Crankshaft Main Bearing Journal-to-Bearing Clearance

WARNING: This page is about a different car, the 2013 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Refer to the appropriate Engine article for the specification.

NOTE: Crankshaft main bearing journals must be within specifications before checking journal clearance.

Remove the crankshaft main bearing caps and crankshaft main bearing.
Lay a piece of Plastigage across the face of each crankshaft main bearing surface.

Fig 1: Locating Crankshaft Journal Clearance
Courtesy of FORD MOTOR CO.
NOTE: Do not turn the crankshaft while carrying out this procedure.

Install and remove the crankshaft main bearing cap.
Verify the crankshaft journal clearance.

Fig 2: Measuring Crankshaft Main Bearing Journal-To-Bearing Clearance
Courtesy of FORD MOTOR CO.