Jack vs. Tojo - Which was better? Why?

Those sound convincing sources. I was following Goodwin and Starking page 120 and a website q‹ó‹@ƒGƒ"ƒWƒ"ˆê——E"ú–{ŒR with the same weights. I am slightly distrustful of the website as it gives the same weight for the turbo version. Just possibly the higher weights include a turbosupercharger and associated piping.

I have just seen the helpful post Which Japanese fighter had dual-stage superchargers? with its link to Mitsubishi Ha 42 Model 41 Ru (Ha 214 Ru), Radial 18 Engine. That site says "Approximate (Weight on Stand): 1551.3kg (3420lb.)" for the Ha 214 with its turbosupercharger but without "Missing starter, generator, carburetor, spark plugs and data plate". Thus we have a moderately complete Ha 214, the photographs show that it does have two cam-rings and it is quite heavy.