Dodge Neon / Neon SRT-4. Manual — part 231
ROCKER ARM/HYDRAULIC LASH ADJUSTER
DESCRIPTION
SPECIFICATION
Metric
Standard
Rocker Arm
Inside Diameter
20.00-20.02
mm
0.787-0.788 in.
Rocker Arm
Shaft Clearance
0.016-0.054
mm
0.0006-0.0021
in.
Body Diameter
22.949-22.962
mm
0.9035-0.9040
in.
Plunger Travel
Minimum (Dry)
2.2 mm
0.087 in.
Dry Lash-Intake
1.00 mm
0.039 in.
Dry Lash-
Exhaust
1.40 mm
0.055 in.
Rocker Arm
Ratio
1.4:1
CYLINDER HEAD CAMSHAFT BEARING BORE
DIAMETER
DESCRIPTION
SPECIFICATION
Metric
Standard
Journal No.1
41.200-41.220
mm
1.622-1.6228 in.
Journal No.2
41.600-41.621
mm
1.637-1.638 in.
Journal No.3
42.0-42.021
mm
1.653-1.654 in.
Journal No.4
42.4-42.421
mm
1.669-1.670 in.
Journal No.5
42.8-42.821
mm
1.685-1.6858 in.
CAMSHAFT
DESCRIPTION
SPECIFICATION
Metric
Standard
Journal
Diameter No. 1
41.128-41.147
mm
1.619-1.6199 in.
Journal
Diameter No. 2
41.528-41.547
mm
1.634-1.635 in.
Journal
Diameter No. 3
41.928-41.947
mm
1.650-1.651 in.
Journal
Diameter No. 4
42.328-42.374
mm
1.666-1.668 in.
Journal
Diameter No. 5
42.728-42.747
mm
1.682-1.6829 in.
Bearing
Clearance-
Diametrical
0.053-0.093
mm
0.0021-0.0037
in.
Bearing
Clearance (Max.
Allowable)
0.12 mm
0.0047 in.
End Play
0.05-0.39 mm
0.002-0.015 in.
Lift (Zero Lash)
Intake
7.2 mm
0.283 in.
Exhaust
7.03 mm
0.277 in.
Intake Valve
Timing*
Closes (ABDC)
41.1°
Opens (ATDC)
13.9°
Duration
207.2°
Exhaust Valve
Timing*
Closes (ATDC)
5.4°
Opens (BBDC)
43.7°
Duration
229.1°
Valve Overlap
0°
*All readings in crankshaft degrees, at 0.5 mm (0.019
in.) of valve lift.
CYLINDER HEAD
DESCRIPTION
SPECIFICATION
Metric
Standard
Material
Cast Aluminum
Gasket
Thickness
(Compressed)
1.15 mm
0.045 in.
9 - 18
ENGINE 2.0L SOHC
PL/SRT-4
ENGINE 2.0L SOHC (Continued)
VALVE SEAT
DESCRIPTION
SPECIFICATION
Metric
Standard
Angle
45°
Seat Diameter-
Intake
33 mm
1.299 in.
Seat Diameter-
Exhaust
28 mm
1.102 in.
Runout (Max.)
0.05 mm
0.002 in.
Valve Seat
Width-Intake
and Exhaust
0.9-1.3 mm
0.035-0.051 in.
Service
Limit-Intake
2.0 mm
0.079 in.
Service
Limit-Exhaust
2.5 mm
0.098 in.
VALVE GUIDE
DESCRIPTION
SPECIFICATION
Metric
Standard
Diameter I.D.
5.975-6.000
mm
0.235-0.236 in.
Guide Bore
Diameter
11.0-11.02 mm
0.4330-0.4338
in.
Guide Height
(spring seat to
guide tip)
13.25-13.75
mm
0.521-0.541 in.
VALVES
DESCRIPTION
SPECIFICATION
Metric
Standard
Face Angle-
Intake and
Exhaust
45-45.5°
Head Diameter-
Intake
32.12-33.37
mm
1.303-1.313 in.
Head Diameter-
Exhaust
28.57-28.83
mm
1.124-1.135 in.
Valve Length
(Overall)
-Intake
114.39-114.89
mm
4.503-4.523 in.
-Exhaust
116.94-117.44
mm
4.604-4.623 in.
Valve Stem
Diameter
-Intake
5.934-5.952
mm
0.2337-0.2344
in.
-Exhaust
5.906-5.924
mm
0.2326-0.2333
in.
VALVE MARGIN
DESCRIPTION
SPECIFICATION
Metric
Standard
Intake
1.15-1.48 mm
0.0452-0.0583
in.
Service Limit
0.79 mm
0.0312 in.
Exhaust
1.475-1.805
mm
0.058-0.071 in.
Service Limit
1.19 mm
0.0469 in.
VALVE STEM TIP HEIGHT
DESCRIPTION
SPECIFICATION
Metric
Standard
Intake
44.71-45.77
mm
1.76-1.80 in.
