Cylinder Block Assembly: Description and Operation

Cylinder Block and Components AJ16

The cylinder block has been modified to achieve several objectives and new pistons are used.

Water Jacket Depth

Water jacket depth has been reduced to improve block stiffness and to decrease engine warm-up time by 15% In addition. the water jacket modification reduces mechanical noise levels.

Camshaft Oil Supply Restrictors




Each camshaft oil supply passage has a 2.5 mm (0.098 in.) restrictor placed at the upper face of the block The restrictors decrease oil feed to the camshafts resulting in reduced oil being collected in the camshaft valley before returning to the sump.

Mounting Bosses For Knock Sensor




Two bosses have been added to the cylinder block at the left side for installation of knock sensors.

Mounting Bosses For Supercharger

On the SC engine, four bosses are also added to the left side of the block for the attachment of the supercharger.

Pistons

New pistons increase the compression ratio to 10:1 (previously 9.5 : 1) for the NA engines and 8.5 : 1 for the SC engine.