Volvo B4164S Specifications
| Engine Model: Volvo B4164S |
| Engine Type: 4-cycle inline 4-cylinder DOHC 16-valve VVT liquid-cooled gasoline |
| Total Displacement: 96.8 cu.in (1.58 L) |
| Rated Engine Power: 104 hp (77 kW) at 5500 rpm |
| Fuel System Type: Multi-point fuel injection |
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The Volvo B4164S is a 1.6-liter, inline-four, naturally
aspirated gasoline engine from Volvo’s Modular Engine family, commonly referred
to as the “Whiteblock” series. Produced between 1996 and 1999, this powerplant
was developed specifically for European markets where tax structures and
insurance classifications favored smaller displacement engines, allowing Volvo
to offer an entry-level powertrain in its compact S40 and V40 lineup.
The B4164S represents a departure from the larger-displacement engines
traditionally associated with the Volvo brand, featuring a lightweight
all-aluminum construction - aluminum cylinder block and aluminum cylinder head -
that reduces overall mass and contributes to improved fuel efficiency and
vehicle dynamics. The engine utilizes a dual overhead camshaft (DOHC) valvetrain
with 16 valves and is managed by a Siemens Fenix 5.1 electronic fuel injection
system.
With a displacement of 1.587 Liters, the B4164S produces 77 kW (104 HP) and 143
Nm (105 lb-ft) of torque, delivering adequate performance for urban and highway
driving while maintaining the durability characteristics expected of Volvo
powertrains. The engine was succeeded in late 1999 by the B4164S2, which
incorporated variable valve timing (VVT) and a slight power increase to 109 PS.
The B4164S was never officially offered in the North American market, where the
turbocharged B4204T (1.9T) served as the sole gasoline engine for the S40 and
V40.
The B4164S is a 4-stroke, inline 4-cylinder, water-cooled gasoline engine
utilizing a dual overhead camshaft (DOHC) valvetrain with four valves per
cylinder, totaling 16 valves. Total displacement is 1.587 Liters (1,587 cc /
96.8 cu.in), derived from a bore of 81.0 mm (3.189 in) and a stroke of 77.0 mm
(3.031 in). The oversquare bore-to-stroke ratio favors higher-RPM power
production while maintaining compact external dimensions. The compression ratio
is set at 10.5:1, a relatively high value for a naturally aspirated engine of
its era, contributing to thermal efficiency and power output.
Maximum power output is 77 kW (104 HP) at 5,500 RPM. Peak torque of 143 Nm (105
lb-ft) is delivered at 4,200 RPM. The redline is calibrated to 6,500 RPM. The
firing order follows 1-3-4-2. The engine management system is a Siemens Fenix
5.1 electronic control unit (ECU) operating the sequential multi-point fuel
injection system with feedback from a heated oxygen sensor. The ignition system
utilizes individual ignition coils mounted directly above each spark plug
(coil-on-plug).
The cylinder block is manufactured from high-pressure
die-cast aluminum alloy, a material selection that significantly reduces overall
engine mass compared to cast-iron architectures. The open-deck design
incorporates cast-iron cylinder liners of the press-fit type with a finished
bore diameter of 81.0 mm (3.189 in). The deep-skirt design extends below the
crankshaft centerline, providing structural rigidity sufficient for the engine’s
operating range.
The crankshaft is cast from nodular iron with induction-hardened journal
surfaces and is supported by five main bearings. A structural aluminum oil pan
bolts to the lower crankcase, contributing to overall engine stiffness and
noise, vibration, and harshness (NVH) reduction. Connecting rods are forged
steel with a fractured-cap design ensuring precise bearing alignment.
Pistons are cast aluminum with a slight dish in the crown to achieve the 10.5:1
compression ratio. The piston skirts feature a graphite coating on certain
variants to reduce friction and scuffing during cold starts. Piston cooling jets
(oil squirters) are not employed in this naturally aspirated application, as
thermal loads remain within the design limits of the aluminum piston
construction.
The cylinder head is manufactured from aluminum alloy
and features a cross-flow design with four valves per cylinder - two intake and
two exhaust - arranged in a pent-roof combustion chamber configuration. The dual
overhead camshafts (DOHC) are driven by a rubber timing belt from the
crankshaft. The camshafts operate the valves through hydraulic lash adjusters
integrated into the valve lifters, eliminating the need for manual valve
clearance adjustments for the engine’s service life.
