Flat-8

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A flat-8 or horizontally-opposed-8 is an internal combustion engine in flat configuration, having 8 cylinders.

The most famous engine of this type is the Porsche air-cooled flat-8 engine introduced in a 1,5 L version for Formula 1 that grew up to a 3 L version used in the Porsche 908

Another example is the Australian made Jabiru Aircraft 5100. This is a 5.1 litre air-cooled engine for aircraft use.

Continental and Lycoming have both produced flat 8 aircraft engines as well. The Lycoming I0-720 and Continental IO-720 series of engines have been in production for several decades.

v • d • e
Reciprocating engines and engine configurations
Straight
Single · 2 · 3 · 4 · 5 · 6 · 8 · 9 · 10 · 12 · 14
Flat
2 · 4 · 6 · 8 · 10 · 12 · 16 · H
V
2 · 4 · 5 · 6 · 8 · 10 · 12 · 16 · 18 · 20 · 24
W
8 · 12 · 16 · 18
Other inline
U · Square four · VR · Opposed · X
Other
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