YX 160 engine casing

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Cakeshop

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I recently bought an engine off e bay. I was told that it's a YX160. The engine number is 1P60FMJ - (11). Does anyone know if this is a YX160 or have I been ripped off.
Also it was sold as spares or repair, and on stripping the engine, it looks like a bearing has exploded and cracked the engine casing. Do I need to find another 160 casing or can I use a 140. Also do I need to replace all the bearings ? Some of them seem to spin fine whilst other are a bit gritty
Thanks
 

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XXX-747

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Ouch mate
The 1P60FMJ is on both yx150 and yx160 basically the same as each other just different bore and stroke
I believe it may also be on z155
Don’t think you’d be able to use the cases of a 140 either
Your better off just buying new cases rather than welding imo and just buy new bearings aswell
 
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