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CR125 Knocking sound

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I have a 2000 CR125 with a noticeable knocking sound, i have took of the top end, there was no play at all in the crankshaft, only side play, no play in flywheel either.

i will replace top end with a new needle bearing and pin with new piston.

 

 

Can anyone help me find what the knocking is ?

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Only takes alitte bit of rod play to make noise.  Grab rod with left hand tightly pulling up . Then hit down not really hard with palm of other. If you feel it or hear clicking its goin bad. Also seen the bushings on clutch hub get worn and make noise.  That era cr. Alone kickstart idlergear can make noises to when wore. 

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some of those crs would lose the bushing in that idle gear during rebuilds.  oddly they would start reasonably well,  but you got a lot of noise.   I like the idea of tearing it down and inspecting everything though.  

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