Volvo B4204S3 Specifications
| Engine Model: Volvo B4204S3 |
| Engine Type: 4-cycle inline 4-cylinder DOHC 16-valve VVT liquid-cooled gasoline |
| Total Displacement: 122 cu.in (1.99 L) |
| Rated Engine Power: 143 hp (107 kW) at 6000 rpm |
| Fuel System Type: Multi-point fuel injection |
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The Volvo B4204S3 is a 2.0-liter, naturally aspirated
four-cylinder gasoline engine that represents a departure from Volvo’s
traditional in-house engine development. Produced during the Ford Premier
Automotive Group era, this engine is a variant of the Ford Duratec HE
architecture, a joint-venture design shared with Mazda’s MZR engine family.
Unlike the Volvo Whiteblock engines that preceded it, the B4204S3 features an
all-aluminum construction and a timing chain-driven valvetrain, emphasizing
reduced mass and extended service intervals. This engine served as the mid-range
naturally aspirated powerplant for Volvo’s P1 platform vehicles, balancing fuel
efficiency with responsive performance. Its design prioritizes refinement,
utilizing a dual overhead camshaft arrangement with continuously variable valve
timing on the intake side to optimize volumetric efficiency across the operating
range.
Type: Inline 4-cylinder, gasoline, DOHC, transversely mounted.
Displacement: 1999 cc (122.0 cu.in).
Bore x Stroke: 87.5 mm (3.45 in) x 83.1 mm (3.27 in).
Compression Ratio: 10.8:1.
Valvetrain: Dual overhead camshafts driven by a silent-chain system.
Sixteen valves total, four per cylinder.
Firing Order: 1-3-4-2.
Maximum Power: 143 hp (107 kW) at 6000 rpm.
Maximum Torque: 185 Nm (136 lb-ft) at 4500 rpm.
Fuel System: Multi-point electronic fuel injection with sequential injection
timing. Fuel injectors are positioned in the intake ports. Ignition System:
Individual coil-on-plug ignition with integrated power output stages,
eliminating high-tension spark plug wires. Emission Standard: Euro 4 compliance
with later production variants achieving Euro 5 certification.
The cylinder block is manufactured from aluminum alloy
with cast-in-place iron cylinder liners to provide a durable wear surface for
the piston rings. This all-aluminum construction significantly reduces engine
mass compared to cast iron blocks, contributing to improved vehicle handling and
fuel economy. The block features an open-deck design at the cylinder head
interface, allowing efficient coolant flow around the upper cylinder bores for
enhanced heat dissipation.
Within the block, the crankshaft rotates in five main bearings with a bedplate
construction - a structural lower crankcase that adds rigidity and reduces
noise, vibration, and harshness. The bedplate is secured with cross-bolts to
create a rigid lower engine structure.
The cylinder head is cast from aluminum alloy and
houses dual overhead camshafts operating sixteen valves. The intake valves have
a diameter of 33.2 mm (1.31 in), while exhaust valves measure 28.0 mm (1.10 in).
Valve actuation employs hydraulic lash adjusters and roller finger followers,
eliminating the need for periodic valve clearance adjustments while reducing
friction.
The intake camshaft is equipped with a continuously variable valve timing
mechanism, allowing the camshaft phaser to advance or retard intake valve
opening by up to 50 degrees of crankshaft rotation. This system optimizes
volumetric efficiency across the rev range, enhancing low-end torque and
high-end power delivery. The cylinder head incorporates a pent-roof combustion
chamber design with centrally located spark plugs for efficient flame
propagation.
The fuel system operates with a returnless design,
where a single fuel line delivers fuel from the tank to the engine and a
pressure regulator integrated with the fuel pump module maintains system
pressure. The multi-point fuel injection system utilizes sequential injection,
with each injector firing individually in synchronization with its cylinder’s
intake stroke.
Fuel pressure is maintained at 4.0 bar (58 psi) under normal operating
conditions. The intake manifold incorporates a variable intake system with
tumble flaps - movable plates within the intake runners that enhance air swirl
at lower engine speeds to improve combustion stability and fuel efficiency. At
higher rpm, these flaps open fully to maximize airflow.
The lubrication system employs a gear-type oil pump
mounted to the front of the crankshaft, delivering oil through a full-flow
filter to the main bearings, connecting rods, and valvetrain components. The oil
pump is a variable-displacement design on later production variants, adjusting
output to reduce parasitic drag under low-load conditions.
Engine Oil Capacity: 5.5 liters (5.8 qt) with filter change. Recommended Oil
Grade: SAE 5W-30 meeting Ford WSS-M2C913-B or Volvo specification VCC 95200377.
ACEA A5/B5 grade oils are specified for extended drain intervals. The oil pan is
constructed from stamped steel with an integrated windage tray to separate oil
mist from the rotating assembly. A baffled sump maintains oil pickup during
cornering and braking maneuvers.
The cooling system utilizes a cross-flow radiator with
an electric cooling fan controlled by the engine control module. A belt-driven
water pump with a composite impeller circulates coolant through the block,
cylinder head, heater core, and radiator. Coolant Capacity: 7.2 liters (7.6 qt)
inclusive of the engine, radiator, and heater circuit.