Intake valve diameter measures 32.0 mm (1.260 in); exhaust valve diameter
measures 28.0 mm (1.102 in). The valve stems are 6.0 mm (0.236 in) in diameter.
The intake camshaft is equipped with a camshaft position sensor that provides
engine position data to the Siemens Fenix 5.1 ECU. The combustion chambers
feature a compact design with squish areas that promote turbulence and efficient
combustion.
The intake ports are designed with high-flow characteristics and incorporate a
swirl control system that enhances charge motion at low engine speeds for
improved combustion stability. The valve seats are manufactured from sintered
alloy materials selected for durability under the engine’s operating conditions.
0The fuel system is a sequential multi-point fuel
injection (MPFI) system managed by the Siemens Fenix 5.1 engine control unit.
Fuel is supplied by an in-tank electric pump operating at a regulated pressure
of 3.0-3.5 bar (44-51 psi). The fuel injectors are mounted in the intake
manifold runners, positioned to direct fuel toward the intake valves. Each
injector is actuated sequentially based on inputs from the crankshaft position
sensor and camshaft position sensor.
The intake air system incorporates a hot-wire mass airflow sensor (MAF) located
upstream of the throttle body, providing precise air mass measurement for fuel
delivery calculations. The throttle body is cable-actuated and houses a throttle
position sensor (TPS) and an idle air control (IAC) valve that manages cold
start and idle stabilization. A fuel pressure regulator with a vacuum reference
maintains consistent pressure differential across the injectors. The fuel system
is calibrated for operation with unleaded gasoline of 95 RON (91 octane) or
higher.
The lubrication system is a full-flow, pressurized
design utilizing a gear-type oil pump mounted to the front of the crankshaft
within the timing belt cover. The oil pump draws oil from a structural aluminum
oil pan through a screened pickup tube and delivers it through a full-flow
spin-on oil filter. Total oil capacity is 4.0 Liters (4.2 qt) including the
filter. A water-cooled oil cooler is integrated into the oil filter mounting
assembly, maintaining oil temperature within the optimal range under sustained
high-load operation.
The lubrication circuit supplies oil to the crankshaft main bearings, connecting
rod bearings, camshaft bearings, hydraulic lash adjusters, and timing belt
tensioner. Oil pressure at operating temperature ranges from 2.0-4.0 bar (29-58
psi) across the normal engine speed range. The recommended oil is 5W-30 or
10W-40 meeting ACEA A3/B3 or A3/B4 specifications.
The cooling system is a water-cooled, pressurized
design utilizing a belt-driven centrifugal water pump mounted to the front of
the engine block. Coolant circulates through the aluminum block and cylinder
head, with a cross-flow aluminum radiator employed in all applications. The
thermostat is a wax-pellet unit with an opening temperature of 88°C (190°F),
achieving full open at 102°C (216°F).
Total coolant capacity ranges from 6.0-7.0 Liters (6.3-7.4 qt) depending on
vehicle platform and heater core configuration. The cooling fan is an electric
unit with variable speed control, operating only when required to reduce
parasitic drag and improve cold-start warm-up times. The cooling system is
designed with adequate capacity to maintain stable operating temperatures under
sustained highway driving and urban conditions.
Timing System: The camshafts are driven by a rubber
timing belt with reinforced fiber cord. The belt routes around the crankshaft
sprocket, tensioner pulley, idler pulley, and both camshaft sprockets. An
automatic spring-loaded tensioner with a hydraulic damper maintains correct belt
tension throughout the service interval. The engine is an interference design:
timing belt failure results in piston-to-valve contact, causing bent valves and
requiring cylinder head removal for repair. The water pump is driven by the same
timing belt, requiring concurrent replacement during belt service.
Ignition System: The ignition system is a distributor-less design with
individual ignition coils mounted directly above each spark plug (coil-on-plug).
The Siemens Fenix 5.1 engine control unit calculates ignition timing based on
inputs from the crankshaft position sensor, camshaft position sensor, mass
airflow sensor, and knock sensor. The knock sensor, mounted on the cylinder
block, allows the ECU to adjust timing to prevent detonation when lower-octane
fuel is used. Spark plugs are platinum-tipped units with a gap of 1.0-1.1 mm
(0.039-0.043 in).
