2006 ACURA CSX engine oil

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Piston Ring End-Gap
Top Ring:
Standard (New): 0.20 0.35 mm
(0.008 0.014 in.)
Service Limit: 0.60 mm (0.024 in.)
Second Ring:
K20Z2 engine:
Standard (New): 0.40 0.55 mm (0.016 0.022 in.)
Service Limit: 0.70 mm (0.028 in.)
K20Z3 engine:
Standard (New): 0.50 0.65 mm (0.020 0.026 in.)
Service Limit: 0.75 mm (0.030 in.)
Oil Ring:
Standard (New): 0.20 0.70 mm (0.008 0.028 in.)
Service Limit: 0.80 mm (0.031 in.)
7-22 Engine Block
Piston Ring Replacement (cont’d)
A
B 15 20 mm (0.6 0.8 in.) A
B
K20Z2 engine:
A
B
K20Z3 engine:
BTop Ring (Standard):
A: 3.1 mm (0.12 in.)
B: 1.2 mm (0.05 in.)
Second Ring (Standard):
A: 3.4 mm (0.13 in.)
B: 1.2 mm (0.05 in.)
Piston Ring Dimensions
A A
BC
C
4. Using a piston that has its rings removed, push a
new ring (A) into the cylinder bore 15 20 mm
(0.6 0.8 in.) from the bottom.
5. Measure the piston ring end-gap (B) with a feeler gauge:
 If the gap is too small, check to see if you have the proper rings for your engine.
 If the gap is too large, recheck the cylinder bore diameter against the wear limits (see page 7-16).
If the bore is beyond the service limit, the engine
block must be rebored. 6. Install the top ring and the second ring as shown.
The top ring (A) has a 1R mark, and the second ring
(B) has a 2R mark. The manufacturing marks (C)
must be facing upward.
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Top Ring Clearance
K20Z2 engine:
Standard (New): 0.035 0.060 mm
(0.0014 0.0024 in.)
Service Limit: 0.13 mm (0.005 in.)
K20Z3 engine:
Standard (New): 0.045 0.070 mm (0.0018 0.0028 in.)
Service Limit: 0.13 mm (0.005 in.)
Second Ring Clearance
K20Z2 engine:
Standard (New): 0.030 0.055 mm (0.0012 0.0022 in.)
Service Limit: 0.13 mm (0.005 in.)
K20Z3 engine:
Standard (New): 0.040 0.065 mm (0.0016 0.0026 in.)
Service Limit: 0.13 mm (0.005 in.)
If the Crankshaft is Already Installed
7-237-23
Piston Installation
OIL RING GAP About 90 °
SECOND RING GAP
PISTON PIN OIL RING GAPAbout 45 °
TOP RING GAP and
SPACER RING GAP A
A
B
7. After installing a new set of rings, measure the
ring-to-groove clearances:
8. Rotate the rings in their grooves to make sure they do not bind.
9. Position the ring end gaps as shown: 1. Set the crankshaft to bottom dead center (BDC) for
each cylinder as its piston is installed.
2. Remove the connecting rod caps, then install the ring compressor. Check that the bearing is securely
in place.
3. Apply new engine oil to the piston, inside of the ring compressor, and the cylinder bore, then attach
the ring compressor to the piston/connecting rod
assembly.
4. Position the mark (A) to face the cam chain side of the engine block.
5. Position the piston/connecting rod assembly in the cylinder, and tap it in using the wooden handle of a
hammer (A).
Push down on the ring compressor (B) to prevent
the rings from expanding before entering the
cylinder bore.
6. Stop after the ring compressor pops free, and check the connecting rod-to-rod journal alignment
before pushing the piston into place.
(cont’d)
This illustration shows K20Z2 engine.
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Top Ring Clearance
K20Z2 engine:
Standard (New): 0.035 0.060 mm
(0.0014 0.0024 in.)
Service Limit: 0.13 mm (0.005 in.)
K20Z3 engine:
Standard (New): 0.045 0.070 mm (0.0018 0.0028 in.)
Service Limit: 0.13 mm (0.005 in.)
