Dodge Ram Truck 1500-2500-3500. Manual - part 1380

PISTONS

DESCRIPTION

SPECIFICATION

Metric

Standard

Piston Size

102.314-102.332 mm.

4.0281-4.0288 in.

Clearance at Top of Skirt (12 mm

from bottom)

0.025-0.055 mm.

0.0010-0.0022 in.

Land Clearance (Diametrical)

0.771-0.808 mm

-0.036–0.042 in.

Weight

429-439 grams

15.13-15.49 oz.

Piston Length

57.0 mm

2.24 in.

Piston Pin Boar Diameter

23.940-23.978 mm

0.9425-0.9440 in.

Piston Pin Boar Offset

0.800 mm

0.031 in.

Piston Ring Groove Depth No.1

91.55-91.88 mm

3.604-3.614 in.

Piston Ring Groove Depth No.2

90.75-91.00 mm

3.573-3.583 in.

Piston Ring Groove Depth No.3

92.53-92.79 mm

3.643-3.653 in.

PISTON PINS

DESCRIPTION

SPECIFICATION

Metric

Standard

Clearance in Piston

0.009-0.022 mm

0.0004-0.0009 in.

Clearance in Connecting Rod

0.017-0.061 mm

0.0007-0.0024 in.

Diameter

23.995-24.000 mm

0.9447-0.9449 in.

Length

73.35 mm

2.888 in.

End Play

None

PISTON RING

DESCRIPTION

SPECIFICATION

Metric

Standard

Piston Ring End Gap

Top Compression Ring

0.20-0.36 mm

0.008-0.014 in.

Second Compression Ring

0.56-0.79 mm

0.022-0.031 in.

Oil Control (Steel Rails)

0.25-0.76 mm

0.010-0.030 in.

Wear Limit-Top Compression Ring

0.63 mm

0.025 in.

Wear Limit-2nd Compression Ring

1.40 mm

0.055 in.

Wear Limit-Oil Control Steel Rails

1.64 mm

0.065 in.

Piston Ring Side Clearance

Top and 2nd Compression Ring

0.040-0.085 mm

0.0016-0.0033 in.

Oil Ring (Steel Ring)

0.046-0.201 mm

0.0018-0.0079 in.

Wear Limit- Top and 2nd Ring

0.10 mm

0.004 in.

Wear Limit Oil Ring Pack

0.216 mm

0.0085 in.

Piston Ring Width

Compression Rings

1.407-1.490 mm

0.0579-0.0586 in.

Oil Ring (Steel Rails)

0.447-0.473 mm

0.0176-0.0186 in.

9 - 2442

ENGINE - 8.3L - SERVICE INFORMATION

DR/DH

CAMSHAFT

DESCRIPTION

SPECIFICATION

Metric

Standard

Lift

8.13 mm

0.320 in.

Journal Diameter 1-6

53.09-53.11 mm

2.090-2.091 in.

Boar Diameter No.1-6

53.16-53.19 mm

2.093-2.094 in.

Diametrical Clearance

0.051-0.102 mm

0.002-0.004 in.

Max. Allowable

0.127 mm

0.005 in.

End Play

0.127-0.381 mm

0.005-0.015 in.

Valve Timing-Exhaust Valve

Closes (ATC)

36.5°

Opens (BBC)

88.5°

Duration

305.0°

Valve Timing-Intake Valve

Closes (BTDC)

86.5°

Opens

23.5°

Duration

297.0°

Valve Overlap

60.0°

HYDRAULIC TAPPETS

DESCRIPTION

SPECIFICATION

Metric

Standard

Body Diameter

22.949-22.962 mm

0.9035-0.9040 in.

Clearance in Block

0.013-0.043 mm

0.0005-0.0017 in.

Plunger Travel (Dry)

4.24 mm

0.167 in.

Push Rod Length (Overall)

193.22-193.73 mm

7.607-7.627 in.

CYLINDER HEAD

DESCRIPTION

SPECIFICATION

Metric

Standard

Gasket Thickness (Compressed)

1.35 mm

0.053 in.

CYLINDER HEAD VALVE SEAT

DESCRIPTION

SPECIFICATION

Metric

Standard

Seat Angle

44°-44.5°

Runout (Max.)

0.038 mm

0.002 in.

Width (Finish) Intake and Exhaust

1.02-1.52 mm

0.040-0.060 in.

Guide Bore Diameter (Std.)

7.95-7.98 mm

0.313-0.314 in.

DR/DH

ENGINE - 8.3L - SERVICE INFORMATION

9 - 2443

VALVES

DESCRIPTION

SPECIFICATION

Metric

Standard

Face Angle

45-45.5°

Back Cut Angle

25°-29°

Stem Diameter-Intake and Exhaust

7.90-7.92 mm

0.331-0.312 in.

