See other engines in this family
Nissan C specs: 1.0L (60 ci) 4-cylinder, 73 x 59 mm (2.8740 x 2.3228 in) bore and stroke, 7.5:1 compression. Rated 37 hp, 1959–1961.
The Nissan 60ci (C) is oversquare — the 2.874" bore exceeds the 2.3228" stroke by 23.7% — a layout that favors airflow and RPM over leverage at the crank. The 2.3228" stroke does not reach 4,000 ft/min of mean piston speed until about 10,350 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 15.0 ci (246 cc).
7.5:1 is low by modern standards and generally happy on regular pump fuel.
3 factory variants share these dimensions, rated at 37 hp across 1959–1961.
| Displacement | 60 ci / 1 L |
|---|---|
| Bore | 2.874" * |
| Stroke | 2.3228" * |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 7.5:1 |
| Bore/stroke ratio | 1.237 |
* Bore and stroke from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Advertised HP | 37 hp |
| Years | 1959–1961 |
| Bore/stroke character | 1.237 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 2,323 ft/min — conservative for a street engine |
| Displacement per cylinder | 15.0 ci |
| Static compression | 7.5:1 — low by modern standards, generally happy on regular pump fuel |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 1959 | 37 hp | C |
| 1960 | 37 hp | C |
| 1961 | 37 hp | C |
1 factory vehicle, 1959–1961. Each year opens that model's engine table.