I replaced an engine last month and filmed the whole job. Over eight hours of work are compressed into two and a half minutes. The sounds are where Motor Rhythms comes in. Using a looping app for the iPad I recorded several different sounds in an auto repair shop. Some of the sounds include an oil pump, air ratchets, and impact guns. Then I looped the sounds together to form the rhythms that are in the video.
I hope you enjoy it!