Chrysler Le Baron, Dodge Dynasty, Plymouth Acclaim. Manual — part 590

3.3/3.8L ENGINE

INDEX

page

page

Camshaft

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112

Camshaft Bearings—Engine Removed From

Vehicle

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Checking Engine Oil Pressure

. . . . . . . . . . . . . . 125

Connecting Rods

. . . . . . . . . . . . . . . . . . . . . . . . 118

Crankshaft Oil Seals Service

. . . . . . . . . . . . . . . 121

Crankshaft Service

. . . . . . . . . . . . . . . . . . . . . . 118

Cylinder Block, Piston and Connecting Rod

Assembly Service

. . . . . . . . . . . . . . . . . . . . . . 114

Cylinder Heads

. . . . . . . . . . . . . . . . . . . . . . . . . 102

Engine Assembly

. . . . . . . . . . . . . . . . . . . . . . . . 101

Engine Core Oil and Cam Plugs

. . . . . . . . . . . . 113

Engine Lubrication System

. . . . . . . . . . . . . . . . 122

Engine Mounts

. . . . . . . . . . . . . . . . . . . . . . . . . . 99

Engine Specifications

. . . . . . . . . . . . . . . . . . . . . 126

General Information

. . . . . . . . . . . . . . . . . . . . . . . 98

Hydraulic Tappets

. . . . . . . . . . . . . . . . . . . . . . . 108

Installing Piston and Connecting Rod Assembly

. 117

Intake Manifold Sealing

. . . . . . . . . . . . . . . . . . . 104

Oil Filter

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125

Oil Pan Service

. . . . . . . . . . . . . . . . . . . . . . . . . 122

Oil Pump Service

. . . . . . . . . . . . . . . . . . . . . . . 123

Rocker Arms and Shaft Assembly

. . . . . . . . . . . 102

Timing Chain Cover, Oil Seal and Chain

. . . . . . 109

Valve Service

. . . . . . . . . . . . . . . . . . . . . . . . . . 104

Valve Timing

. . . . . . . . . . . . . . . . . . . . . . . . . . . 109

GENERAL INFORMATION

ENGINE IDENTIFICATION NUMBER OR CODE

The engine identification number is located on the

rear of the cylinder block just below the cylinder
head (Fig. 2).

ENGINE: The 3.3L (201 Cubic. Inches.) and 3.8L

(231 Cubic. Inches.) displacement engines are 60° V
type six cylinder power plant with cast iron cylinder
block and aluminum cylinder heads (Fig. 1). Firing
order for these engines is 1-2-3-4-5-6. High turbu-
lence cylinder heads allow a 8.9-1 compression ratio.

CRANKSHAFT: The nodular iron crankshaft is

supported by four main bearings, with number two

being the thrust bearing. Crankshaft end sealing is
provided by front and rear rubber seal.

PISTONS: The pistons are cast aluminum alloy.

Three rings are used. Piston pins, press fitted into
place, join the pistons to forged steel connecting rods.

CAMSHAFT:

The

nodular

iron

camshaft

is

mounted in four steel backed babbitt bearings. A
thrust plate located in front of the first bearing, and
bolted to the block, controls end play. Silent timing
chain drives the camshaft. This chain is enclosed by
a cast aluminum cover which also carries a front
crankshaft seal, provides front oil pan closure, water
pump mounting.

SPECIFICATIONS

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3.3/3.8L ENGINE

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CYLINDER HEADS: Cylinder heads incorporate

valve shrouding to create turbulence-producing com-
bustion chambers, described as fast burn. Valve seat
and guides are inserts. A steel flanged composition
type gasket is used between head and block.

VALVE COVERS: The covers are sealed with

steel reinforced silicon rubber gaskets.

INTAKE MANIFOLD: The intake manifold is a

tuned two-piece semi-permanent mold aluminum

casting with individual primary runners leading
from a plenum to the cylinders. The manifold is de-
signed to boost torque in the 3600 rpm range and
contributes to the engine’s broad, flat torque curve,
which was desired for excellent engine tractability,
response and usable power output.

The intake manifold is also cored with upper level

EGR passages for balanced cylinder to cylinder EGR
distribution.

VALVE TRAIN: Valve train design incorporates

the use of hydraulic roller tappets. Rocker arms are
installed on a rocker arm shaft attached to the cylin-
der head with four bolts and retainers. Viton valve
stem seals provide valve sealing. Conventional type
pushrods, retainers and valve stem locks are used.
Unique beehive style valve spring are used with
lightweight retainers for improved high RPM perfor-
mance.

EXHAUST MANIFOLDS: Exhaust manifolds are

log type with a crossover and is attached directly to
the cylinder heads.

ENGINE MOUNTS

REMOVAL AND INSTALLATION

RIGHT SIDE MOUNT

(1) Remove the right engine mount insulator ver-

tical fasteners from frame rail.

(2) Remove the load on the engine motor mounts

by carefully supporting the engine and transmission
assembly with a floor jack.

Fig. 1 3.3/3.8L V-6 Engine

Fig. 2 Engine Identification

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3.3/3.8L ENGINE

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(3) Remove the thru bolt from the insulator assem-

bly. Remove insulator.

(4) Reverse removal procedure for installation. Re-

fer to (Fig. 3) for bolt tightening specifications.

(5) Engine mount adjustment, Refer to Engine

Mount Insulator Adjustment of this section.

FRONT MOUNT

(1) Support the engine and transmission assembly

with a floor jack so it will not rotate.

(2) Remove the thru bolt from the insulator and

front crossmember mounting bracket.

