Another Civic engine quetion?!?

Alright i am thinking of buying my boys 94 civic, so i was looking at the engine and its just liked metal (i aint got time for yall mother's yelling at me becuasei dont know much about engines) ok anyway well i am used to seeing the red cover over it think there called comthings covers anyway well there isnt one its just metal all metal.............. whats up???