The timing chain on my '89 190E 2.6L. Is this engine free wheeling? Do I need to look for piston/valve damage?

I was ging about 75 mph when it broke. I don't hear anything hitting when I crank the engine and I also removed the spark plugs and didn't see any damage in any of the bores that I could actually see anything in. There seems to be clearance in one of the cylinders that I think is at the top and a valve is opened, but I'm not sure that it is fully opened or at the very top of travel.