Thanks, Mola. AFAICT, it's known with reasonable certainty that the bearings are steel backed with tin/aluminum alloy at the surface. Is that not enough to be reasonably sure that a tin spike might indicate bearing wear?
Originally Posted by MolaKule
My suggestion is to send the bearing you are going to be using to http://www.arrowlab.com/ labs and have them do an analysis on the elemental content. Without knowing the metallurgy of your engine components, UOA's will tell you nothing.