself, your work has me tempted to try to repair it but for $100 your right why bother.

  10. #9
    Myself's Avatar
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    Well, play with it and repair it in your spare time. Then save it for a spare.

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  12. #10
    Dont tell this guy something isnt repairable.

    http://weldingweb.com/showthread.php?t=241751

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