Cylinder Head

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

The cylinder head is cast from aluminum alloy and heat treated. The cylinder head provides location for sixteen valves, four injectors, four glow plugs and one cylinder head temperature sensor. The cylinder head is cooled by a double layer water jacket. Each cylinder has four valves.

Ten bolts secure the cylinder head to the cylinder block. The cylinder head bolts can only be used once and must be replaced if they are removed. Before replacement bolts are used, the holes must be dry and free from oil.

Each cylinder is served by four valves. To help achieve the required gas flow characteristics, the cylinder head has two intake ports (tangential port/helical port) and two symmetrical exhaust ports arranged asymmetrically around the cylinder bore. The four centrally mounted injectors are located on the upper side of the cylinder head and direct fuel into the combustion chamber. The four centrally mounted injectors are located on the upper side of the cylinder head and direct fuel into the combustion chamber. The injectors are retained in the cylinder head by injector clamps and screws located on the camshaft carrier.

To help achieve the required gas flow characteristics, the fuel injectors are mounted centrally in the combustion chamber.

The cylinder head provides location for four glow plugs. They are located between the helical and tangential intake ports and protrude from the intake side into the combustion chamber.

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

The aluminum cylinder head is designed to react to the high diesel combustion cylinder pressures, while also providing a platform onto which the structural camshaft carrier can be mounted.

The cylinder head gasket is of a multi layer steel construction.