Acura CSX. Manual — part 5
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SNR9A00000000000000NDAT01
Engine Electrical
Engine Assembly
Item
Measurement
Qualification
Standard or New
Service Limit
Item
Measurement
Qualification
Standard or New
2-2
Standards and Service Limits
Ignition coil
Rated voltage
12 V
Firing order
1
3
4
2
Spark plug
Type (K20Z2)
DENSO: SKJ20DR-M11
Type (K20Z3)
DENSO: SK22PR-M11S
Gap
1.0
1.1 mm (0.039
0.043 in.)
Ignition timing
At idle
Check the
mark
M/T (in neutral),
A/T (in N or P)
8
2 ° BTDC
Drive belt
Tension
Auto-tensioner
Alternator
Output
At 13.5 V and
normal engine
temperature
105 A
Coil (rotor) resistance
20 °C (68 °F)
3.2
4.0
Slip ring O.D.
14.4 mm (0.57 in.)
14.0 mm (0.55 in.)
Brush length
10.5 mm (0.41 in.)
1.5 mm (0.06 in.)
Brush spring tension
3.2 N (0.33 kgf, 0.7 lbf)
Starter
Output
1.6 kW
Commutator mica depth
0.40
0.50 mm (0.016
0.020 in.)
0.15 mm (0.006 in.)
Commutator runout
0.02 mm (0.0008 in.) max.
0.05 mm (0.002 in.)
Commutator O.D.
28.0
28.1 mm (1.102
1.106 in.)
27.5 mm (1.083 in.)
Brush length
11.1
11.5 mm (0.44
0.45 in.)
4.3 mm (0.17 in.)
Compression
Pressure
Check the engine with the starter
cranking
Minimum
930 kPa (9.5 kgf/cm , 135 psi)
Maximum
variation
200 kPa (2.0 kgf/cm , 28 psi)
2
2
red
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Cylinder Head
Item
Measurement
Qualification
Standard or New
Service Limit
2-3
Head
Warpage
0.05 mm (0.002 in.)
Height
103.95
104.05 mm (4.093
4.096 in.)
Camshaft
End play
0.05
0.20 mm (0.002
0.008 in.)
0.4 mm (0.02 in.)
Camshaft-to-holder oil clearance
No. 1 journal
0.030
0.069 mm (0.001
0.003 in.)
0.15 mm (0.006 in.)
No. 2, 3, 4, 5
journals
0.060
0.099 mm (0.002
0.004 in.)
0.15 mm (0.006 in.)
Total runout
0.03 mm (0.001 in.) max.
0.04 mm (0.002 in.)
Cam lobe height (K20Z2)
Intake (primary)
34.263 mm (1.3489 in.)
Intake
(secondary)
29.638 mm (1.1668 in.)
Exhaust
34.092 mm (1.3422 in.)
Cam lobe height (K20Z3)
Intake (primary)
32.791 mm (1.2910 in.)
Intake (mid)
35.534 mm (1.3990 in.)
Intake
(secondary)
32.678 mm (1.2865 in.)
Exhaust
(primary)
32.772 mm (1.2902 in.)
Exhaust (mid)
34.768 mm (1.3688 in.)
Exhaust
(secondary)
32.661 mm (1.2859 in.)
Valve
Clearance (cold)
(K20Z2)
Intake
0.21
0.25 mm (0.008
0.010 in.)
Exhaust
0.28
0.32 mm (0.011
0.013 in.)
Clearance (cold)
(K20Z3)
Intake
0.21
0.25 mm (0.008
0.010 in.)
Exhaust
0.25
0.29 mm (0.010
0.011 in.)
Stem O.D.
Intake
5.475
5.485 mm (0.2156
0.2159 in.)
5.445 mm (0.214 in.)
Exhaust
5.450
5.460 mm (0.2146
0.2150 in.)
5.420 mm (0.213 in.)
Stem-to-guide clearance
Intake
0.030
0.055 mm (0.0012
0.0022 in.)
0.08 mm (0.003 in.)
Exhaust
0.055
0.080 mm (0.0022
0.0031 in.)
0.11 mm (0.004 in.)
Valve seat
Width
Intake
1.25
1.55 mm (0.049
0.061 in.)
2.00 mm (0.079 in.)
Exhaust
1.25
1.55 mm (0.049
0.061 in.)
2.00 mm (0.079 in.)
Stem installed height
Intake
44.0
44.5 mm (1.73
1.75 in.)
44.7 mm (1.76 in.)
