No specifications, but virtually all the engines I've worked on over the past 50-something years live pretty well with oil clearances of .002" or slightly less. If you get much over .003" it's hard to maintain a film of oil between the parts unless you run very heavyweight oil. Some air-cooled engines with wide piston to cylinder clearances are the only exception, and that's more about heat expansion of the pistons than lubrication.
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!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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