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Honda F22A6 specs: 2.2L (131.6 ci) 4-cylinder, 85 x 95 mm (3.3465 x 3.7402 in) bore and stroke, 8.8:1 compression. Rated 140 hp, 1991–1993.
The Honda F22A6 is undersquare — the 3.7402" stroke exceeds the 3.3465" bore by 10.5% — a layout that trades peak RPM for leverage and torque low in the range. The 3.7402" stroke puts mean piston speed at 4,000 ft/min around 6,400 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 32.9 ci (539 cc).
8.8:1 is low by modern standards and generally happy on regular pump fuel.
It is one of 10 engines in the F-series family, the smallest at 131.6 ci. 3 factory variants share these dimensions, rated at 140 hp across 1991–1993.
| Displacement | 131.6 ci / 2.2 L |
|---|---|
| Bore | 3.3465" |
| Stroke | 3.7402" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 8.8:1 |
| Bore/stroke ratio | 0.895 |
| Fuel type | gas |
|---|---|
| Advertised HP | 140 hp |
| Years | 1991–1993 |
| Bore/stroke character | 0.895 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,740 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 32.9 ci |
| Static compression | 8.8:1 — 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 |
|---|---|---|
| 1991 | 140 hp | F22A6 |
| 1992 | 140 hp | F22A6 |
| 1993 | 140 hp | F22A6 |
1 factory vehicle, 1991–1993. Each year opens that model's engine table.