I just got my block back from the machine shop and am checking the
clearances.
The main bearings appear to be out of tolerance. I put the main bearing
half in the block dry. I put the crank in the bearing halves with light
lubrication on it. I put on 3/4 inch of .001 to .003 plastigage. I snapped
the bearings in the caps and installed them dry. I torqued the caps to spec
and removed them. The plastigage said I had 0.003" gap. The specs in my
shop manual said I need .0005 to .00015. I am double that.
The crank was turned 0.010 and the bearings are 0.010.
Did I do something wrong? Does plastigage lie to you? Any tips would be
appreciated.
Ken Rimington
1956 Dodge Custom Royal
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