Straight-8
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A Straight-8 is a straight engine with eight cylinders.
Unfortunately, a straight-8 is a very long engine and requires more main bearings to support the crankshaft adequately. In addition, the change in design of cars from a long engine compartment between separate fenders to the modern configuration beginning with the Chrysler Airflow and its shorter engine compartment led to straight-8 engines being phased out of automobile design.
Most straight-8 engines were used pre-World War II in expensive luxury and performance vehicles. Bugattis commonly used DOHC straight-8 engines. Postwar, the main users of the straight-8 were American luxury cars belonging to Chrysler (flathead configuration) and General Motors owned marques (flathead and OHV configuration), but the straight-8 lost favor by the 1950s, almost universally replaced by the V8. Ford never adopted the straight-8, using V8 or V12 engines from the 1930s on. The legendary Mercedes-Benz 300 SLR used a 3 liter Straight-8 outputting 290hp.
| Piston engine configurations | |
|---|---|
| Straight | Single, 2, 3, 4, 5, 6, 8, 9, 10, 12, 14 |
| V | 2, 4, 6, 8, 10, 12, 16, 20, 24 |
| Flat | 2, 4, 6, 8, 10, 12, 16 |
| W | 8, 12, 16, 18 |
| Other inline | H, VR, Opposed, U (Square), X |
| Other | Radial, Rotary, Pistonless (Wankel) |
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