How many hours on crank bearings?

[Aceman]

I'm a little over 50 hours on the hourmeter since my last full rebuild.  The cylinder just came back from getting ported and honed, and I'm wondering if I should bother replacing my crank bearings or not?  How many hours do you guys run yours?  Is there anything else I should look at replacing or checking right now?

Thanks.

[thesmith87250r]

17 years an countless hours on stock bearings in  my motor. now only if the lower rod bearing would have stayed together i bet i would still be running them same crank bearings.