Chrysler 1997 Stratus Convertible RHD Service Manual page 792

CYLINDER WALLS SPLASH LUBRI- CATED FROM DIRECTED HOLES IN ADJUSTERS, CAMSHAFT JOURNALS * NO. 2 CAMSHAFT CAP (FRONT AND REAR) RECEIVES OIL FROM CYLINDER HEAD TO SUPPLY ROCKERS, LASH CONNECTING RODS
9 - 56 2.5L ENGINE
DESCRIPTION AND OPERATION (Continued)
GENERAL SPECIFICATION
2.5L V-6 ENGINE
Type . . . . . . . . . . . . . . . . . . 60°V SOHC (Per Bank)
Bore . . . . . . . . . . . . . . . . . . . . . 83.5 mm (3.29 Inch)
Stroke . . . . . . . . . . . . . . . . . . . 76.0 mm (2.992 Inch)
Compression Ratio . . . . . . . . . . . . . . . . . . . . . . 9.4:1
Displacement . . . . . . . . . 2.5 Liters (152 Cubic Inch)
Firing Order . . . . . . . . . . . . . . . . . . . . 1–2–3–4–5–6
Lubrication . . . . . . . . . . . . . . . . . Pressure Feed-Full
(Direct Crankshaft Driven Pump)
Engine Oil Capacity . . . . . . . . . 4.25 Liter (4.5 Qts.)
3.8 Liter (4.0 Qts.) Without Filter.
Cooling System . . . Liquid Cooled-Forced Circulation
(Pump-Timing Belt Driven)
Cylinder Block . . . . . . . . . . . . . . . . . . . . . . Cast Iron
Crankshaft . . . . . . . . . . . . Cast (Nodular Cast Iron)
Cylinder Head . . . . . . . . . . . . . . . . Aluminum Alloy
Connecting Rods . . . . . . . . . . . . . . . . . . Forged Steel
Pistons . . . . . . . . . . . . . . . Aluminum Alloy (w/Strut)
ENGINE LUBRICATION SYSTEM
The lubrication system is a full flow filtration pres-
sure feed type. Oil, stored in the oil pan, is taken in
and discharged by a trochoid type oil pump directly
coupled to the crankshaft and its pressure is regu-
CYLINDER CAMSHAFT BOLTS HEAD JOUR- NALS
Flow Filtration
Including Oil Filter,
Fig. 2 Engine Oiling
PICKUP CAMSHAFT JOURNALS
lated by a relief valve. The oil is fed through an oil
filter and to the crankshaft journals from the oil gal-
lery in the cylinder block. This gallery also feeds oil
under pressure to the cylinder heads and camshaft
journals. It then flows from the cylinder head pas-
sages to the rocker shafts to the rocker arm pivots
and auto lash adjusters (Fig. 2).
ENGINE COMPONENTS
BLOCK
The cylinder block is a partial open deck design to
improve cooling and weight reduction. High rigidity
is provided with ribs cast in the outer wall, and a
monoblock or beam type main bearing cap system.
This single unit four bearing cap is designed to con-
trol vibration of the cylinder block partition walls.
CRANKSHAFT
The crankshaft is made of nodular cast iron and
has six individual throws with five counter weights,
it is supported by four main bearings with number
three being the thrust bearing. The six separate con-
necting rod throws pins reduce torque fluctuations
while a dynamic damper is used to control torsional
vibration of the crankshaft. Rubber lipped seals are
used at front and rear. The front seal is retained in
PUMP RELIEF VALVE MAIN FILTER LERY GAL-
JX