1. How many degrees of crankshaft rotation are there between cylinder firings on an inline 4- cylinder engine, an inline 6-cylinder engine, and a V-8 engine? v-8- 60 degrees v6 60 degrees 4 cylinder- 720 degrees 2. List the types of engine bearing materials. Babbitt, copper-lead alloy, aluminum 3. Describe bearing crush and bearing spread.