Second Ring Clearance
K20Z2 engine:
Standard (New): 0.030 0.055 mm (0.0012 0.0022 in.)
Service Limit: 0.13 mm (0.005 in.)
K20Z3 engine:
Standard (New): 0.040 0.065 mm (0.0016 0.0026 in.)
Service Limit: 0.13 mm (0.005 in.)
If the Crankshaft is Already Installed
7-237-23
Piston Installation
OIL RING GAP About 90 °
SECOND RING GAP
PISTON PIN OIL RING GAPAbout 45 °
TOP RING GAP and
SPACER RING GAP A
A
B
7. After installing a new set of rings, measure the
ring-to-groove clearances:
8. Rotate the rings in their grooves to make sure they do not bind.
9. Position the ring end gaps as shown: 1. Set the crankshaft to bottom dead center (BDC) for
each cylinder as its piston is installed.
2. Remove the connecting rod caps, then install the ring compressor. Check that the bearing is securely
in place.
3. Apply new engine oil to the piston, inside of the ring compressor, and the cylinder bore, then attach
the ring compressor to the piston/connecting rod
assembly.
4. Position the mark (A) to face the cam chain side of the engine block.
5. Position the piston/connecting rod assembly in the cylinder, and tap it in using the wooden handle of a
hammer (A).
Push down on the ring compressor (B) to prevent
the rings from expanding before entering the
cylinder bore.
6. Stop after the ring compressor pops free, and check the connecting rod-to-rod journal alignment
before pushing the piston into place.
(cont’d)
This illustration shows K20Z2 engine.
08/08/21 14:33:08 61SNR030_070_0023
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If the Crankshaft is Not Installed
7-24Engine Block
Piston Installation (cont’d)
90 °
A
A
B
7. Check the connecting rod bearing clearance with
plastigage (see page 7-8).
8. Inspect the connecting rod bolts (see page 7-25).
9. Install the rod caps with bearings. Tighten the bolts to 20 N·m (2.0 kgf·m, 14 lbf·ft) (K20Z2 engine) or
29 N·m (3.0 kgf·m, 22 lbf·ft) (K20Z3 engine).
NOTE: Apply new engine oil to the bolt threads and
flanges.
10. Tighten the connecting rod bolts an additional 90 °.
NOTE: Remove the connecting rod bolt if you
tightened it beyond the specified angle, and go
back to step 8 of the procedure. Do not loosen it
back to the specified angle. 1. Remove the connecting rod caps, then install the
ring compressor, and check that the bearing is
securely in place.
2. Apply new engine oil to the piston, inside of the ring compressor, and the cylinder bore, then attach
the ring compressor to the piston/connecting rod
assembly.
3. Position the mark (A) to face the cam chain side of the engine block.
4. Position the piston/connecting rod assembly in the cylinder, and tap it in using the wooden handle of a
hammer (A).
Push down on the ring compressor (B) to prevent
the rings from expanding before entering the
cylinder bore.
5. Position all pistons at top dead center (TDC).
This illustration shows K20Z2 engine.
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7-26Engine Block
Crankshaft Installation (cont’d)
B
A
90 °
4. Install the bearing halves in the engine block and the connecting rods.
5. Apply new engine oil to the main bearings and the rod bearings.
6. Hold the crankshaft so rod journal No. 2 and rod journal No. 3 are straight up, then lower the
crankshaft into the engine block.
7. Apply new engine oil to the thrust washer surfaces. Install the thrust washers (A) in the No. 4 journal of
the engine block.
8. Inspect the connecting rod bolts (see page 7-25).
9. Apply new engine oil to the threads of the connecting rod bolts.
10. Seat the rod journals into connecting rod No. 1 and connecting rod No. 4. Line up the mark (B) on the
connecting rod and the cap, then install the caps
and the bolts finger-tight.
11. 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 cap, then install the caps and the bolts
finger-tight. 12. Tighten the connecting rod bolts to 20 N·m
(2.0 kgf·m, 14 lbf·ft) (K20Z2 engine) or 29 N·m
(3.0 kgf·m, 22 lbf·ft) (K20Z3 engine).
