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Mazda F2 specs: 2.2L (133 ci) 4-cylinder, 86 x 94 mm (3.3858 x 3.7008 in) bore and stroke, 8.6:1 compression. Rated 85-110 hp, 1987–1993.
The Mazda 133ci (F2) is undersquare — the 3.7008" stroke exceeds the 3.3858" bore by 8.5% — a layout that trades peak RPM for leverage and torque low in the range. The 3.7008" stroke puts mean piston speed at 4,000 ft/min around 6,500 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 33.3 ci (545 cc).
8.6:1 is low by modern standards and generally happy on regular pump fuel.
It is one of 2 engines in the Mazda 133ci family, all of them 133 ci — the differences between them are in compression, heads and rating, not displacement. 12 factory variants share these dimensions, rated from 85 to 110 hp across 1987–1993.
| Displacement | 133 ci / 2.2 L |
|---|---|
| Bore | 3.3858" |
| Stroke | 3.7008" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 8.6:1 * |
| Bore/stroke ratio | 0.915 |
* Compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Advertised HP | 85–110 hp |
| Years | 1987–1993 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1989 | F2 net | 85 @ 4500 * | 118 lb-ft @ 2500 * | 8.6:1 * |
Factory specification sheet. * Not yet cross-verified.
| Bore/stroke character | 0.915 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,701 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 33.3 ci |
| Static compression | 8.6:1 — 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 |
|---|---|---|
| 1987 | 85 hp | F2 |
| 1988 | — | F2 |
| 1988 | 85 hp | F2 |
| 1989 | — | F2 |
| 1989 | 85 hp | F2 |
| 1990 | 85 hp | F2 |
| 1990 | 110 hp | F2 |
| 1991 | 85 hp | F2 |
| 1991 | 110 hp | F2 |
| 1992 | 85 hp | F2 |
| 1992 | 110 hp | F2 |
| 1993 | 85 hp | F2 |
3 factory vehicles, 1987–1993. Each year opens that model's engine table.