I would recommend that you take your engine to someone with experience with lc4s or ktm 4st singles. Crankshaft main bearing journals must be shimmed to ensure correct end float and alignment, this can only be done correctly by someone with the special tools for removal and replacemant of the crank side journals. You should also replace the scavenge pump as unfortunately these pick up unfiltered oil! so are likely to be damaged in the event of a bearing failure. Whilst i appreciate this is an unwanted event, try to look at it as an opportunity to upgrade your engine as well as overhauling it. If your unfamiliar with lc4s make sure to follow the correct procedure for oil filling as this is a common reason for bearing failures! Good luck.
|