Connecting Rod Bearing Journal Clearance

Check 

• 1.
  
  
  NOTE: The crankshaft connecting rod journals must be within specifications to check the connecting rod bearing journal clearance.

  Remove the connecting rod bearing cap and connecting rod bearing.

• 2.
  
  Position a piece of Plastigage across the bearing surface.

Courtesy of FORD MOTOR COMPANY

• 3.
  
  
  NOTE: Do not turn the crankshaft during this step.

  Install and tighten to specifications, then remove the connecting rod bearing cap.

• 4.
  
  Measure the Plastigage to get the connecting rod bearing journal clearance. The Plastigage should be smooth and flat. A changing width indicates a tapered or damaged connecting rod or connecting rod bearing.

Courtesy of FORD MOTOR COMPANY