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  1. #1

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    650 and 750 crank cases the same?

    I've been searching for over an hour now and cant seem to find an answer. Lots of posts regarding 750 cases but not much on anything else.
    I have found a 650 crankcase that I can get cheap,(my 750 case froze and broke before I received the ski) I beleive my 750 upper case can be welded back up, but I would rather just replace it. Does anyone know?
    thanks
    --Justin

    PS the 750 case is broken from coolant passage to exterior under exhaust manifold-3 cracks


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    They are the same.

    It's not wise to swap lower and upper case halves. Keep them as a set.

    Something to do about being line bored or somehing along those lines.

  3. #3

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    also, the 650 case is a '95 if it matters, my ski is a '93

  4. #4

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    sweet, okay, well I'll be getting them as a set, so I'll keep the matched up, i've seen the line boring come into effect as well as having seen the caps be off center from one block to another(on cars). So, I could see that as a problem.
    thanks!!
    --Justin

  5. #5

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    750

    i have a good 93 750 except for pto piston.200.00 plus shipping

  6. #6
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
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    Quote Originally Posted by xlint89 View Post
    They are the same.

    It's not wise to swap lower and upper case halves. Keep them as a set.

    Something to do about being line bored or somehing along those lines.
    WOW, you are SMRT.

  7. #7
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Quote Originally Posted by mechanicalmehem View Post
    also, the 650 case is a '95 if it matters, my ski is a '93
    93 cooling system uses the case to route water through it, the 95 doesn't use this sytem, so you'll need to re-route some cooling. Nothing difficult at all.

  8. #8
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Quote Originally Posted by Keddano View Post
    WOW, you are SMRT.
    I sure is.....

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