Small engine disassemble

Hello there people of the internet, this past month my class and i have been drawing parts of a engine.

This is what it takes to power an engine. 

This is what you need for an assembly

What's in here?

Hi, my name's Jonathan I am a student at Memorial High School and I take a class called Auto Tech. We are not located in a regular classroom with desk and a blackboard. We are in a actual garage with tools and cars and its pretty much unorganized. So me and my classmate were told to do a project in which we would each have one problem and two solutions (one solution per person). We looked around and found this