Hugh---Determining how much end play you have is best measured with a
dial indicator, and taken off the end of the carnkshaft. A change of
these washers can also be done from under the engine by picking up a
point on the crank that will show, as you lever it forward and back. (It
can even be done with feeler gauges if you just want to get within a few
thousandths
To determine the thicknesses of the replacement washers, first see how
much end play there is. As an example, say there is .015 and you want to
end up with .005. Come up with a combination of thrust washers that are
.010 thicker than the total thickness of the two you are replacing. It's
OK to mix-and-match a standard (.092) with the oversize (.097 or
thicker) if necessary.
Replacing the rod and main bearings can be done while you're under
there. With less than 60,000 miles on this engine, you can probably get
away without a crankshaft grind. I would recommend a polishing of all
journals by see-sawing strips of Crocus cloth all around. Tear off
strips to match the width of the journals. It only takes a few minutes
on each one to bring back a high polish, and thereby give the new
bearings a chance for long life.
Dick T.
'73
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