Pistons reciprocate in these
The intake manifold is bolted to this.
Covers the pistons
Rotary power output
Raises and lowers the valves
The carburetor sits on top of this.
Surrounds engine block
Lets gas vapor in and exhaust out
Ignites the gasoline
Connects pistons with crank shaft
These vaporize gasoline
Cam shaft
Valves
Cylinder heads
Engine block
carburetor or fuel injector
Water jacket
Spark plugs
Intake manifild
Piston rods
Crank shaft
Cylinders