Cylinder Heads

WARNING: This page is about a different car, the 2018 Land Rover Range Rover, 2017 Land Rover Range Rover, and 2016 Land Rover Range Rover. However, it is still accessible from the selected car via links, so may be relevant.

ITEM	DESCRIPTION
1	Studs
2	Bolts
3	Blanking plug

The cylinder heads are unique to each cylinder bank. Eight deep-seated bolts help reduce distortion and secure each cylinder head to the cylinder block. The cylinder head bolts are located beneath the camshafts, 4 under the intake camshaft and 4 under the exhaust camshaft. Two hollow dowels align each cylinder head with the cylinder block.

NOTE: The cylinder heads cannot be reworked.

The cylinder head gasket is available in 5 different thicknesses. The choice of gasket thickness is dependent on the maximum piston protrusion. Gasket thickness is identified by serrations cut into the front end of the gasket.

For additional information, refer to: SPECIFICATIONS

The cylinder head has 4 ports machined at each cylinder location, 2 exhaust ports and 2 intake ports. One of the intake ports is helical and functions as a swirl port, the other is arranged laterally as a tangential port and functions as a charge port.

The camshafts are of a hollow tube construction, with pressed on lobes. Each camshaft is retained by caps, 5 for the exhaust camshafts and 4 for the intake camshafts. Location letters, A to I for the intake camshaft and R to Z for the exhaust camshaft, are marked on the outer faces of the caps for each cylinder head.

The left cylinder bank exhaust camshaft is machined to accept a rear camshaft gear. The rear camshaft gear provides drive for the high-pressure fuel pump. For additional information, refer to: ACCESSORY DRIVE

The exhaust camshaft gear of the left cylinder head also incorporates a reluctor ring, which is used in conjunction with the Camshaft Position Sensor (CMP) sensor to measure engine position.

For additional information, refer to: ELECTRONIC ENGINE CONTROLS

The right cylinder head exhaust camshaft is machined at the rear end to provide a drive connection for the vacuum and oil scavenge pump.

The fuel injection nozzles are centrally mounted above each cylinder.

For additional information, refer to: FUEL CHARGING AND CONTROLS

The glow plugs are arranged centrally on the intake side of the cylinder heads, between the 2 intake ports of each cylinder.

For additional information, refer to: GLOW PLUG SYSTEM

The engine lifting eyes are bolted to the cylinder head, 1 at the front and 2 at the rear, 1 per cylinder head.