Introduction - ENGINE CRANKCASE

1.2 16v, 1.4 16v

The engine block is cast iron, with high mechanical strength.

The crankshaft is supported by means of five main bearings.

The cylinders are formed directly in the engine block, and are graded into three sizes plus one oversize.

There are special channels in the engine block walls which allow the flow of coolant and lubricating oil.

1.6 16v

The engine block is spheroidal graphite cast iron, with high mechanical strength.

The crankshaft is supported by means of five main bearings.

The cylinders are formed directly in the engine block, and are graded into three sizes plus one oversize.

There are special channels in the engine block walls which allow the flow of coolant and lubricating oil.

1.8 16v

The cylinder block/crankcase is made from cast iron with closed-deck type cylinder liners/bores.

The crankshaft is supported by means of five main bearings.

There are special channels in the engine block walls which allow the flow of coolant and lubricating oil.

There is a jet in the lower section which sprays oil to cool the piston skirt and lubricate the gudgeon pin.

1.9 JTD 8v

The crankcase is in ductile cast iron

The cylinders are formed directly in the engine block, and are graded into three sizes plus one oversize.

The crankshaft is supported by five main bearings (1).

There are special channels in the engine block walls which allow the flow of coolant and lubricating oil.

At the bottom of each cylinder, there is a jet (2) from which oil is sprayed onto the piston crown to cool it and ensure the lubrication of the gudgeon pin.

1.9 JTD 16v

The crankcase is in ductile cast iron

The cylinders are formed directly in the engine block, and are graded into three sizes plus one oversize.

The crankshaft is supported by five main bearings (1).

There are special channels in the engine block walls which allow the flow of coolant and lubricating oil.

At the bottom of each cylinder, there is a jet (2) from which oil is sprayed onto the piston crown to cool it and ensure the lubrication of the gudgeon pin.

1.2 16v, 1.4 16v

T2 LOWER CYLINDER BLOCK/CRANKCASE, SPECIFICATONS

The lower crankcase is made out of pressure cast aluminium alloy, with co-cast iron main bearing caps.

The mounts and main bearing caps are machined together with the upper crankcase.

The lower crankcase is fitted to the upper crankcase by means of bolts and locating dowels to ensure greater precision.

A strip of sealant is applied between both crankcases to prevent oil leaks.

COMPOSITION

The upper and lower cylinder block/crankcase are illustrated in the diagram below.