Hey mr fro Indeed it has I haven't a clue what that layer of black stuff is on the top, the head was okay, didn't get to snap a picture of that, I've got a replacement head from my seized engine which will be replacing the old one, the chain was all good, the cog the chain was attached to was all good no missing teeth The crank shaft, span ran around without any noises at all I think the piston wiped out my cylinder at the same time though http://imageshack.com/a/img546/6150/2iry.jpg http://imageshack.com/a/img42/8595/ucdy.jpg