First, I'm going to change my priority from the Defender to making sure I can trust the Range Rover. This will also get my son more involved, since it is going to be his truck.
Second, I'm going to keep working on all the little things I was planning on working on while the 110 was driving.
Third, in going to ignore that it is undrivable, and have Ship's fix the transmission. I'll get the turbo rebuilt. And I'll get the oil tested to see if the leak in the head is allowing coolant into the engine, or if it is just an external leak only.
I've managed to work on it an hour or so every few days for the past few months. This has got me to the spot I wanted to be last September. The "big" issues listed above were not supposed to happen now! Oh well.
Along those lines, I did take it for a drive today, right after driving Ryan's 200Tdi for comparison. Ryan definitely has his dialed in. One thing I noticed today on mine is that when rolling, at any speed, then stepping on gas to accelerate, there actually is some black smoke. Not enough to make a cloud. But enough to see in the diffused overcast light we had today. Also, I tried to shoot some video to see if the noises I'm hearing can be identified at all.
The first one is at 25 mph, coasting downhill in 3rd gear. The ticking from the forward transmission/bell housing is clearly heard during this time. But in real life it is much more distinct.
https://flic.kr/p/Tw3d6c and I just realized that it sounds exactly like an old movie projector.
The next is at 60 mph with engine just getting warm. The turbo can be heard. It is very distinct in real life. I don't think you can hear any of the warbling or flux in the turbo in this video.
https://flic.kr/p/StFQeZ
Thanks for all the help.