Crankcase Ventilation: A closed positive crankcase ventilation (PCV) system
routes blow-by gases from the crankcase to the intake manifold through a PCV
valve. The system incorporates an oil separator within the camshaft cover to
prevent liquid oil from entering the intake tract. The PCV system is known to
require periodic cleaning of the oil separator and hoses to prevent blockages
that can lead to oil leaks from crankshaft seals.
Length measured from the front accessory drive face to
the transmission mounting flange is 580 mm (22.8 in). Width across the cylinder
head, intake manifold, and exhaust manifold measures 620 mm (24.4 in). Height
from the oil pan bottom surface to the top of the intake manifold is 650 mm
(25.6 in). The dry weight of the fully dressed engine - including the intake
manifold, exhaust manifold, fuel system, ignition system, and accessory drives -
is 125 kg (276 lb).
The timing belt is a critical service item with a
mandatory replacement interval of 120,000 km (75,000 miles). The water pump and
timing belt tensioner should be replaced concurrently as a preventative measure
due to the interference design. Engine oil and filter changes are recommended at
10,000-15,000 km (6,200-9,300 miles) or 12 months under normal driving
conditions.
Valve clearance inspection is not required due to the hydraulic lash adjuster
system. Spark plug replacement is specified at 60,000 km (37,000 miles) for
platinum-tipped plugs. The fuel filter is an in-line unit with a replacement
interval of 40,000 km (25,000 miles).
Coolant replacement is specified at 60,000 km (37,000 miles) or 48 months. The
PCV system should be inspected and cleaned at 80,000 km (50,000 mile) intervals
to prevent blockages. Compression pressure should be consistent across all four
cylinders, with a standard value of 1.2-1.4 MPa (174-203 psi) and a minimum
service limit of 1.0 MPa (145 psi) with maximum variation between cylinders of
0.1 MPa (15 psi).
Cylinder Head Bolts (Cold), Step 1: 30 Nm (22 lb-ft).
Cylinder Head Bolts (Cold), Step 2: 60 Nm (44 lb-ft).
Main Bearing Cap Bolts: 50 Nm (37 lb-ft).
Connecting Rod Cap Bolts: 30 Nm (22 lb-ft).
Crankshaft Damper Pulley Bolt: 180-200 Nm (133-148 lb-ft).
Camshaft Sprocket Bolts: 60-70 Nm (44-52 lb-ft).
Camshaft Bearing Cap Bolts: 12-15 Nm (9-11 lb-ft).
Valve Cover Bolts: 8-10 Nm (71-89 lb-in).
Intake Manifold Bolts: 20-25 Nm (15-18 lb-ft).
Exhaust Manifold Nuts: 20-25 Nm (15-18 lb-ft).
Oil Pan Bolts: 10-12 Nm (7-9 lb-ft).
Water Pump Bolts: 20-25 Nm (15-18 lb-ft).
Flywheel / Drive Plate Bolts: 70-80 Nm (52-59 lb-ft).
Timing Belt Tensioner Bolt: 25-30 Nm (18-22 lb-ft).
Timing Belt Idler Pulley Bolt: 25-30 Nm (18-22 lb-ft).
Engine Mount Bracket Bolts: 55-65 Nm (41-48 lb-ft).
The Volvo B4164S engine was exclusively deployed in the
first generation of Volvo’s compact series from 1996 through 1999, serving as
the entry-level gasoline powertrain primarily in European markets.
Volvo S40 (Phase 1): The four-door sedan received the B4164S as the base engine
option in European markets, where the 1.6-liter displacement qualified for
favorable tax and insurance classifications. The engine was paired with both
five-speed manual and four-speed automatic transmissions.
Volvo V40 (Phase 1): The five-door estate/wagon variant utilized the B4164S in
the same configuration as the S40, offering the entry-level powertrain for
buyers prioritizing fuel economy and lower operating costs. The engine was
mounted transversely in front-wheel-drive configuration.
Market Exclusivity: The B4164S was never officially offered in the North
American market, where only the turbocharged B4204T (1.9T) and the naturally
aspirated B4184S (1.8-liter) were available for the S40 and V40. The engine
remained in production until 1999, when it was succeeded by the B4164S2
featuring variable valve timing (VVT) and a power increase to 109 PS (80 kW /
107 HP).
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