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 One that grew up to a 3 L version used in the Porsche 908.
See Also[]
| Piston engine configurations | |
|---|---|
| Type | Bourke • Controlled combustion • Deltic •Orbital • Piston • Pistonless (Wankel) • Radial • Rotary • Single • Split cycle • Stelzer • Tschudi |
| Inline types | H · U · Square four · VR · Opposed · X |
| Stroke cycles | Two-stroke cycle • Four-stroke cycle • Six-stroke cycle |
| Straight | Single · 2 · 3 · 4 · 5 · 6 · 8 · 10 · 12 · 14 |
| Flat | 2 · 4 · 6 · 8 · 10 · 12 · 16 |
| V | 4 · 5 · 6 · 8 · 10 · 12 · 16 · 20 · 24 |
| W | 8 · 12 · 16 · 18 |
| Valves | Cylinder head porting • Corliss • Slide • Manifold • Multi • Piston • Poppet • Sleeve • Rotary valve • Variable valve timing • Camless |
| Mechanisms | Cam • Connecting rod • Crank • Crank substitute • Crankshaft • Scotch Yoke • Swashplate • Rhombic drive |
| Linkages | Evans • Peaucellier–Lipkin • Sector straight-line • Watt's (parallel) |
| Other | Hemi • Recuperator • Turbo-compounding |
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