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Mercury 223ci (1962) specs: 223 ci (3.7L) 6-cylinder, 3.625 x 3.60 in (92.1 x 91.4 mm) bore and stroke, 8.4:1 compression. Built 1962.
The Mercury 223ci (1962) is close to square: 3.625" bore against 3.6" stroke, within 0.7%, which splits the difference between a high-revving layout and a torque layout. The 3.6" stroke puts mean piston speed at 4,000 ft/min around 6,650 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 37.2 ci (609 cc).
8.4:1 is low by modern standards and generally happy on regular pump fuel.
| Displacement | 223 ci / 3.7 L |
|---|---|
| Bore | 3.625" |
| Stroke | 3.6" |
| Cylinders | 6 |
| Configuration | I6 |
| Compression ratio | 8.4:1 |
| Bore/stroke ratio | 1.007 |
| Block material | cast iron |
|---|---|
| Valvetrain | OHV |
| Fuel type | gas |
| Years | 1962 |
| Bore/stroke character | 1.007 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,600 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 37.2 ci |
| Static compression | 8.4:1 — low by modern standards, generally happy on regular pump fuel |
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1 factory vehicle, 1962. Each year opens that model's engine table.