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Zero oil clearance

Engine Building Fundamentals

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Just looking to the manual of a Yamaha exr jetski. 1.2 Liter, 3 cylinder n/a

The journal oil clearance is defined as 0.000-0.018 mm

Is zero oil clearance possible?

It is likely they are talking about a measurement at room temperature. The operating temperature will be higher, thus the clearance will increase.

Judd V8 F1 race engines are built with zero or interference fit, and require preheating the aluminum block to 160F degrees before even attempting to rotate the crankshaft.

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