125000252 - 1016E CYLINDER HEAD/S - VARIOUS OPERATIONS

CONSTRUCTION SPECIFICATIONS

The cylinder head is one-piece in aluminium alloy and silicone.The four valves per cylinder are fitted in guides arranged in a V at an angle of 47° and controlled by two camshafts via hydraulic tappets.There is a calibrated jet (1) fitted in the cylinder head for the lubrication of the high pressure fuel pump coupling.

The arrangement of the spaces allows the combustion chamber to house:

• the four valve heads;
• the spark plug opening;
• the injector opening;

with the advantage of improving the thermal efficiency of the engine and reducing harmful exhaust emissions.The valve guides are an interference fit in the cylinder head seats.A special reamer is used to produce the correct inner diameter after fitting.The gasket between cylinder head and crankcase is metal and the head does not require retightening throughout the engine life.