Engine - Volvo 164 Owner's Manual

TECHNICAL DESCRIPTION

ENGINE

The engine is a six-cylinder, water-cooled
carburetor unit with overhead valves. The
engine has a very rigid cylinder block
made of special cast iron and is cast in
one piece. The cylinder liners are machin-
ed directly in the block. The cylinder head
has separate inlet and exhaust ports, one
for each valve.
The statically and dynamically balanced
crankshaft is carried in seven main bear-
i ngs.
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Lubricating system
Engine lubrication is taken care of by a
gear pump located in the oil sump. The
pump is driven by a gear from the cam-
shaft. From the pump the oil is forced
through the full-flow type oil filter and
then along oilways to the various lubri-
cating points. A relief valve is built into
the oil pump and prevents the oil pressure
from reaching excessively high values.
The oil filter is of the full-flow type, that
i s, all the oil passes through the filter be-
fore continuing on to the engine lubricat-
i ng points. The B 30 E is fitted with an oil
cooler.
Fuel system, B 30 A
The engine is fitted with twin Zenith-Strom-
berg carburettors. The diaphragm-type fuel
pump draws fuel from the tank and pumps
it to the carburettors. A filter built into the
fuel pump removes any impurities in the
fuel.
Air preheating, B 30 A
The engine has thermostatically controlled
air preheating. This keeps the intake air
temperature constant and thus counter-
acts ice forming in the carburetors and
makes for shorter warming-up of engine
after cold starting. Some markets do not
have air preheating.