You said you
Think it was just some left on sludge that is worked loose by the heat of running it? It's a nice thought at least.
Chuck, the stuff that's been coming out is definitely fresh. I just ran it for about 35minutes doing some box blading and I can see a couple of drops in the area where I first noticed the oil. I don't think I'll get out tonight to take it apart again.
When my cylinder cracked, I couldn't see it just looking down into the bore. But I could feel it with my fingernail, so then I just found some good black sludge, put some on my finger & wiped across the area. Then when I wiped the bore with a dry rag, the black line showed right up.
Daniel that reminds me that I could see a line in the bore that I thought was a scuff mark from the carbon buildup. Maybe that was a crack. I'll see if I can find a picture. Found one where I had just taken the head off. You can see the lines in the bore just between the valves. That would put the leak on the right side of the cylinder when looking at the front of the engine which was one of the areas that was wet.