See other engines in this family
Porsche 911/51, 911/61 specs: 2.4L (143 ci) 6-cylinder. Rated 140 hp, 1972–1973. Used in the Porsche 911. Rod ratio and piston speed worked out.
Each of the 6 cylinders displaces 23.8 ci (391 cc).
It is one of 4 engines in the Porsche 143ci family, all of them 143 ci — the differences between them are in compression, heads and rating, not displacement. 2 factory variants share these dimensions, rated at 140 hp across 1972–1973.
| Displacement | 143 ci / 2.4 L |
|---|---|
| Cylinders | 6 |
| Fuel type | gas |
|---|---|
| Advertised HP | 140 hp |
| Years | 1972–1973 |
| Displacement per cylinder | 23.8 ci |
|---|
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 |
|---|---|---|
| 1972 | 140 hp | 911/51, 911/61 |
| 1973 | 140 hp | 911/51, 911/61 |