I know I am one of the few here without a degree, so I need to ask. I took high school science classes, and hated chem and bio. Too bad the physics portion was basically non existent. Learning the gravity constant from uninspiring teachers didn't exactly show me the sciences as an interesting field. They made it as boring as possible, and didn't give us work that inspired tangents and thought.
That being said, thanks for coddling my unpickled mind.
There was a rumor (untrue) that BMW was scouring junkyards for seasoned blocks, as they were already pre stressed, and their 80's turbo unit was production based.
If that compound is urea, or a form of it, I remember reading something about it being related to the combustion, or to the treatment of iron blocks.
I have a relatively current Racetech or Racecar Rngineering magazine (funny how I read these religiously and am not involved in motorsport) where the BMW turbo units were spoken of in great detail. Unfortunately I am moving at the end of the month and packing has already commenced. My library is already packed
I feel warm and off the mark. Ironic since we are talking urea.