Loud Knocking Diagnosed - Spun Bearing:(

[Jim Green]

Well on the advise of Javad and Phil, I dropped the
oil pan, and found a spun rod bearing in cyl #4.

http://www.geocities.com/jeg1976/bearing.jpg

Well that lasted a whopping 40 miles.  The crank is
still in pretty good shape, but needs polished.  The
picture looks worse than it is.

http://www.geocities.com/jeg1976/race.jpg

I dug up a post in the archives that sugested using
600 grit, then finishing them off with fine
Scotchbrite.  I like this idea much better than
pulling the engine out again.  Anyone see any reason
why I shouldn't try it?  I'm going to check to see if
it's out of round, but I doubt it since I only drove
it about two blocks.  All the other bearings look
fine.
Thanks,

=====
Jim Green
'89 90tq EFI
http://www.geocities.com/jeg1976/car_home.html

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