Engine Block
WARNING: This page is about a different car, the 2010 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
The cylinder block is made of cast iron. Many related parts are assembled internally and externally.
There are engine coolant and oil passages for cooling and lubricating in the inside of engine block.
On the inside of the engine block, machined piston bore surfaces help the piston to seal. Also oil cooling jets are installed to help the cooling of the piston.
The cylinder block has main bearing saddles and main bearing cap to support the crankshaft on the lower side.