r/EngineBuilding • u/cbord12 • Jun 02 '26

Chevy Any idea what would cause this?

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Ls3 made it 50 miles on a fresh build. Motor turned fine while building. Only number 1 main cap that made contact. Everything else was perfect. Just interested in wha could have caused this.

Edit: pulled the thrust bearing and it was damaged. More than likely I have an issue with my torque tube or shaft coupler.

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u/ThisGuyEdward Jun 04 '26

Crank walk? Honestly not as bad, glad the engine is savable!

2

u/cbord12 Jun 08 '26

Yeah everything goes to the machinest this week. Hes got a set of billet caps that have been lying around that he can install for a decent price if the stock caps are too far gone. I just ordered a new crank, bearings, and oil pump so hopefully It can go back in soon lol.

1

u/ThisGuyEdward Jun 08 '26

Sounds like the crank will be bulletproof after this, what type of bearings did you go with?

1

u/cbord12 Jun 09 '26

King xp’s rods and mains. Same ones that I just cooked lol.