Head Diameter-Intake

50.67-50.93 mm

1.995-2.005 in.

Head Diameter-Exhaust

40.01-40.26 mm

1.575-1.585 in.

Length-Intake (Over All)

145.69-146.33 mm

5.736-5.761 in.

Length-Exhaust (Over All)

146.23-146.86 mm

5.757-5.782 in.

Valve Margin-Intake

1.30 mm

0.051 in.

Valve Margin-Exhaust

2.03 mm

0.080 in.

Lift-Intake (Zero Lash

14.06 mm

0.554 in.

Lift-Exhaust (Zero Lash)

14.06 mm

0.554 in.

Valve Stem Tip Height

52.96 mm

2.085 in.

Stem-to-Guide Clearance-Intake

and Exhaust

0.025-0.076 mm

0.001-0.003 in.

Max. Allowable-Intake (Rocking

Method)

0.50 mm

0.020 in.

Max. Allowable-Exhaust (Rocking

Method)

0.70 mm

0.027 in.

VALVE SPRING

DESCRIPTION

SPECIFICATION

Metric

Standard

Free Length - Spring

55.0 mm

2.165 in.

Free Length - Spring Damper

47 mm

1.850 in.

Spring Tension (Valve Closed)

534 ± 20 N @ 44.5 mm

120 ± 4.5 lbs. @ 1.750 in.

Spring Tension (Valve Open)

1245 ± 40 N @ 30.6 mm

280 ± 9.0 lbs. @ 1.207 in.

Number of Coils - Spring

7.25 Right Hand Twist

Number of Coils - Spring Damper

3.6 to 4.0 Left Hand Twist

Wire Diameter (Ovate)

4.2 x 5.3 mm

0.166 x 0.208 in.

Installed Height (Spring Seat to

Bottom of Retainer)

44.5 mm

1.750 in.

LUBRICATION

DESCRIPTION

SPECIFICATION

Metric

Standard

At Curb Idle Speed* (Minimum with

engine at operating temperature)

68.9 kPa

10 psi

At 3000 RPM

310-517 kPa

45-75 psi

CAUTION:

*If pressure is ZERO at curb idle, DO NOT run engine at 3000 rpm.

9 - 2444

ENGINE - 8.3L - SERVICE INFORMATION

DR/DH

OIL PUMP

DESCRIPTION

SPECIFICATION

Metric

Standard

Clearance Over Rotors (Max.)

0.077 mm

0.003 in.

Cover Out-Of-Flat (Max.)

0.076 mm

0.003 in.

Inner Rotor Thickness (Min.)

18.92 mm

0.744 in.

Clearance (Max.)

0.19 mm

0.007 in.

Diameter (Min.)

82.45 mm

3.246 in.

Thickness (Min.)

18.92 mm

0.744 in.

Tip Clearance Between Rotors

(Max)

0.150 mm

0.0068 in.

TORQUE

DESCRIPTION

N·m

Ft. Lbs.

In. Lbs.

Bolts-A/C Compressor Mounting

23

-

200

Bolts-A/C Compressor Bracket

23

-

200

Bolt-Camshaft Position Sensor

11

-

95

Bolts-Camshaft Sprocket

23

-

200

Bolts-Camshaft Thrust Plate

24

-

210

Bolts-Connecting Rod Cap

68

50

-

Bolts-Crankshaft Main Bearing Cap

(Refer to CRANKSHAFT -

INSTALLATION)

Nuts-Crankshaft Oil Scraper

23

-

200

Bolts-Crankshaft Pulley

23

-

200

Bolt-Crankshaft Vibration Damper

176

130

-

Bolts-Cylinder Head

(Refer to CYLINDER HEAD -

INSTALLATION)

Bolts/Studs-Cylinder Head Cover

11

-

95

Exhaust Manifold

23

-

200

Exhaust Pipe to Exhaust Manifold

34

25

-

Bolts-Engine Mount Bracket-to-Block

41

30

-

Nuts-Engine Mount Insulator

102

75

-

Bolts-Flywheel to Crankshaft

75

55

-

Bolts-Generator Mounting

41

30

-

Bolts-Intake Manifold

11

-

95

Bolts-Oil Cooler

5

-

40

Oil Cooler Line Fitting

68

50

-

Bolts-Oil Pan

1/4–20

11

-

95

5/16–18

23

-

200

Plug-Oil Pan Drain

34

25

-

Plug-Oil Pressure Relief Valve

34

25

-

Bolts-Oil Pump Cover

23

-

200

Oil Pump Pick-up Tube

Bolt 1/4–20

11

-

95

DR/DH

ENGINE - 8.3L - SERVICE INFORMATION

9 - 2445