Cylinder head/s - various operations

Description 1016E

1.8 16v

The cylinder head is of the monolithic type, of aluminium-silicon alloy.

The four valves per cylinder are mounted in their respective guides in V formation at about 47° and controlled by two camshafts via hydraulic tappets.

The valve guides are installed by interference fit in their seats in the cylinder head.

The inner diameter is finished off after assembly, using a specific reamer.

The cylinder head gasket is of the Aramide fibre type, and there is no need to retighten the cylinder head at all during the life of the engine.

2.4 20v

Operation

The cylinder head is a structural part of the engine which houses and supports the timing components.

1.9 JTD 8v

The cylinder head is of the monolithic type, of aluminium-silicon alloy.

The two valves per cylinder, parallel and vertical, are fitted in the valve guides and are operated by a single overhead camshaft with cams acting on mechanical type tappets.

The valve guides are installed by interference fit in their seats in the cylinder head. The bore is finished off after assembly, using a specific reamer.

Compared with heads with precombustion chambers, the entire combustion process takes place in the combustion chamber in the piston.

The cylinder head gasket is of the multilayer metal type, and there is no need to retighten the cylinder head at all during the life of the engine.

1.9 JTD 16v

The cylinder head is of the monolithic type, of aluminium-silicon alloy.

Two cast iron camshafts, in a camshaft housing; driven by a belt and gears.

The four valves per cylinder, parallel and vertical, are positioned in the valve guides and operated by rockers controlled by camshaft cams kept in contact with the valves by means of hydraulic tappets.

The valve guides are installed by interference fit in their seats in the cylinder head. The bore is finished off after assembly, using a specific reamer.

Compared with heads with precombustion chambers, the entire combustion process takes place in the combustion chamber in the piston.

The cylinder head gasket is of the multilayer metal type, and there is no need to retighten the cylinder head at all during the life of the engine.

2.4 20v

Structure

The cylinder head is of the monolithic type, of aluminium-silicon alloy.

The four valves per cylinder are mounted in their respective guides in V formation at about 47° and controlled by two camshafts via hydraulic tappets.

Structure

The valve guides are an interference fit in the cylinder head seats and the internal diameter is corrected, after fitting, using a special reamer.

The cylinder head gasket is of the Aramide fibre type, and there is no need to retighten the cylinder head at all during the life of the engine.