What Causes a Spun Bearing in an Engine?

What is a spun bearing? Can you drive on a spun bearing? You can have a spun rod bearing or a spun crank bearing and when they fail, it sometimes destroys the engine like in our Lemons BMW. In this video I show you how to diagnose a spun bearing and possible causes. We disassembled the entire engine, every single nut and bolt, so you guys can see what causes an engine to throw a connecting rod and fail.

Our Backup Race Engine Being Built: https://youtu.be/f8Z4OSrI59s

Stainless Steel Headers: https://ebay.us/3OphJl
Chain Tensioner: https://amzn.to/3J5S7Uf
Timing Chain Cover Gasket: https://advanceautoparts.rt8x.net/4eMymL

Picking our Endurance Race Car: https://youtu.be/_U5XcrifRjQ
How to Replace Power Steering Pump: https://youtu.be/04iDF3I6dTo
Complete Weight Reduction Episode: https://youtu.be/MCiNGmwopx4
What Happened to the Lemons BMW: https://youtu.be/IbPhor1mnCA
My FIRST Wheel to Wheel Endurance Race: https://youtu.be/_vrICr6iNGI
How to Install a Quick Release Steering Wheel: https://youtu.be/bIGDhqY6KpE
Completing my First 24hr Endurance Race: https://www.youtube.com/watch?v=ZZxnDCJTOxs

0:00 How the engine failed
1:25 Installing the junkyard M54 engine
3:14 Stainless steel long tube headers
5:13 Backup BMW motor being built
6:44 What caused the motor to fail
10:20 What is a spun bearing
13:43 What causes a spun bearing
15:17 Oil analysis
18:17 Race car livery

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Видео What Causes a Spun Bearing in an Engine? канала ChrisFix