Black sludge

As I am nearing completion of the 350, time to see what the destroyed carbon disk has done to the inside of the 500. I removed the rear cylinders, and as you can see, there is a black sludge covering everything, so far there doesn't seem to be any play in the bearings but I will only know if there is damage once I have cleaned out the crank shaft...

On the good news front, the other pistons and barrels look in perfect condition!