Learn everything about engine block aka cylinder block, the mass massive chunk of metal that forms the centerpiece and biggest piece of your engine. The massive holes in the engine houses cylinders where the pistons slide up and down. Also, has passage ways for coolant and oil. That besides it also holds the accessories of the auxiliary components of engine such as alernator, water pump, starter motor, AC compressor etc. These are made from cast iron and more recently aluminum alloy ever since mass production came along. This video covers everything about engine block.