Super tuning car runs good shooting for great

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So the rod bearings last around 500 miles before a slight knocking is heard. The last set I drove a lot longer before pulling the engine apart. (Jackhammer/Down to copper). Should have done some more testing before throwing a new set of bearings in it but I didn’t. Threw it back together and I was driving again.

So the Engine is on the stand. Pulled all the bearings one at a time. They aren’t down to copper but they don’t look good.

Bought a fresh set of bearings and plasta gauged a couple. (Pictured above)

The car isn’t going to be driven over the winter. Just looking for possible causes.

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