What would cause this weird bearing wear?

n.y.340 dart said
Mic the crank mic the bearings assembled with caps. deduct for clearance clean every thing spotless good assembly lube should be fine. Has to be clean!

Thats what I was told to do when I checked the bearing clearances, but I need micrometers, I may be able to find a pair of those, or borrow them. Yes I am going to make sure its as clean as possible!

moper said
Taper is measured. You get the crank to 70° temperature and get a micrometer. You measure each journal at a minimum of two points accross the width of each journal. (note rod throws have 2 journals per throw) Taper will show up if you measure properly and consistently. Or - bring the crank to the shop that turned it (may not be where you paid for it) and have them chuck it up and run an Arnold gage on it. That will definately find any surface issues.
If the original crank was only polished when the engine was rebuilt there's a very good chance the journals had a bundh of taper. Usually the wear leaves it "in spec" but having some, then it's polished which makes what's there worse.

I will take it to the shop, and bring in the bearings for them to look at and get everything checked out. I remember this time when I took the crank in to be turned they called me and said that the crank was ok, but not good compared to what the spec was, so I think it was a bit outa wack (just remembered that now) and they recommended to turn it.

Im still new to this, but this first time was kinda a learning experience, it costed me some cash, but I feel that I learned how to do it right now! and check EVERYTHING multiple times. I have a huge list of everything to measure and record now.

To clarify, from what I am understanding my issue seems to be a mixture of too tight clearances and some taper to the journals? This caused the uneven and accelerated wear on my bearings.