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Home >> Porsche >> 1986 >> 928 Automatic >> Repair and Diagnosis (Single Page) >> Engine Mechanical >> Mechanical >> 5.0L V8 >> Crankshaft & Rod Bearings >> Main Bearings

Main Bearings

Using hole gauge and micrometer (or plastigage method), measure all main bearing inserts I.D. and crank journals O.D. to check insert-to-journal clearances. Maximum clearance is no more than 0.006" (.16 mm). Grind crankshaft and replace bearing inserts as necessary.

NOTE: New design main bearings have additional oil ports at bearing split line. These bearings may be used in 1984 and later vehicles.
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