8050 670I main bearing issues

Complete out of frame overhaul on my 8050. Long story short due to an injector failure on number three piston it cooked the piston and wrist pin bushing and cracked the block deck and the crack went down and followed the counter bore, block is junk. Using a 670T block but it has the piston cooling jets in the web where as the 670I has the piston cooling jets in the top of the rod as the wrist pins are pressure oiled.

Reliance kit was all I could source and all their main bearings have the slot for main bearing piston cooling where the Clevite bearings from a previous inframe do not. Reliance supplies 6 steel balls to drive in the main bearing piston cooling orifices, which went in fine on mains 1-5, however main 6 for piston 6 Allis Chalmers has drilled the orifice too deep leaving barely a ridge for an orifice and the steel ball drops right in and there is no material to drive it down into to keep it in place. What would be the best solution? I don't have any hardened steel balls the correct diameter for the small hole that is there, and don't really like the idea of drilling it out to fit. A 3/32 drill bit fits loose and a 7/64 won't go in. I do have some brass and bronze bushing stock, I could turn up a plug the correct size and drive that in which is what I'm leaning towards. Does Clevite/Mahle still have main and rod bearings available without the piston cooling slots? Agco? The cam bearings I sourced are Mahle and not Reliance but I have a feeling that even Mahle mains would have the oil slot.

I've got pictures but it won't bring up the upload page to post them


Edited by Dave7060 - 25 Jan 2025 at 3:05pm