Re: shaft - spun connecting Rod Bearing
1) Yes, I believe that this our of roundness would be a problem. Best to go to a machinest and find out...
2) Dude, I've got the service manuals.. if you're interested, send me a pm.
3) Didn't you pull the engine to see what damage there is??!?
When rebuilding your engine, make sure you use Clevite 77 bearings. You can get them in sizes of up to -.75mm.. (dont know if this helps now). From what I remember, teh part number is CB-1772P.
I'm pulling my engine out later this year/early next year and replacing it with a larger 3L. If you're interested, you can have the crank out of my 2.5.