This is the most important part of an engine – the combustion chamber consisting of cylinder and piston. The perfection with which it is made shows that there is not even the tiniest of space for a foreign body inside the combustion chamber. Do you know for a vehicle to cover 1 KM at average 60 KMPH at 2000 RPM, it requires at least 1000 combustions inside the cylinder. Imagine its speed. To run at 60KMPH combustion should take place at least 16 times in one second.