NOTE: Keep all connecting rod caps and connecting rod bearings in order.
4.
Connecting Rod Bearing Clearance - Inspect
1.
Clean the connecting rod journal and the connecting rod bearing half with a clean shop towel.
2.
Place one strip of plastigage across the rod journal.
3.
Line up the mark (A) on the connecting rod and the connecting rod cap (B), then reinstall the connecting rod bearing half (C), the connecting rod cap, and the connecting rod bolts (D) finger-tight.
NOTE:
Apply new engine oil to the bolt threads and flanges.
Do not rotate the crankshaft during inspection.
4.
Torque the connecting rod bolts to 10 N·m (1.0 kgf·m, 7 lbf·ft).
5.
Tighten the connecting rod bolts an additional 90 °.
6.
Remove the connecting rod cap and the connecting rod bearing half, and measure the widest part of the plastigage.
Connecting Rod Bearing-to-Journal Oil Clearance
Standard (New):
0.020?0.038 mm (0.00079 ?0.00150 in)
Service Limit:
0.038 mm (0.00150 in)
7.
If the plastigage measures too wide or too narrow, remove the upper half of the connecting rod bearing. Install a new, complete connecting rod bearing with the same color code, and recheck the clearance. Do not file, shim, or scrape the connecting rod bearings or the connecting rod caps to adjust clearance.
8.
If the plastigage shows the clearance is still incorrect, try the next larger or smaller connecting rod bearing (the color listed above or below that one), and check the clearance again. If the proper clearance cannot be obtained by using the appropriate larger or smaller connecting rod bearing, replace the crankshaft and start over.
5.
Connecting Rod Bearing - Select
Connecting Rod Big End Bore Code Locations
Connecting Rod Journal Code Locations (Letters or Bars)
Bearing Identification
1.
Inspect each connecting rod for cracks and heat damage.
2.
Numbers have been stamped on the side of each connecting rod as a code for the size of the big end. Use them, and the letters stamped on the crank (codes for rod journal size), to choose the correct connecting rod bearings.
NOTE:
If the codes are indecipherable because of an accumulation of dirt and dust, do not scrub them with a wire brush or scraper. Clean them only with solvent or detergent.
Each connecting rod falls into one of four tolerance ranges (from 0 to 0.024 mm (0.00095 in), in 0.006 mm (0.00024 in) increments) depending on the size of its big end bore. It's then stamped with a number (1, 2, 3, or 4) indicating the range. You may find any combination of 1, 2, 3, or 4 in any engine.
Big End Bore Size:
43.0 mm (1.693 in)
3.
Use the big end bore codes and the connecting rod journal codes to select appropriate replacement connecting rod bearings from the following table.
NOTE:
Color code is on the edge of the bearing.
When using bearing halves of different colors, it does not matter which color is used in the top or bottom.
6.
Connecting Rod Bolt - Inspect
1.
Measure the diameter of each connecting rod bolt at point A and point B.
2.
Calculate the difference in diameter between point A and point B.
Point A?Point B = Difference in Diameter
Difference in Diameter
Specification:
0?0.1 mm (0?0.004 in)
7.
Connecting Rod Cap/Bearing Half - Install
1.
Apply new engine oil to the threads of the connecting rod bolts.
2.
Seat the rod journals into connecting rod No. 1 and connecting rod No. 4. Line up the mark (A) on the connecting rod and the bearing cap.
3.
Install the bearing caps and the bolts finger-tight.
4.
Rotate the crankshaft clockwise, and seat the journals into connecting rod No. 2 and connecting rod No. 3. Line up the mark on the connecting rod and the bearing cap.
5.
Install the bearing caps and the bolts finger-tight.
6.
Torque the connecting rod bolts to 10 N·m (1.0 kgf·m, 7 lbf·ft).
7.
Tighten the connecting rod bolts an additional 90 °.
8.
All Removed Parts - Install
1.
Install the parts in the reverse order of removal.