Exhaust
43.51-44.57
mm
1.71-1.75 in.
PL/SRT-4
ENGINE 2.0L SOHC
9 - 19
ENGINE 2.0L SOHC (Continued)
VALVE STEM TO GUIDE CLEARANCE
DESCRIPTION
SPECIFICATION
Metric
Standard
Intake
0.048-0.066
mm
0.0018-0.0025
in.
Max. Allowable
0.076 mm
0.003 in.
Exhaust
0.0736-0.094
mm
0.0029-0.0037
in.
Max. Allowable
0.101 mm
0.004 in.
VALVE SPRINGS
DESCRIPTION
SPECIFICATION
Metric
Standard
Free Length
(Approx.)
46.75 mm
1.84 in.
Nominal Force
(Valve Closed)
331 N @ 39.8
mm
70 lbs. @ 1.57
in.
Nominal Force
(Valve Open)
711 N @ 32.6
mm
160 lbs. @ 1.28
in.
Installed Height
40.18 mm
1.580 in.
OIL PUMP
DESCRIPTION
SPECIFICATION
Metric
Standard
Clearance Over
Rotors (Max.)
0.10 mm
0.004 in.
Cover
Out-of-Flat
(Max.)
0.076 mm
0.003 in.
Inner Rotor
Thickness (Min.)
7.64 mm
0.301 in.
Outer Rotor
Thickness (Min.)
7.64 mm
0.301 in.
Outer Rotor
Clearance
(Max.)
0.039 mm
0.015 in.
Outer Rotor
Diameter (Min.)
79.95 mm
3.148 in.
Tip Clearance
Between Rotors
(Max.)
0.20 mm
0.008 in.
Oil pressure
Relief
Spring-Free
Length (approx.)
60.7 mm
2.39 in.
OIL PRESSURE
DESCRIPTION
SPECIFICATION
Metric
Standard
At Curb Idle
Speed*
25 kPa
4 psi
At 3000 rpm
170-550 kPa
25-80 psi
CAUTION:
*If pressure is ZERO at curb idle, DO NOT run engine
at 3000 rpm.
9 - 20
ENGINE 2.0L SOHC
PL/SRT-4
ENGINE 2.0L SOHC (Continued)
TORQUE
DESCRIPTION
N·m
Ft.
Lbs.
In.
Lbs.
Camshaft Sensor-Bolts
(Refer to 8 -
ELECTRICAL/IGNITION
CONTROL -
SPECIFICATIONS)
Camshaft Sprocket-Bolt
115
85
-
Connecting Rod
Cap-Bolts
27 +
1
⁄
4
turn
20
+
1
⁄
4
turn
-
Structural Collar-Bolts
(Refer to 9 - ENGINE/
ENGINE BLOCK/
STRUCTURAL COVER -
INSTALLATION)
Crankshaft Main Bearing
Cap/Bedplate
-M8 Bolts
34
25
-
-M11 Bolts
81
60
-
Crankshaft Damper
136
100
-
Crankshaft Target Ring
13
-
110
Cylinder Head-Bolts
(Refer to 9 - ENGINE/
CYLINDER HEAD -
INSTALLATION)
Cylinder Head Cover-
Bolts
12
-
105
Engine Mount Bracket
Right-Bolts
61
45
-
Engine Mounting
Refer to Procedure
Exhaust Manifold to
Cylinder Head-Bolts
23
-
200
Exhaust Manifold Support
Bracket (Federal and
LEV)
-M8 Nut
28
-
250
-M10 Bolt
61
45
-
Exhaust Manifold Support
Bracket (ULEV)
54
40
-
Engine Torque Strut
Bracket to Engine-Bolts
61
45
-
Flex Plate to Crankshaft
95
70
-
Intake Manifold-Bolts
12
-
105
Powertrain Bending
Strut-Front
-Long Bolts
101
75
-
-Short Bolts
61
45
-
Oil Filter Adaptor
80
60
-
DESCRIPTION
N·m
Ft.
Lbs.
In.
Lbs.
Oil Filter
11
8
-
Oil Pan—Bolts
12
-
105
Oil Pan Drain—Plug
27
20
-
Oil Pump to Block
28
-
250
Oil Pump Cover
Plate-Bolts
12
-
105
Oil Pump Pick-up
Tube-Bolt
28
-
250
Oil Pump Relief
Valve-Cap
41
30
-
PCV Valve
5.6
-
50
Rocker Arm Shaft-Bolts
28
-
250
Spark Plugs
(Refer to 8 -
ELECTRICAL/IGNITION
CONTROL -
SPECIFICATIONS)
Timing Belt Cover-Bolts
12
-
105
Timing Belt Tensioner
Bracket-Mounting Bolts
31
23
-
Timing Belt Tensioner
Lock Nut
30
22
-
Water Pump-Bolts
(Refer to 7 - COOLING -
SPECIFICATIONS)
PL/SRT-4
ENGINE 2.0L SOHC
9 - 21
ENGINE 2.0L SOHC (Continued)
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