Exhaust
44.1
44.6 mm (1.74
1.76 in.)
44.8 mm (1.76 in.)
Valve spring
Free length
Intake
NIPPON HATSUJO:
47.57 mm (1.8728 in.)
CHUO HATSUJO:
47.58 mm (1.8732 in.)
Exhaust
NIPPON HATSUJO:
49.64 mm (1.954 in.)
CHUO HATSUJO:
49.63 mm (1.954 in.)
Valve guide
I.D.
Intake
5.515
5.530 mm (0.2171
0.2177 in.)
5.55 mm (0.219 in.)
Exhaust
5.515
5.530 mm (0.2171
0.2177 in.)
5.55 mm (0.219 in.)
Installed height
Intake
15.2
16.2 mm (0.598
0.638 in.)
Exhaust
15.5
16.5 mm (0.610
0.650 in.)
Rocker arm
Arm-to-shaft clearance (K20Z2)
Intake
0.025
0.052 mm (0.0010
0.0020 in.)
0.08 mm (0.003 in.)
Exhaust
0.018
0.056 mm (0.0007
0.0022 in.)
0.08 mm (0.003 in.)
Arm-to-shaft clearance (K20Z3)
Intake
0.025
0.052 mm (0.0010
0.0020 in.)
0.08 mm (0.003 in.)
Exhaust
0.025
0.052 mm (0.0010
0.0020 in.)
0.08 mm (0.003 in.)
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Engine Block
Item
Measurement
Qualification
Standard or New
Service Limit
2-4
Standards and Service Limits
Block
Warpage of deck
0.07 mm (0.003 in.) max.
0.10 mm (0.004 in.)
Bore diameter
A or l
86.010
86.020 mm (3.3862
3.3866 in.) 86.070 mm (3.3886 in.)
B or II
86.000
86.010 mm (3.3858
3.3862 in.) 86.070 mm (3.3886 in.)
Bore taper
0.05 mm (0.002 in.)
Reboring limit
0.25 mm (0.01 in.)
Piston
Skirt O.D. at 11 mm (0.4 in.) from
bottom of skirt
No letter or A
85.980
85.990 mm (3.3850
3.3854 in.) 85.930 mm (3.3831 in.)
Letter B
85.970
85.980 mm (3.3846
3.3850 in.) 85.920 mm (3.3827 in.)
Clearance in cylinder
0.020
0.040 mm (0.0008
0.0016 in.)
0.05 mm (0.002 in.)
Piston ring
Ring-to-groove clearance (K20Z2)
Top
0.035
0.060 mm (0.0014
0.0024 in.)
0.13 mm (0.005 in.)
Second
0.030
0.055 mm (0.0012
0.0022 in.)
0.13 mm (0.005 in.)
Ring-to-groove clearance (K20Z3)
Top
0.045
0.070 mm (0.0018
0.0028 in.)
0.13 mm (0.005 in.)
Second
0.040
0.065 mm (0.0016
0.0026 in.)
0.13 mm (0.005 in.)
Ring end gap (K20Z2)
Top
0.20
0.35 mm (0.008
0.014 in.)
0.60 mm (0.024 in.)
Second
0.40
0.55 mm (0.016
0.022 in.)
0.70 mm (0.028 in.)
Oil
0.20
0.70 mm (0.008
0.028 in.)
0.80 mm (0.031 in.)
Ring end gap (K20Z3)
Top
0.20
0.35 mm (0.008
0.014 in.)
0.60 mm (0.024 in.)
Second
0.50
0.65 mm (0.020
0.026 in.)
0.75 mm (0.030 in.)
Oil
0.20
0.70 mm (0.008
0.028 in.)
0.80 mm (0.031 in.)
Piston pin
O.D.
21.961
21.965 mm (0.8646
0.8648 in.) 21.953 mm (0.8643 in.)
Pin-to-piston clearance
0.005 to
0.002 mm
(
0.00020 to
0.00008 in.)
0.005 mm (0.0002 in.)
Connecting rod
Pin-to-rod clearance
0.005
0.015 mm (0.0002
0.0006 in.)
0.02 mm (0.0008 in.)
Small-end bore diameter
21.970
21.976 mm (0.8650
0.8652 in.)
Large-end bore diameter (K20Z2)
48.0 mm (1.89 in.)
Large-end bore diameter (K20Z3)
51.0 mm (2.01 in.)
End play
0.15
0.30 mm (0.006
0.012 in.)
0.40 mm (0.016 in.)