The thermostat is integrated into a plastic housing mounted to the cylinder head
and opens at 88°C (190°F). A coolant temperature sensor provides input to the
engine control module for fuel enrichment, ignition timing, and cooling fan
activation. The system is designed for long-life coolant conforming to Volvo
specification VCC 9438031.
Timing Drive: The camshafts are driven by a Morse-style
silent chain operating in an oil bath. The chain runs from the crankshaft
sprocket to the intake camshaft sprocket, with a secondary chain linking the
intake and exhaust camshafts. A hydraulic chain tensioner maintained by engine
oil pressure ensures correct tension throughout the chain’s service life. This
system requires no scheduled replacement under normal operating conditions.
Variable Valve Timing: The continuously variable valve timing system on the
intake camshaft uses an oil-pressure-actuated phaser. The engine control module
regulates oil flow to the phaser through a solenoid valve, adjusting camshaft
position relative to the crankshaft based on engine speed, load, and
temperature.
Exhaust System: A cast stainless steel exhaust manifold with four individual
runners collects exhaust gases. The system incorporates two heated oxygen
sensors, one positioned upstream of the catalytic converter and one downstream,
providing closed-loop fuel control. A single three-way catalytic converter
reduces hydrocarbon, carbon monoxide, and nitrogen oxide emissions.
Crankcase Ventilation: A closed-loop positive crankcase ventilation system
routes blow-by gases through an oil separator integrated into the cylinder head
cover. Cleaned gases are drawn into the intake manifold, while condensed oil
drains back to the oil pan.
Overall Length: 610 mm (24.0 in) from timing chain
cover to flywheel.
Overall Width: 640 mm (25.2 in) measured at the intake manifold.
Overall Height: 660 mm (26.0 in) from oil pan to valve cover.
Dry Weight: 125 kg (276 lb) without ancillary components.
0Engine Oil Change Interval: 20,000 km (12,500 mi) or
12 months under normal operating conditions using approved synthetic oil. Severe
duty operation requires 10,000 km (6,200 mi) intervals. Oil Filter:
Cartridge-style replaceable element housed in a plastic filter cap. Replacement
at every oil change. Coolant Replacement: Every 120,000 km (75,000 mi) or 60
months. Air Filter: Replacement interval of 60,000 km (37,500 mi) under normal
conditions. More frequent replacement required in dusty environments.
Timing Chain: No scheduled replacement interval. Chain inspection is not
required under normal service conditions. Hydraulic tensioner operation depends
on proper oil pressure and clean engine oil. Spark Plugs: Iridium-tipped
electrodes with a gap of 1.3 mm (0.051 in). Replacement interval of 80,000 km
(50,000 mi). Fuel Filter: Integrated with the fuel pump module inside the fuel
tank. No scheduled replacement interval under normal operating conditions.
Drive Belt: Accessory drive belt (serpentine) with automatic tensioner.
Inspection interval of 90,000 km (56,000 mi). Replacement is recommended if
cracking or fraying is observed. Variable Intake Flaps: The tumble flap system
in the intake manifold may develop operational noise or fault codes if carbon
accumulation restricts movement. Diagnostic trouble codes related to the
variable intake solenoid indicate inspection requirements.
Cylinder Head Bolts: 30 Nm (22.1 lb-ft).
Main Bearing Cap Bolts (Bedplate): 28 Nm (20.7 lb-ft).
Connecting Rod Cap Bolts: 25 Nm (18.4 lb-ft).
Camshaft Bearing Cap Bolts: 12 Nm (8.9 lb-ft) for M6 bolts.
Camshaft Bearing Cap Bolts: 21 Nm (15.5 lb-ft) for M8 bolts.
Camshaft Phaser Bolt: 95 Nm (70.1 lb-ft).
Flywheel Bolts: 45 Nm (33.2 lb-ft).
Intake Manifold Bolts: 20 Nm (14.8 lb-ft).
Exhaust Manifold Nuts: 20 Nm (14.8 lb-ft).
Spark Plugs: 15 Nm (11.1 lb-ft).
Oil Drain Plug: 30 Nm (22.1 lb-ft).
Oil Filter Cap: 25 Nm (18.4 lb-ft).
Water Pump Mounting: 12 Nm (8.9 lb-ft).
Volvo C30: 2006 to 2012 model years. The B4204S3 served
as the mid-range naturally aspirated engine option, positioned between the
smaller 1.6-liter and the turbocharged T5 variants.
Volvo S40 Phase 2: 2006 to 2012. Installed in the S40 2.0 model designation,
this engine provided a balance of performance and fuel economy for the compact
sedan.
Volvo V50: 2006 to 2012. The B4204S3 powered the V50 2.0 wagon variant, offering
refined performance for the compact estate.
Volvo C70 Phase 2: Select markets received the B4204S3 in the 2.0-liter variant
during the 2006 to 2009 production period, though turbocharged engines
predominated in this convertible coupe application.
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