125-200cc Wait, so engines aren't supposed to compress water?

The C of O never said off road only on the Red Husky

Just to recap, I just got the bike back together this weekend and rode it about 5 miles around the block. I did not end up splitting the cases as I the rod had no discernible play or bends. Piston was fine as well. Ended up using a liberal amount of 2T oil in the bottom end and putting everything back together. After setting the squish depth, everything went back together fine. No issues and it started up 3rd kick. Still has the same great power as before!

What Walt (and I) concluded was the head was machined so much, that the small amount of material left collapsed before any other damage was done. Guess I got lucky!

Just wanted to say huge thanks to Walt for helping me getting it back up and running. He has provided invaluable support/info on these motors/bikes. Thank you.

Bens head had already been heavily milled before we ever started on the big bore conversion. So when the chamber was machined for the extra volume on top of that the head material was really thin. Worked as long as it wasn't compressing something that can't be compressed. Probably saved the rest of the motor as it gave in immediately relieving the pressure. Still had to be a severe shock to the rest of the crank and top end.

I bet anything from normal running temps to cold river water is a shock. Lol
Good job it was well machined then.