(3) Remove the front engine mount bracket to

front crossmember screws and nuts. Remove the in-
sulator assembly.

(4) Reverse removal procedure for installation. Re-

fer to (Fig. 3) for bolt tightening specifications.

(5) Engine mount adjustment, Refer to Engine

Mount Insulator Adjustment of this section.

LEFT SIDE MOUNT

(1) Raise vehicle on hoist and remove left front

wheel.

(2) Remove inter splash shield.
(3) Support the transmission with a transmission

jack.

(4) Remove the insulator thru bolt from the mount.

(5) Remove the transmission mount fasteners and

remove mount.

(6) Reverse removal procedure for installation. En-

sure that the slide tube is seated into the rail
bracket guides. Refer to (Fig. 3) for bolt tightening
specifications.

(7) Engine mount adjustment, Refer to Engine

Mount Insulator Adjustment of this section.

ENGINE MOUNT RUBBER INSULATORS

Insulator location on yoke bracket to engine plate

(right side) and transmission bracket (left side) are
adjustable to allow right/left drive train adjustment
in relation to drive shaft assembly length.

Check and reposition right engine mount insulator

(left engine mount insulator is floating type and will
adjust automatically (Fig. 4). Adjust drive train posi-
tion, if required, for the following conditions:
• Drive shaft distress: See Driveshafts in Suspen-
sion, Group 2.
• Any front end structural damage (after repair).

• Insulator replacement.

ENGINE MOUNT INSULATOR ADJUSTMENT

(1) Remove the load on the engine motor mounts

by carefully supporting the engine and transmission
assembly with a floor jack.

Fig. 3 Engine Mounting

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3.3/3.8L ENGINE

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(2) Loosen the right engine mount insulator yoke

screw and 2 turns on yoke nut, then loosen the front
engine mount bracket to front crossmember screws and
nuts.

Left engine mount insulator is sleeved over

shaft and long support bolt to provide lateral
movement adjustment with engine weight re-
moved or not.

(3) Pry the engine right or left as required to achieve

the proper drive shaft assembly length. See Drive
Shaft in Suspension Group 2 for driveshaft identifica-
tion and related assembly length measuring.

(4) Tighten right engine mount insulator yoke nut to

102 N

Im (75 ft. lbs.). Then tighten front engine mount

screws and nuts to 54 N

Im (40 ft. lbs.) and center left

engine mount insulator.

(5) Recheck drive shaft length.

ENGINE ASSEMBLY

REMOVAL

(1) Disconnect battery.
(2) Mark hood position at hinges and remove hood.
(3) Drain cooling system. Refer to Cooling System,

Group 7 for procedure.

(4) Disconnect all electrical connections.
(5) Remove coolant hoses from radiator and engine.
(6) Remove radiator and fan assembly.
(7) See Fuel System, Group 14, to release fuel pres-

sure. Disconnect fuel lines and accelerator cable.

(8) Remove air cleaner assembly.
(9) Hoist vehicle and drain engine oil.
(10) Remove air conditioning compressor mounting

bolts and set compressor aside.

(11) Disconnect exhaust pipe at manifold.
(12) Remove transmission inspection cover and

mark flex plate to torque converter position. For disas-
sembly procedure for the all wheel drive vehicle refer to
Group 21 Transaxle.

(13) Remove screws holding torque converter to

flex plate and attach C-clamp on bottom of converter
housing to prevent torque converter from counting
out.

(14) Remove power steering pump mounting bolts

and set pump aside.

(15) Remove

two

lower

transmission

to

block

screws.

(16) Remove starter.
(17) Lower vehicles and disconnect vacuum lines

and ground strap.

(18) Install transmission holding fixture.
(19) Attach engine lifting hoist and support en-

gine.

(20) Remove upper transmission case to block

bolts.

(21) See Engine Mounting in (Fig. 3) and separate

mount/insulators as follows:

(a) Mark RIGHT insulator on right rails sup-

ports. Remove insulator to rails screws.

(b) Remove FRONT engine mount through bolt

and nut.

(c) Remove LEFT insulator through bolt from in-

side wheelhouse or insulator bracket to transmis-
sion screws.
(22) Remove engine.

INSTALLATION

(1) Attach hoist and lower engine into engine com-

partment.

(2) Align engine mounts and install but do not

tighten until all mounting bolts have been installed.
Tighten bolts to torque specified in (Fig. 3).

(3) Install transmission case to cylinder block,

tighten bolts to 102 N

Im (75 ft. lbs.) torque.

(4) Remove engine hoist and transmission holding

fixture.

(5) Remove C-clamp from torque converter hous-

ing. Align flex plate to torque converter and install
mounting screws. Tighten to 75 N

Im (55 ft. lb-

s.)torque. Refer to Group 21 transaxle for the all
wheel drive installation procedure.

(6) Install transmission inspection cover.
(7) Connect exhaust system at manifold.
(8) Install starter.
(9) Install power steering pump and air condition-

ing compressor. For belt installation see Accessory
Belt Drive in Cooling System Group 7.

(10) Lower vehicle and connect all vacuum lines.
(11) Connect all electrical connections including

ground strap.

(12) Connect fuel lines and accelerator cable.
(13) Install radiator and fan assembly. Reconnect

fan motor electrical lead. Reinstall radiator hoses.
Fill cooling system. See Cooling System Group 7 for
filling procedure.

(14) Fill engine crankcase with proper oil to cor-

rect level.

Fig. 4 Left Insulator Movement

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3.3/3.8L ENGINE

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