That caked on gunk looks like there has been oil leaking into the combustion chambers - or perhaps this is how an engine looks after running WVO? I don't know...

Here are some pictures of my engine with a busted valve stem that caused a bit of problem!







So OK these picture show a much wetter combustion chamber but I hope they demonstrate my feelings of built up oil shown in your pictures

Attached Thumbnails

     

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1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!