The first engine looks like a Packard Merlin of WW11 vintage built under license from Rolls Royce to power Spitfire & Hurricanes but was also used in Lancasters, second motor looks like Ferrari
OK, one is a Ranger V770 inverted V12 aircraft engine. The other is a Volker V12 from 1937. The Volkers raced at Indianapolis from 1937 to 1947 and never did much good. One was updated in 1977 and a car was being built for it but never got finished. The patternmaker spelt Volker as Voelker which I was told really got up Charlie Volker's nose.
The aero engine is a Liberty L4. A four cylinder engine based on the Liberty V12. It was intended for trainer aircraft but other engines were readily available and the L4 never went into production.
The other is a Meyer and Drake "Offenhauser 111" centrifugally supercharged and intercooled. The supercharger is driven by a gear on the end of the crankshaft at several times engine speed. The plate intercooler is a piece of metalworkers art.
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