Civic L4-1.8L (2006)
Connecting Rod Bearing: Service and Repair
Connecting Rod Bearing Replacement
Rod Bearing Clearance Inspection
1. Remove the oil pan.
2. Remove the oil screen and baffle plate.
3. Remove the connecting rod cap and bearing half.
4. Clean the crankshaft rod journal and bearing half with a clean shop towel.
5. Place Plastigage across the rod journal.
6. Reinstall the bearing half and cap, and torque the bolts to 20 Nm (2.0 kgf-m, 14 ft. lbs.) + 90° using a commercially available torque angle gauge.
NOTE: Do not rotate the crankshaft during inspection.
7. Remove the rod cap and bearing half, and measure the widest part of the Plastigage.
8. If the Plastigage measures too wide or too narrow, remove the upper half of the bearing, install a new, complete bearing with the same color
code(s), and recheck the clearance. Do not file, shim, or scrape the bearings or the caps to adjust clearance.
9. If the Plastigage shows the clearance is still incorrect, try the next larger or smaller bearing (the color listed above or below the current one), and
check clearance again. If the proper clearance cannot be obtained by using the appropriate larger or smaller bearing, replace the crankshaft, and
start over.
Rod Bearing Selection
1. Inspect each connecting rod for cracks and heat damage.
Connecting Rod Big End Bore Code Locations
2. Each rod has a tolerance range from 0 to 0.024 mm (0.0009 inch), in 0.006 mm (0.0002 inch) increments, depending on the size of its big end
bore. It is then stamped with a number or bar (1, 2, 3 or 4/I, II, III, or IIII) indicating the range. You may find any combination of numbers and
bars in any engine. (Half the number or bar is stamped on the bearing cap, the other half is on the rod.) If you can't read the code because of an
