Continental Families of
Horizontally-Opposed Aircraft Engines

			Website Designation
			Manufacturer's Designation
			[Year of First Certification or Test]
Bore	Stroke	Displacement/Cylinder
inches	inches	cubic inches	2 cylinders	4 cylinders	6 cylinders	8 cylinders	12 cylinders
3.1250	3.625	27.80		O-110
				A-40
				[1931]
3.8750	3.625	42.75		O-170	O-255
				A-65	A-100
				[1938]	[1945]
4.0625	3.625	46.99		O-190	O-280
				C-85	C-125
				[1945]	[1945]
4.0625	3.875	50.23		O-200	O-300
				C-90	C-145
				[1947]	[1947]
				OL-200	OL-300
				[1986]	[1987]
4.4375	3.875	59.93		O-240	O-360
				[1971]	[1962]
4.8750	3.625	67.66		O-270	O-405	O-540
				Tiara 4	Tiara 6	Tiara 8
				[1970]	[1969]	[1970]
5.0000	4.000	78.54		O-315	O-470
					E-185
				[1952]	[1947]
5.2500	4.000	86.59		O-346	O-520
				[1962]	[1963]
5.1250	4.250	87.67			O-526
					[1957]
5.2500	4.250	92.00		O-368	O-550
				[1979]	[1983]
				OL-370	OL-550
				[1990]	[1990]
5.5000	5.000	118.79					O-1430
							[1938]