Looks like you have an "A" impeller.
I set mine this past Jan 2013, at .025" f-r, and .012" r-l (radial), or .024" to .025" total (turned impeller skirt & oversized wear ring)
It was at ~.078" total, or .054" out of spec. Still had good performance, and there was no cavation 'out-of-the-hole' (then a huge rock took out a blade, severe cavation then) 
Sounds like your impeller is Done

manual, with pics-
http://www.americanturbine.com/downloads/pdf/oh_manuals/berk_oh_manual.pdf

Dan'l

Without the advantages of touch, taste, feel, smell, I am of the opinion that that impeller is done.

There are many signs of major cavitation that realistically cannot be repaired.

My recommendation would be pretty simple, get a new impeller and it's matching wear ring (I like Ultimate wear rings), a new thrust bearing, replace the bowl bearings and seal, new packing kit, check the shaft for straightness and inspect all the pieces and parts for cracks and put it back together.

The parts are cheap enough that this can be done on a budget and once back together will provide you years of dependable service and performance.

One word of caution, if you think you are even approaching 500 HP or 6,000 rpm, go with either a mag bronze or better yet a stainless impeller.

Good luck, the E is an OK pump, but if they will not load properly they will suffer worse than say a JG. The suction piece is real short and not real user friendly as far as modifications.

GT

so the je serious pump not being all that great should I waste the 1000 or so dollars on a ss impeller and just put a new aluminum in HP is at 500 or greater at 5000 rpm. What are my options for changing impellers to a different cutt and what's my worse case scenario running the aluminum impeller !! Should I be looking into a loader as well !!!!!! Thank you for your advise much appreciated


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