Originally Posted by
Mr Cox
Yes, that's a bad looking one!
I wonder what happened to it, it doesn't look like regular wear....
If you consistently overcompressed it , or run fuel without ignition improver and really wind down on the compression screw, then it's quite easy to do with a PAW. Some sizes (eg PAW 09 Bluehead) were notorious for having a crank pin that wasn't always perpendicular to the liner centre-line, or parallel with the crankshaft centreline. The weakest part of the assembly was the little end which wore first.