straight-6

The straight-6 (also inline-6, I-6, or I6) is an internal combustion engine with six cylinders aligned in a single row. The name slant-6 is sometimes used when the cylinders are at an angle from the vertical.Usually a straight-6 was used for engine displacements between about 2.5 and 4.0 L. It was also sometimes used for smaller engines but these, although very smooth running, tended to be rather expensive to manufacture and they were inevitably physically longer than alternative layouts. The smallest production straight-6 was found in the Benelli 750 Sei motorcycle, displacing 747.7 cc (0.75 L / 45.6 cu in). The largest are used to power ships and have displacements of 1,000 L or more.
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