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Divide by two?

Practical Engine Building

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Is oil clearance simply (Block inner diameter) - (crank journal outer diameter) or is it defined as ((Block inner diameter) - (crank journal outer diameter)) divided by two, to represent the clearance on either side when rotating?

The total.

EG, journal (outside) diameter 50.000mm, bearing (inside) diameter 50.064mm, clearance = 0.064mm.

Thanks!