RE: What planes are your Diesels in?
I installed my PAW .40 in an old VK Nieuport 17. It's mounted at 9 o'clock, a hole in the side of the cowl for adjusting the compression screw, exhaust goes straight down. I've mounted a 13 x 6 MA antique type (no longer available). Hasn't flown yet.
My smaller ones are unemployed right now.
Jim