Engine

Engine
The 3.0 Liter 24 valve V6 engine has four overhead camshafts and are driven by two timing chains. The engine incorporates electronic engine management with distributorless ignition system, sequential electronic fuel injection and electronically controlled exhaust gas recirculation. It also has two catalytic converters in the exhaust system which includes two oxygen sensors and two catalytic monitor sensors.
Viewed from the driving position, the right-hand cylinder bank is numbered 1 to 3, from the front of the vehicle and the left-hand cylinder bank are numbered 4 to 6, from the front of the vehicle.
The S-Type includes the following:
^ 10.5:1 Compression ratio.
^ 3 Stage variable geometry intake manifold.
^ Lightweight valve gear.
^ Unique camshaft lift and duration.
^ Twin knock sensor engine management control.
^ Two position variable camshaft timing (VCT) system.
^ Twin mass flywheel (manual transmission).

Variable Intake System (V.I.S).
The variable intake system consists of a three stage upper intake manifold assembly, two position electronically driven gate valves and an engine management powertrain control system.
The powertrain control module switches the intake manifold tuning valves between fully open and fully closed at calibrated engine speeds.
The intake manifold efficiency is therefore increased which will also increase the engine torque and engine performance.

Engine Lubrication System
The engine lubrication system is of the force-feed type in which oil is supplied under full pressure to the:
^ Crankshaft main bearings.
^ Crankshaft thrust main bearing.
^ Connecting rod bearings.
^ Valve shims.
^ Camshaft bearings.
^ Variable camshaft timing.
All other parts are lubricated by gravity flow or splash of the oil.

Oil Pump
The rotary oil pump develops the oil pressure:
^ The oil pump is located at the front of the crankshaft.
^ The oil pump is driven by the crankshaft.
^ A full flow oil filter is externally mounted on the oil filter housing.
If the filter element should become blocked a spring-loaded bypass valve will open and allow an uninterrupted flow of oil to the engine.