compression ratio VOLVO S40 2005 Owners Manual

driving in mountainous areas.
American Petroleum Institute (API) symbol
The API Service Symbol "donut" is divided into three parts:
The upper section describes the oil's performance level.
The center identifies the oil's viscosity.
The lower section indicates whether the oil has demonstrated energy-conserving properties in a standard test in
comparison to a reference oil.
pg. 188 Engine specifications
Engine designation B5244S4 B5244S7B5254T3
Output
kW/rps 125/100 125/100162/83
hp/rpm 168/6000 168/6000218/5000
Torque
Nm/rps 230/73 230/73320/25-80
ft. lbs./rpm 166/4400 166/4400236/1500-4800
No. of cylinders 5 55
Displacement (liters/cubic
inches) 2.44/148.6
2.44/148.62.52/153.8
Bore (mm/in.) 83/3.27 83/3.2783/3.27
Stroke (mm/in.) 90/3.54 90/3.5493.2/3.67
Compression ratio 10.3:1 10.3:19.0:1
Spark plugs
type Volvo kit no. 30650843 Volvo kit no. 30650843Volvo kit no.
30650379
gap inches/mm (3x) 0.024 ± 0.004 in./0.6 ±
0.1mm (3x) 0.024 ± 0.004 in./0.6 ±
0.1mm
0.027in./0.7mm
tightening torque ft. lbs./Nm 22.5 ft. lbs./30 Nm 22.5 ft. lbs./30 Nm22.5 ft. lbs./30 Nm
Charge air cooler (Intercooler)
Turbocharged engines employ a turbocompressor to force air into the engine inlet manifold and a charge air cooler to
cool the compressed inlet air. The resulting increase in air flow raises pressure in the intake manifold and increases
engine power over that developed by the normally-aspirated engine. The charge air cooler (which resembles a radiator)
is located between the turbo-compressor and inlet manifold.
Fuel system
The engine is equipped with a multiport fuel injection system.
pg. 189 Electrical system
General information
12-volt system with voltage controlled generator. Single wire system in which the chassis and engine block are used as
conductors, grounded on the chassis.
Bulbs
Please refer to page 155
for a list of the bulbs used in your car.
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