Chrysler Pacifica. Manual - part 693

CRANKSHAFT

DESCRIPTION

SPECIFICATION

Metric

Standard

Connecting Rod

Journal

Diameter

57.979-58.005

mm

2.2827-2.2837

in.

Main Bearing

Journal

Diameter

63.993-64.013

mm

2.5194-2.5202

in.

Journal

Out-of-Round

(Max.)

0.025 mm

0.001 in.

Journal Taper

(Max.)

0.025 mm

0.001 in

End Play

0.09-0.24 mm

0.0036-0.0095

in.

Wear Limit

0.381 mm

0.015 in.

Main Bearing

Diametrical

Clearance

1-2-3-4

0.011-0.055

mm

0.0005-0.0022

in.

Wear Limit

0.076 mm

0.003 in.

CONNECTING RODS

DESCRIPTION

SPECIFICATION

Metric

Standard

Bearing

Clearance

0.019-0.065

mm.

0.017-0.020 in.

Wear Limit

0.074 mm

0.003 in.

Side Clearance

0.13-0.32 mm

0.005-0.013 in.

Wear Limit

0.38 mm

0.015 in.

PISTONS

DESCRIPTION

SPECIFICATION

Metric

Standard

Piston Diameter

3.8L-Measured

33.01 mm (1.30

in) From Piston

Top

95.968-95.998

mm.

3.778-3.779 in.

Clearance in

Bore @ Size

Location (New)

-0.005-0.039

mm

-0.0002–0.0015

in.

Weight 3.8L

426 ± 5 grams

15.03 ± 0.1764

oz.

PISTON PINS

DESCRIPTION

SPECIFICATION

Metric

Standard

Type

Press Fit in Rod (Serviced as a

Assembly)

Clearance in

Piston @ 21C

(70°F)

0.006-0.019

mm

0.0002-0.0007
in.

Clearance in

Connecting Rod

Interference Fit

Diameter

22.87-22.88

mm

0.9007-0.9009
in.

Length 3.8L

71.25-71.75

mm

2.805-2.824 in.

CS

ENGINE 3.8L

9 - 127

ENGINE 3.8L (Continued)

PISTON RINGS

DESCRIPTION

SPECIFICATION

Metric

Standard

Ring End Gap

Top

Compression

Ring

0.18-0.38 mm

0.007-0.015 in.

Second

Compression

Ring

0.28-0.57 mm

0.011-0.022 in.

Oil Control

(Steel Rails)

0.23-0.78 mm

0.009-0.030 in.

Wear Limit-

Compression

Rings

1.0 mm

0.039 in.

Wear Limit-Oil

Control Steel

Rails

1.88 mm

0.074 in.

Ring Side
Clearance

Top
Compression
Ring 3.8L

0.030-0.069

mm

0.0012-0.0027

in.

Second

Compression

Ring 3.8L

0.041-0.085

mm

0.0016-0.0033

in.

Oil Ring (Steel

Ring)

0.039-0.200

mm

0.0015-0.0078

in.

Wear Limit- Top

Ring

0.10 mm

0.004 in.

Wear Limit-2nd

Ring

0.13 mm

0.005

Wear Limit Oil

Ring Pack

0.266 mm

0.009

Ring Width-Top

Compression

Ring 3.8L

1.175-1.190

mm

0.0462-0.0468

Ring Width-2nd

Compression

Ring 3.8L

1.46-1.49 mm

0.0575-0.058 in.

Ring Width-Oil

Ring (Steel

Rails) 3.8L

0.435-0.510

mm

0.017-0.020

CAMSHAFT

DESCRIPTION

SPECIFICATION

Metric

Standard

Journal

Diameter

#1

50.724-50.775

mm

1.997-1.999 in.

#2

50.317-50.368

mm

1.9809-1.9829

in.

#3

49.936-49.987

mm

1.9659-1.9679

in.

#4

49.530-49.581

mm

1.9499-1.9520

in.

Bearing

Clearance-

Diametrical

0.025-0.101

mm

0.001-0.004 in.

Bearing

Clearance

(Max.Allowable)

0.127 mm

0.005 in.

End Play

0.254-0.508

mm

0.010-0.020 in.

Camshaft

Bearing

Diameter

#1

50.800-50.825

1.9999-2.0009
in.

#2

50.393-50.419

mm

1.9839-1.9849

in.

#3

50.013-50.038

mm

1.9690-1.9699

in.

#4

49.606-49.632

mm

1.9529-1.954 in.

Exhaust Valve

Timing

Closes-3.8L

(ATDC)

-

18°

Opens-3.8L

(BBDC)

-

46°

Duration-3.8L

-

244°

Intake Valve

Timing

Closes-3.8L

(ABDC)

-

63°

Opens-3.8L

(ATDC)

-

1°

Duration-3.8L

-

242°

Valve Overlap-

3.8L

-

17°

9 - 128

ENGINE 3.8L

CS

ENGINE 3.8L (Continued)

HYDRAULIC LIFTER

DESCRIPTION

SPECIFICATION

Metric

Standard

Type

Hydraulic Roller

Outside

Diameter

22.949-22.962

mm

0.903-0.904 in.

