Recalled L87 massive failure teardown

[Keewatin427]

 

[KLA]

Already been posted a few times

 

[Keewatin427]

Already been posted a few times

This came out 5 hours ago

 

[KLA]

This came out 5 hours ago

Yeah, I see that this is his second video of the 6.2L teardown

 

[Keewatin427]

Yeah, I see that this is his second video of the 6.2L teardown

This one is much better because this is a documented recalled engine, as opposed to the first which was difficult for him to research. It’s quite honestly shocking to see how horribly this example failed. All 4 main bearings spun and a piston bearing fused, that’s wild. We got the recall up here, too, but we haven’t received our letters from GM about the official response, so if we go to our GM dealerships they won’t do anything about it without the notice from GM.

 

[MrScottly]

All 4 main bearings spun and a piston bearing fused, that’s wild.

I don't know much about motors, but generally speaking, when one main bearing spins it can cut off oil flow to the rod bearings...Maybe not in this case. But, not being an engineer, when a crank's journals aren't aligned with each other and you force that alignment with main caps torqued, no oil in the world is going to keep that crank away from the plain bearings. I'll let the more knowledgeable folks chime in.

 

[KLA]

This one is much better because this is a documented recalled engine, as opposed to the first which was difficult for him to research. It’s quite honestly shocking to see how horribly this example failed. All 4 main bearings spun and a piston bearing fused, that’s wild. We got the recall up here, too, but we haven’t received our letters from GM about the official response, so if we go to our GM dealerships they won’t do anything about it without the notice from GM.

We haven't received our letters from GM yet either. Letters are supposed to go out, I believe, on June 9th.

Just finished watching the entire video. Seems that the crank thrust bearings were bad also, allowing the crank to move which resulted in all 8 rod bearings seizing up in addition to a few main bearings.

Definitely a good video to watch. At first I didn't realize that it was a different video. But it was better than the first 6.2L L87 teardown video.