Engine Block: Overview Acura RSX I facelift

Scheme 196

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Scheme 200

1. Remove the oil pump (see «OIL PUMP REMOVAL»(ref-218779-S09454865332006021000000) ).
2. Remove the baffle plate (see step 7 ).
3. Measure the connecting rod end play with a feeler gauge between the connecting rod and crankshaft. Connecting Rod End Play Standard (New): 0.15-0.30 mm (0.006-0.012 in.) Service Limit: 0.40 mm (0.016 in.)
4. If the connecting rod end play is out-of-tolerance, install a new connecting rod, and recheck. If it is still out-of-tolerance; replace the crankshaft (see step 8 ).
5. Push the crankshaft firmly away from the dial indicator, and zero the dial against the end of the crankshaft. Then pull the crankshaft firmly back toward the indicator; the dial reading should not exceed the service limit. Crankshaft End Play Standard (New): 0.10-0.35 mm (0.004-0.014 in.) Service Limit: 0.45 mm (0.018 in.)
6. If the end play is out-of-tolerance, replace the thrust washers and recheck. If it is still out-of-tolerance, replace the crankshaft (see step 8 ).

Scheme 201

1. To check main bearing-to-journal oil clearance, remove the lower block and bearing half (see «CRANKSHAFT AND PISTON REMOVAL»(ref-218777-S40031569512006021000000) ).
2. Clean each main journal and bearing half with a clean shop towel.
3. Place one strip of plastigage across each main journal.
4. Reinstall the bearing half and lower block, then torque the bolts to 29 N.m (3.0 kgf.m, 22 lbf.ft) + 56°. NOTE: Do not rotate the crankshaft during inspection.
5. Remove the lower block and bearing half again, and measure the widest part of the plastigage. Main Bearing-to-Journal Oil Clearance No. 1, 2, 4, 5 Journals: Standard (New): 0.017 - 0.041 mm (0.0007 - 0.0016 in.) Service Limit: 0.050 mm (0.0020 in.) No. 3 Journal: Standard (New): 0.025 - 0.049 mm (0.0010 - 0.0019 in.) Service Limit: 0.055 mm (0.0022 in.)
6. If the plastigage measures too wide or too narrow, remove the crankshaft, and 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.
7. If the plastigage shows the clearance is still incorrect, try the next larger or smaller bearing (the color listed above or below that one), and check again. If the proper clearance cannot be obtained by using the appropriate larger or smaller bearings, replace the crankshaft and start over.

Scheme 202

1. Numbers or letters or bars have been stamped on the end of the block as a code for the size of each of the five main journal bores. Write down the crank bore codes. If you can't read the codes because of accumulated dirt and dust, do not scrub them with a wire brush or scraper. Clean them only with solvent or detergent.

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Scheme 204

1. 2. The main journal codes are stamped on the crankshaft.
2. 3. Use the crank bore codes and crank journal codes to select the appropriate replacement 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.

Scheme 205

1. Remove the oil pump (see «OIL PUMP REMOVAL»(ref-218779-S09454865332006021000000) ).
2. Remove the baffle plate (see step 7 ).
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. Tightening Torque K20A3 Engine: 20 N.m (2.0 kgf.m, 14 lbf.ft) + 90° K20A2, K20Z1 Engines: 29 N.m (3.0 kgf.m, 22 lbf.ft) + 90° NOTE: Do not rotate the crankshaft during inspection.
7. Remove the rod cap and bearing half, and measure the widest part of the plastigage. Connecting Rod Bearing-to-Journal Oil Clearance K20A3 Engine: Standard (New): 0.020-0.050 mm (0.0008-0.0020 in.) Service Limit: 0.060 mm (0.0024 in.) K20A2, K20Z1 Engines: Standard (New): 0.033-0.061 mm (0.0013-0.0024 in.) Service Limit: 0.072 mm (0.0028 in.)
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 that 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.

See also:
• ENGINE INSTALLATION
• TRANSMISSION REMOVAL