Volvo B200K Specifications
| Engine Model: Volvo B200K |
| Engine Type: 4-cycle inline 4-cylinder SOHC 8-valve liquid-cooled gasoline |
| Total Displacement: 121.2 cu.in (1.98 L) |
| Rated Engine Power: 101-103 Hp (74-76 kW) at 5400 rpm |
| Fuel System Type: Carburetor |
____________________________________________________________________________________
The Volvo B200K represents the carbureted variant
within the "low-friction" generation of the renowned Volvo Redblock engine
family, introduced in 1985 as a successor to the B19A. This 2.0-liter
inline-four powerplant was engineered to reduce mechanical resistance through
internal refinements, contributing to improved fuel efficiency while maintaining
the durability characteristics for which the Redblock series became legendary.
The "K" designation denotes Karburator (carburetor), distinguishing this engine
from the fuel-injected variants that would eventually supersede it as emissions
regulations tightened across European markets. Employing a single overhead
camshaft driven by a rubber timing belt, the B200K utilized a relatively high
compression ratio of 10.0:1 to maximize thermal efficiency in combination with a
twin-choke carburetor.
Produced during the transitional period between mechanical fuel delivery and
widespread electronic engine management, this engine became known as a workhorse
powerplant across the Volvo 200, 300, and 700 series in European markets, valued
for its torque characteristics and serviceability.
Configuration: Inline four-cylinder, longitudinally mounted.
Valvetrain: SOHC, 8 valves with two valves per cylinder.
Displacement: 1,986 cc (121.2 cu.in).
Bore: 88.9 mm (3.50 in).
Stroke: 80.0 mm (3.15 in).
Compression ratio: 10.0:1.
Firing order: 1-3-4-2.
Engine rotation: Clockwise when viewed from the crankshaft pulley end.
Maximum power output: 74-76 kW (101-103 hp) at 5,400 rpm.
Maximum torque: 160-165 Nm (118-122 lb-ft) at 2,500 rpm.
Engine idle speed: 850-900 rpm.
Maximum engine speed: 6,000 rpm governed.
Fuel requirement: 98 RON octane leaded or unleaded gasoline; later market
adjustments permitted operation with 95 RON with timing modification.
The cylinder block is constructed from cast iron using
conventional sand-casting techniques, providing the foundation for the Redblock
family's reputation for durability and high mileage capability. The deep-skirt
design extends the block structure below the crankshaft centerline, contributing
to overall rigidity and vibration damping. Five main bearings support the
crankshaft, with the intermediate bearings positioned between each cylinder to
manage the loads generated by the 88.9 mm bore diameter.
Cylinder bores are machined directly into the cast iron material without
separate liners, utilizing a plateau-honed finish to optimize piston ring
sealing and oil control. The block incorporates integrated engine mount bosses
on both sides for longitudinal mounting in rear-wheel-drive chassis. Water
jacket passages are cast around each cylinder bore with flow routing designed to
provide uniform cooling across the cylinder length.
The cylinder head is manufactured from cast iron,
maintaining material consistency with the cylinder block for uniform thermal
expansion characteristics. The cross-flow design positions the intake manifold
on the right side and the exhaust manifold on the left side for rear-wheel-drive
installations, optimizing exhaust system routing. Combustion chambers utilize a
hemispherical configuration with two valves per cylinder arranged to promote
efficient flame propagation from the centrally located spark plug.
The single overhead camshaft is supported by five bearing journals machined
directly into the cylinder head casting. Valve actuation employs a system of
rocker arms pivoting on a single shaft, with the camshaft lobes acting directly
on the rocker arms to open the valves. Valve lash adjustment requires manual
intervention using eccentric pivots or adjusting screws depending on production
period. The camshaft is driven by a rubber timing belt with an automatic
spring-loaded tensioner.
Valves: 8 (2 per cylinder).
Intake valve diameter: 44.0 mm (1.73 in).
Exhaust valve diameter: 38.0 mm (1.50 in).
Valve stem diameter: 8.0 mm (0.31 in).
Camshaft drive: Rubber timing belt with automatic spring-loaded tensioner.
Valve lash adjustment: Mechanical adjustment using eccentric pivots on rocker
arms, cold engine.
