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 Hi, 

     01kx2500

Long story short......i THINK I have a crack in my crank case. The symptoms were lots of smoke, burned up the capacity of the transmission oil in three hours ride time. I sent the bottom end to a local dirt bike shop and he replaced the crank bearings (one bearing was shot) and seals  (one seal was disfigured). He and I confirmed the crank (previous owner installed a weisco crank) was still good (no up and down play). Put the bike together and still burned tranny oil. So I assume cracked case. Haven't taken it apart yet to verify because I'm afraid of the bottom end. Anybody here want to take a look at it with the assumption of making a weld? 

 

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if there is a crack you would probably be able to see it if you take the inner clutch cover off.  once that is off you could pressure test it to confirm.  if you have to split the cases I'd consider yanking that wiseco crank out buying a used OEM on ebay and rebuilding it.

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