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Ford Cologne 2.9 EFI specs: 179.1 ci (2.9L) 6-cylinder, 3.661 x 2.835 in (93 x 72 mm) bore and stroke, 9:1 compression. Rated 140 hp, 1986–1990.
The Ford Cologne 2.9 EFI is oversquare — the 3.6614" bore exceeds the 2.8346" stroke by 29.2% — a layout that favors airflow and RPM over leverage at the crank. The 2.8346" stroke does not reach 4,000 ft/min of mean piston speed until about 8,450 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 29.8 ci (489 cc).
9:1 is low by modern standards and generally happy on regular pump fuel.
It is one of 2 engines in the Ford 179ci family, all of them 179.1 ci — the differences between them are in compression, heads and rating, not displacement. 5 factory variants share these dimensions, rated at 140 hp across 1986–1990.
| Displacement | 179.1 ci / 2.9 L |
|---|---|
| Bore | 3.6614" |
| Stroke | 2.8346" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 9:1 * |
| Bore/stroke ratio | 1.292 |
* Compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Firing order | 1-4-2-5-3-6 |
| Advertised HP | 140 hp |
| Years | 1986–1990 |
| Bore/stroke character | 1.292 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 2,835 ft/min — conservative for a street engine |
| Displacement per cylinder | 29.8 ci |
| Static compression | 9:1 — 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 |
|---|---|---|
| 1986 | 140 hp | Cologne 2.9 EFI |
| 1987 | 140 hp | Cologne 2.9 EFI |
| 1988 | 140 hp | Cologne 2.9 EFI |
| 1989 | 140 hp | Cologne 2.9 EFI |
| 1990 | 140 hp | Cologne 2.9 EFI |
2 factory vehicles, 1986–1990. Each year opens that model's engine table.