Certain types of Vee engine have been built as inverted engines, most commonly for aircraft.

This inverted engine featured dual gear-driven camshafts with the valve rocker cover acting as the oil tank.

Hydrolock is common on radial and inverted engines (cylinders pointing downwards) when the engine sits for a long period.

It was the first aircraft with an inverted engine, a 696 cc Blackburne Tomtit, to fly in the United Kingdom.

Desoutter Mk.II Sports Coupé - Modified version of the Mk.I with new inverted engine, redesigned vertical rudder and windscreen, 13 built.

Karl Schopper, who proceeded to strengthen the structure and replace the Union G.Is troublesome inverted engines with upright Mercedes D.IIIs.

These were later re-engined with 130 hp (100 kW) de Havilland Gipsy Major engines; the air-cooled in-line inverted engines reduced drag, and gave improved fuel consumption.

Given that the Beaver uses an inverted engine - with dynofocal engine mass mount - the thrust line is lower than on the older Beaver 650 or many other high-wing pusher ultralights.

A 120 hp Gipsy III inverted engine was fitted to improve the view over the nose, removing the four upright cylinders of the Gipsy I from the pilot's line of sight.

A 28 inch cylinder inverted engine designed by Edward Bull, chief designer for Boulton and Watt, was put into Ding Dong in 1796; James Watt saw this as an infringement of his 'condenser patent'.

The DH.83 Fox Moth was a successful small biplane passenger aircraft from the 1930s powered by a single de Havilland Gipsy Major I inline inverted engine, manufactured by the de Havilland Aircraft Company.

The first engine later received an epicyclic propeller reduction gear made by Allison, an increase in its compression ratio, a Scintilla magneto ignition, and the new design cylinder banks of the 3A-1500 inverted engines, a design that had both spark plugs on the outside for easier maintenance.