Quote:
Originally Posted by running_cold924
that last one scares me.....if your building an engine (TO KEEP) i'd do it right. some stuff you just can't skimp on...
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Yeah, it had me concerned, too. That weird spot is actually slightly rough feeling.
I think I'll just replace the bearings. everything else on the motor will be refreshed. It would be a shame to incomplete the complete rebuild and risk marginal mains. I want at least another 100,000+ miles out of this motor and don't want to be cut short because of something stupid like this that needs every single piece of the motor to be disassembled in order to replace them. The crank is in good shape, but there are a few small scratches near the oil feed holes, so I'm going to talk to my machine shop about polishing them. The thrust clearance came up on the feeler gage at only 0.15mm, so I was tempted to just leave them undisturbed, but I'm glad I needed to pull it all apart anyway to wash the cylinders.
I want to know how grit big enough to do this stuff gets there to begin with. The oil feeding these is straight out of the oil filter.