The Porsche 3512 was a motor racing engine designed by Porsche for use in Formula One in the early 1990s.
Porsche 3512
A V12 engine is a twelve-cylinder piston engine where two banks of six cylinders are arranged in a V configuration around a common crankshaft. V12 engines are more common than V10 engines. However, they are less common than V8 engines.
1991 Porsche 3512 Formula One engine
1904 Craig-Dörwald racing boat engine
Two large marine engines
1917 Liberty L-12 airplane engine