Rebuild old engine of Aichi Machine Industry!

Orig title: 壊けた名古屋生まれのエンジンを修理する! Repair the old engine of Aichi Machine Industry!
Dude did a fabulous job of going thru the WW2 era engine. Quite impressive. Prolly get another 100years out of it.
Theme muzak ranges from ho-key to weird, and all points in between.