MC-2 oversized pistons or not?

[Jim Green]

I've got my spare MC-2 block stripped, getting ready
to rebuild the bottom end.  There is a little wear at
the top of the cylinders, I though it was crud at
first.  I cleaned everything up and there is a very
small wear line.  Can't catch it with a fingernail,
but can barely feel it with your finger.  I haven't
measured anything yet, but want to know how large the
bore can be before you have to move to oversized
pistons?  I don't have a Bently that covers that for
this engine.  I'd like to have the cylinders cleaned
up by a pro, then fit some new rings, hopefully
avoiding new pistons.
TIA,

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

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