The fuel system employs a single horizontal carburetor
configuration. Depending on market specification and production year, the B200K
was equipped with either a Solex Cisac twin-choke carburetor or a
Zenith-Stromberg unit. The carburetor incorporates an automatic choke mechanism
operated by a wax pellet or coolant-heated bimetal coil. A mechanical fuel pump
mounted on the cylinder head delivers fuel from the tank to the carburetor float
chamber. Vacuum-operated secondary throttle opening on twin-choke variants
provides additional airflow under high-load conditions.
Carburetor type: Solex Cisac 34-34 or Zenith-Stromberg 175 CD depending on
market Venturi diameter: Primary 26 mm (1.02 in), Secondary 27 mm (1.06 in) on
twin-choke units. Fuel pump: Mechanical diaphragm pump driven by camshaft
eccentric. Fuel requirement: 98 RON octane minimum for factory specification; 95
RON permissible with ignition timing adjustment Air cleaner: Paper-element
filter housed in cast aluminum or plastic housing with thermostatic air intake
control.
The lubrication system operates as a fully pressurized
wet-sump configuration utilizing a gear-type oil pump mounted at the front of
the engine and driven directly by the crankshaft. The pump incorporates a
pressure relief valve calibrated to maintain system pressure under
high-engine-speed conditions. Oil is drawn from the stamped steel oil pan
through a baffled pickup tube.
A full-flow spin-on oil filter is mounted externally on the cylinder block with
convenient service access. Oil is distributed through main galleries cast into
the cylinder block, supplying the five main bearings, connecting rod bearings,
camshaft bearings, and rocker arm pivots. Piston cooling jets are not employed
in this engine.
Oil pump type: Gear-type with pressure relief valve
Oil pressure at idle (warm): 1.0-1.5 bar (15-22 psi)
Oil pressure at 3,000 rpm: 3.5-4.5 bar (51-65 psi)
Oil capacity with filter change: 3.5-3.8 liters (3.7-4.0 US qt)
Oil viscosity specification: 10W-40 or 15W-40 meeting API grade SF or higher
Oil pan construction: Stamped steel with integrated windage tray
Oil filter thread: 3/4-16 UNF
Cooling system circulation is managed by a belt-driven
centrifugal water pump mounted on the front of the cylinder block. Coolant flows
from the pump into the cylinder block water jacket, circulating around the
cylinder bores before passing upward through the cylinder head gasket orifices
into the cylinder head. The thermostat housing is mounted at the cylinder head
outlet, controlling flow to the radiator based on coolant temperature. A coolant
bypass circuit maintains circulation through the heater core during warm-up.
Coolant capacity: 6.5 liters (6.9 US qt) including heater core and radiator.
Thermostat opening temperature: 87°C (189°F). Water pump drive: Serpentine
accessory belt. Radiator fan control: Engine-driven fan with thermostatic
viscous clutch; electric fan optional in later models. Coolant specification:
Ethylene glycol-based antifreeze with corrosion inhibitors, 50 percent
concentration recommended.
The ignition system employs a breakerless electronic
ignition system with a magnetic pickup sensor mounted within the distributor.
The ignition control module manages dwell and spark timing based on engine speed
and load signals from the distributor. Vacuum and centrifugal advance mechanisms
are incorporated into the distributor assembly.
A single ignition coil supplies high-tension
voltage to the distributor rotor, which distributes spark to the four
cylinders. Spark plug type: Bosch WR7DC or equivalent. Spark plug gap:
0.7-0.8 mm (0.028-0.031 in). Ignition timing: 10-12 degrees before top
dead center at idle with vacuum line disconnected. Distributor: Bosch or
Ducellier with vacuum and centrifugal advance.
Intake System: A cast aluminum intake manifold with
single carburetor mounting flange incorporates integral coolant passages to
preheat the intake mixture under cold conditions. A thermostatically controlled
air intake system draws heated air from an exhaust manifold shroud during
warm-up to improve fuel vaporization and cold driveability.
Exhaust System: Cast iron exhaust manifold with individual runners merging into
a single outlet flange. A single three-way catalytic converter was not fitted to
most B200K installations, as the engine was produced before mandatory catalyst
requirements in many markets. A single oxygen sensor is absent due to the
absence of closed-loop fuel control.
