Use a micrometer. A dial caliper (or even a digital) is only good for a SWAG. You need to make measurements of the journals you can reach for wear and taper down to a tolerance of .0005" or so. Unless the crankshaft is out of the block, it's difficult to get that accuracy on the main bearings. Drop me a PM and I can give you the exact measurements you're looking for.
Jerry



"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
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