I could not overheat, as we have in Russia under cold -4 ° F - 22 ° F
Here it can be seen as in any weather it operated.
http://www.youtube.com/watch?v=NkESRLO0iBk
The oil is used in a ratio of 20/1
Steam piston - cylinder in good condition, except for the piston, which can be seen on the photo.
Needle bearing in the connecting rod in perfect condition.
But place the rod is made out of raw steel.
And in this place crumpled collar.
You try to disassemble your engine, and see what you have going on there.
Most likely outcome will be the same ...