Emissions Control: Early B200K engines utilized crankcase ventilation systems
with a flame trap to prevent backfire propagation. Later versions incorporated
more extensive vacuum control systems for emission reduction, including a
complex network of vacuum hoses controlling carburetor functions and ignition
advance. Positive crankcase ventilation is integrated into the intake system.
Length: 640 mm (25.2 in)
Width: 540 mm (21.3 in)
Height: 700 mm (27.6 in)
Engine dry weight (complete assembly without fluids): 155 kg (342 lb)
Valve clearance inspection interval: 20,000 km (12,500
miles). Valve clearance adjustment interval: As required based on inspection
findings. Valve clearance (cold engine): Intake: 0.35-0.40 mm (0.014-0.016 in).
Exhaust: 0.40-0.45 mm (0.016-0.018 in). Timing belt replacement interval: 80,000
km (50,000 miles); failure results in valve-to-piston contact due to
interference engine design.
Engine oil change interval: 10,000 km (6,200 miles) under normal conditions;
5,000 km (3,100 miles) under severe service. Oil filter replacement interval:
Every oil change. Spark plug replacement interval: 20,000 km (12,500 miles) for
standard copper-core plugs. Coolant replacement interval: 40,000 km (25,000
miles) or 24 months.
Air filter replacement interval: 20,000 km (12,500 miles) under normal
conditions. Accessory belt inspection interval: 10,000 km (6,200 miles); replace
if cracking, glazing, or fraying is evident. Carburetor synchronization: As
required when idle quality or emissions deteriorate. Vacuum hose inspection:
Inspect for cracks, leaks, or disconnection at 20,000 km (12,500 miles)
intervals.
Cylinder head bolts (11 mm x 1.5 thread), Step 1: 30 Nm
(22 lb-ft)
Cylinder head bolts (11 mm x 1.5 thread), Step 2: 70 Nm (52 lb-ft)
Main bearing cap bolts, Step 1: 40 Nm (30 lb-ft)
Main bearing cap bolts, Step 2: 80 Nm (59 lb-ft)
Connecting rod cap bolts, Step 1: 30 Nm (22 lb-ft)
Connecting rod cap bolts, Step 2: 70 Nm (52 lb-ft)
Camshaft bearing cap bolts: 20 Nm (15 lb-ft)
Camshaft sprocket bolt: 70 Nm (52 lb-ft)
Crankshaft pulley bolt: 150 Nm (111 lb-ft)
Flywheel bolts: 60 Nm (44 lb-ft)
Intake manifold bolts: 25 Nm (18 lb-ft)
Exhaust manifold nuts: 25 Nm (18 lb-ft)
Spark plugs: 25 Nm (18 lb-ft)
Valve cover nuts: 10 Nm (7 lb-ft)
Oil pan bolts: 12 Nm (9 lb-ft)
Water pump bolts: 12 Nm (9 lb-ft)
Timing belt tensioner bolt: 25 Nm (18 lb-ft)
Engine mount through-bolts: 50 Nm (37 lb-ft)
The Volvo B200K engine was produced primarily for
European markets, serving as an entry-level powerplant across multiple model
ranges during the late 1980s.
Volvo 240 Series (1985-1989): Fitted to European market 240, 244, and 245 models
in GL and entry-level trims. The engine was installed with either a four-speed
manual transmission, five-speed manual, or three-speed automatic depending on
market and model year.
Volvo 360 (1985-1990): Used as the standard 2.0-liter carbureted option in the
360 series, providing improved performance compared to the earlier B19 series.
This application utilized a five-speed manual transmission exclusively.
Volvo 740 (1986-1989): Found in base model GL trims in select European markets
including Scandinavia, the United Kingdom, and the Netherlands. The B200K was
offered with either a five-speed manual transmission or a four-speed automatic
in the 740 chassis.
Volvo 940 (Early production): Limited early production of the 940 series in
certain European markets utilized the B200K before the transition to
fuel-injected engines became universal across the model range.
____________________________________________________________________________________
| Car Engines Technical Specifications |
| Small Engines Technical Specifications |
| Industrial Engines Technical Specifications |
| Outboard Engines Technical Specifications |
