I had the same thing happen in my freshly built 26. I was driving one day and bounced off the limiter a couple of times in the wet but I didn't really think much of it, I'm guessing the crank may have had some starvation at this point though.
Started the car about 2 weeks later and it spun a bearing in the driveway.
When the engine was stripped it turned out the bearing clearances weren't correct.