Clearance in

Block

0.020-0.061

mm

0.0007-0.0024

in.

CYLINDER HEAD

DESCRIPTION

SPECIFICATION

Metric

Standard

Gasket

Thickness

(Compressed)

0.65-0.75 mm

0.0007-0.0024
in.

VALVES

DESCRIPTION

SPECIFICATION

Metric

Standard

Face Angle-

Intake

-

45-45.5°

Face Angle-

Exhaust

-

45-45.5°

Head Diameter-

Intake

47.87-48.13

mm

1.88-1.89 in.

Head Diameter-

Exhaust

35.37-35.63

mm

1.39-1.40 in.

Valve Lift (Zero

Lash)-Intake

and Exhaust-

3.8L

11.0 mm

0.433 in.

Valve Length-

Intake

125.84-126.6

mm

4.95-4.98 in.

Valve Length-

Exhaust

127.20-127.96

5.00-5.04 in.

Valve Stem to

Tip Height

(valve tip to

spring seat

washer)-Intake

48.1-49.7 mm

1.89-1.95 in.

Valve Stem to

Tip Height

(valve tip to

spring seat

washer)-

Exhaust

48.53-50.09

mm

1.91-1.97 in.

VALVE SEAT

DESCRIPTION

SPECIFICATION

Metric

Standard

Angle

-

44.5-45°

Run Out

(Service Limits)

0.0762 mm

0.003 in.

Width-Intake
and Exhaust

1.50-2.00 mm

0.057-0.078 in.

VALVE GUIDE

DESCRIPTION

SPECIFICATION

Metric

Standard

Guide Bore

Diameter (Std.)

6.975-7.00 mm

0.274-0.275 in.

VALVE MARGIN

DESCRIPTION

SPECIFICATION

Metric

Standard

Intake

0.825-0.973

mm

0.032-0.038 in.

Exhaust

1.565-1.713

mm

0.061-0.067 in.

VALVE STEM DIAMETER

DESCRIPTION

SPECIFICATION

Metric

Standard

Intake

(Standard)

6.935-6.953

mm

0.2718-0.2725

in.

Exhaust

(Standard)

6.906-6.924

mm

0.2718-0.2725

in.

CS

ENGINE 3.8L

9 - 129

ENGINE 3.8L (Continued)

VALVE STEM TO GUIDE CLEARANCE

DESCRIPTION

SPECIFICATION

Metric

Standard

Intake

0.025-0.065

mm

0.001-0.0025 in.

Exhaust

0.059-0.094

mm

0.002-0.0037 in.

Max Allowable-

Intake (Rocking

Method)

0.247 mm

0.010 in.

Max Allowable-

Exhaust

(Rocking

Method)

0.414 mm

0.016 in.

PUSH RODS

DESCRIPTION

SPECIFICATION

Metric

Standard

Length

135.438 mm

5.33 in.

VALVE SPRING

DESCRIPTION

SPECIFICATION

Metric

Standard

Free Length-

Type A

51.4 mm

2.02 in.

Free Length-

Type B

53.4 mm

2.10 in.

Wire Diameter

Type A

3.95-4.77 mm

0.15-0.19 in.

Wire Diameter

Type B

4.19-4.29 mm

0.16-0.17 in.

Number of Coils

Type A

7.52

Number of Coils

Type B

7.25

Spring Tension

(Valve Closed)

Type A

376.4-424.4 N

@ 41.9 mm

84.6-95.6 lbs.
@ 1.65 in.

Spring Tension

(Valve Open)

Type A

863.9-959.9 N

@ 41.9 mm

194.2-215.8 lbs.
@ 1.65 in.

Spring Tension

(Valve Closed)

Type B

377-423 N @

41.9 mm

84.8-95.2 lbs.
@ 1.65 in.

Spring Tension

(Valve Open)

Type B

880-962 N @

30.91 mm

197.9-216.3 lbs.
@ 122 in.

Installed Height

41.1-42.7 mm

1.61-1.68 in

LUBRICATION

DESCRIPTION

SPECIFICATION

Metric

Standard

At Curb Idle

Speed*

(Minimum with

engine at
operating

temperature)

34.47 kPa

5 psi

At 3000 RPM

205-551 kPa

30-80 psi

Oil Filter

By-Pass Valve

Setting

62-103 kPa

9-15 psi

Oil Pressure

Switch Actuating

Pressure

14-28 Kpa

2-4 psi

caution:

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

at 3000 rpm.

OIL PUMP

DESCRIPTION

SPECIFICATION

Metric

Standard

Clearance Over

rotors-Inner and

Outer

0.10 mm

0.004 in.

Cover

Out-Of-Flat

(Max.)

0.025 mm

0.001 in.

Inner Rotor

Thickness

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.

9 - 130

ENGINE 3.8L

CS

ENGINE 3.8L (Continued)