Bottom end rebuild

[rkw]

So at what mileage does everyone recommend to rebuild the entire motor? I have 11,500 miles on a 99 Cat ZL500.
I ringed it at 6000 miles and I know I should at least put pistons in it this summer, but what about the bottom end?
I've used Amsoil her entire life and have had no mechanical issues with the engine. A couple stators of course, but nothing else.

 

[tyeeman]

Case and point for using quality oil! I would think if you had the crank assy inspected by an egine shop they might be able to tell you if you need to rebuild the crank or not. That said it's not that expensive to to have new bearings installed. You could probably have the new bearings on the crank, have the crank trued for under $500.
At this point I would be more concerned about crank seals rather than the crank itself.

 

[rkw]

Yes, I agree about the crank seals, I've been a little nervous about them this season. Thanks for your help.
Kevin