13. Tighten the connecting rod bolts an additional 90 °. NOTE: Remove the connecting rod bolt if you
tightened it beyond the specified angle, and go
back to step 8 of the procedure. Do not loosen it
back to the specified angle.
14. Remove all of the old liquid gasket from the lower block mating surfaces, the bolts, and the bolt holes.
15. Clean, and dry the lower block mating surfaces.
16. Apply liquid gasket, P/N 08717-0004, 08718-0001, 08718-0003, or 08718-0009, evenly to the engine
block mating surface of the lower block, and to the
inside edge of the threaded bolt holes. Install the
component within 5 minutes of applying the liquid
gasket.
NOTE: If you apply liquid gasket P/N 08718-0012, the component must be install within 4 minutes.
 If too much time has passed after applying the liquid gasket, remove the old liquid gasket and
residue, then reapply new liquid gasket.
Apply liquid gasket
along the broken line.
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7-27
56 °
07ZAD-PNAA10007749-0010000
17. Install the main bearings, then put the lower block
on the engine block.
18. Apply new engine oil to the threads of the bearing cap bolts.
19. Tighten the bearing cap bolts, in sequence, to 29 N·m (3.0 kgf·m, 22 lbf·ft).
20. Tighten the bearing cap bolts an additional 56 °. 21. Tighten the 8 mm bolts, in sequence, to 22 N·m
(2.2 kgf·m, 16 lbf·ft).
22. Apply a light coat of new engine oil around the crankshaft oil seal.
23. Apply a light coat of new engine oil to the crankshaft and the lip of the crankshaft oil seal.
24. Use the driver and the oil seal driver attachment 96 to drive a new oil seal squarely into the engine
block to the specified installed height.
(cont’d)
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Oil Seal Installed Height: 0.2 1.2 mm
(0.001 0.047 in.)
7-28Engine Block
Crankshaft Installation (cont’d)
0.2 1.2 mm
(0.001 0.047 in.)
BA
6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
25. Measure the distance between the engine block (A) and the crankshaft oil seal (B).
26. Install the baffle plates. 27. Install the oil pump (see page 8-21).
28. Install the oil pan (see page 7-29).
29. Install the cylinder head (see page 6-62).
30. M/T model: Install the flywheel (see page 12-21),
the clutch disc (see page 12-23), and the pressure
plate (see page 12-23).
31. A/T model: Install the drive plate (see page 14-242).
32. Install the transmission:  Manual transmission (see page 13-14)
 Automatic transmission (see page 14-242)
33. Install the engine assembly (see page 5-13). NOTE: Whenever any crankshaft or connecting rod
bearing is replaced, it is necessary after
reassembly to run the engine at idle speed until it
reaches normal operating temperature, then
continue to running it for about 15 minutes.
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7-29
Oil Pan Installation
6x1.0mm
12 N·m
(1.2 kgf·m, 8.7 lbf·ft)
1. Remove all of the old liquid gasket from the oil pan mating surfaces, the bolts, and the bolt holes.
2. Clean, and dry the oil pan mating surfaces.
3. Apply liquid gasket, P/N 08717-0004, 08718-0001, 08718-0003, or 08718-0009, evenly to the lower
engine block mating surface, and to the inside edge
of the threaded bolt holes. Install the component
within 5 minutes of applying the liquid gasket.
NOTE: If you apply liquid gasket P/N 08718-0012, the component must be install within 4 minutes.
 If too much time has passed after applying the liquid gasket, remove the old liquid gasket and
residue, then reapply new liquid gasket.
4. Install the oil pan. 5. Tighten the bolts/nuts in three steps. In the final
step, tighten all bolts/nuts, in sequence, to 12 N·m
(1.2 kgf·m, 8.7 lbf·ft). Wipe off the excess liquid
gasket on the each side of crankshaft pulley and the
flywheel/drive plate.
NOTE: Wait at least 30 minutes before filling the engine with oil.
 Do not run the engine for at least 3 hours after installing the oil pan.
6. K20Z2 engine: Install the torque converter cover/ clutch cover.
(cont’d)
Apply liquid gasket
along the broken line.
08/08/21 14:33:11 61SNR030_070_0029
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