Main Bearings
Engine Bearings and How They Work
http://kingbearings.com/files/Engine_Bearings_and_How_They_Work.pdf
Bearings in Internal Combustion Engines
http://www.substech.com/dokuwiki/doku.php?id=bearings_in_internal_combustion_engines
Replacing Engine Main Bearings DIY
Watch Video Source: Grease Girl
Crankshaft Bearing Roll-In
Watch Video Source: Fanshawe Motive Power
Main Bearing Oil Clearances
Watch Video Source: Jafromobile
Types of Engine Bearing Damage
http://www.knowyourparts.com/technical-articles/types-of-engine-bearing-damage/
Engine Bearing Damage can be extremely harmful on your vehicle since engine bearings reduce friction within the engine. Learn more.
Crankshaft Main Bearings Installation
How to Remove Main Bearing Caps
Watch Video Source: MattHumanPizza
How to Use Plastigage
Watch Video Source: EricTheCarGuy