I will start a new post here. Instead of buying a used bottom core, of which I sent one back already, I am gonna use my spare engine to build up. I firmly believe it has way fewer hours on it than the engine I pulled as the crankshaft is in wonderful shape, almost no connecting rod wobble and wrist pin hole tight. So here's where I am, the spare engine is all torn apart and split. I want to clean the old oil and whatever else from the halves and covers, I did buy some Dawn and it did a pretty good job but there are areas I can't get at to brush to loosen up. Can I just buy some engine degreaser to spray and wash out when loosened? How do you guys clean the engine halves? I am not worried about the outside so much just want to clean the worst mess off. That's where I'm starting then progress. The crank is removed and have to take the tranny gears out again also.