I am currently working for a company restoring 2 Churchill tanks, one to be put together as a tank again, and one restored in its mine clearing capacity.
Having worked on both, and indeed a third which is already restored, including removing and sripping one engine completely, I am suprised to see the engine described as horizontally opposed. Even in your photos the piston heads are clearly visible. This surely defines a flat 12? There is one large and very heavy crankshaft, unlike the 6 cylinder vertically opposed and indeed supercharged K60 diesel engine,(installed in the 432 armoured personel carrier) which has two.
Am I missing something?
Finally does anyone have a spare engine, or parts for sale? It would really help for the Flail rebuild.