Crankshaft
Main journal diameter
No. 1, 2, 4, 5
journals
54.984
55.008 mm (2.1648
2.1657 in.)
No. 3 journal
54.976
55.000 mm (2.1644
2.1654 in.)
Rod journal diameter (K20Z2)
44.976
45.000 mm (1.7707
1.7717 in.)
Rod journal diameter (K20Z3)
44.976
45.000 mm (1.7707
1.7717 in.)
Rod/main journal taper
0.005 mm (0.0002 in.) max.
0.010 mm (0.0004 in.)
Rod/main journal out-of-round
0.005 mm (0.0002 in.) max.
0.010 mm (0.0004 in.)
End play
0.10
0.35 mm (0.004
0.014 in.)
0.45 mm (0.018 in.)
Runout
0.03 mm (0.0012 in.) max.
0.04 mm (0.0016 in.)
Crankshaft
bearing
Main bearing-to-journal oil clearance
No. 1, 2, 4, 5
journals
0.017
0.041 mm (0.0007
0.0016 in.)
0.050 mm (0.0020 in.)
No. 3 journal
0.025
0.049 mm (0.0010
0.0019 in.)
0.055 mm (0.0022 in.)
Connecting rod bearing-to-journal oil
clearance (K20Z2)
0.020
0.050 mm (0.0008
0.0020 in.)
0.060 mm (0.0024 in.)
Connecting rod bearing-to-journal oil
clearance (K20Z3)
0.032
0.066 mm (0.0013
0.0026 in.)
0.077 mm (0.0030 in.)
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Engine Lubrication
Item
Measurement
Qualification
Standard or New
Service Limit
2-5
Engine oil
Capacity (K20Z2)
Engine overhaul
5.3 L (5.6 US qt)
Oil change
including filter
4.2 L (4.4 US qt)
Oil change
without filter
4.0 L (4.2 US qt)
Capacity (K20Z3)
Engine overhaul
5.5 L (5.8 US qt)
Oil change
including filter
4.4 L (4.6 US qt)
Oil change
without filter
4.2 L (4.4 US qt)
Oil pump
Inner-to-outer rotor clearance
0.06
0.16 mm (0.002
0.006 in.)
0.20 mm (0.008 in.)
Pump housing-to-outer rotor clearance
0.15
0.21 mm (0.006
0.008 in.)
0.23 mm (0.009 in.)
Pump housing-to-rotor axial clearance
0.035
0.070 mm (0.0014
0.0028 in.)
0.12 mm (0.005 in.)
Balancer shafts, journal diameter
No. 1 journal,
front shaft
19.938
19.950 mm (0.7850
0.7854 in.) 19.92 mm (0.784 in.)
No. 1 journal,
rear shaft
23.938
23.950 mm (0.9424
0.9429 in.) 23.92 mm (0.942 in.)
No. 2 journal,
front and rear
shaft
32.949
32.961 mm (1.2972
1.2977 in.) 32.93 mm (1.296 in.)
Balancer shafts, journal taper
0.005 mm (0.0002 in.) max.
Balancer shafts, end play
Front
0.063
0.108 mm (0.0025
0.0043 in.)
0.14 mm (0.0055 in.)
Rear
0.063
0.108 mm (0.0025
0.0043 in.)
0.14 mm (0.0055 in.)
Balancer shafts, shaft-to-bearing
clearance
No. 1 journal,
front shaft
0.050
0.082 mm (0.0020
0.0032 in.)
0.10 mm (0.004 in.)
No. 1 journal,
rear shaft
0.050
0.082 mm (0.0020
0.0032 in.)
0.10 mm (0.004 in.)
No. 2 journal,
front and rear
shaft
0.060
0.120 mm (0.0024
0.0047 in.)
0.15 mm (0.006 in.)
Balancer shaft bearings, I.D.
No. 1 journal,
front shaft
20.000
20.020 mm (0.7874
0.7882 in.) 20.03 mm (0.789 in.)
No. 1 journal,
rear shaft
24.000
24.020 mm (0.9449
0.9457 in.) 24.03 mm (0.946 in.)
No. 2 journal,
front and rear
shaft
33.021
33.069 mm (1.3000
1.3019 in.) 33.09 mm (1.303 in.)
Relief valve, oil pressure with oil
temperature at 80 °C (176 °F)
At idle
70 kPa (0.7 kgf/cm , 10 psi) min.
At 3,000 rpm
300 kPa (3.1 kgf/cm , 44 psi) min.
2
2
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