bead-blasting cam brgs

[Jan Ben <ben@domain.elided>]

I rebuilt a '77 2.0 maybe 10 yrs ago.  I had the head bead-blasted and 
the cam brg surfaces got blasted too.  I raised a big stink about it 
with the shop,  but nothing came of it.  The machinist said he did it 
all the time with no comebacks, and he thought it was a good thing: it 
supposedly keeps some oil adhered to the surface on startup.  Crock of 
shit, methinks.
Then in our machine shop I guestimated the surface RMS, and I guessed it 
was on the order of magnitude of the oil film in the bearing.  Not good.
But heck, I had nothing to loose so I put it back together.  The bottom 
line, it ran fine for at least 20k miles of my hard driving, and then I 
sold it, it went another 50k before it was resold.  And the guy who I 
orig sold it to took it to Canada and Arizona, and he still speaks to 
me, so I guess it served him OK.
YMMV :)
Jan

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