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Honda H22A1 specs: 2.2L (132 ci) 4-cylinder, 87 x 90.7 mm (3.4252 x 3.5709 in) bore and stroke, 10:1 compression. Rated 190 hp, 1993–1996.
The Honda H22A1 is close to square: 3.4252" bore against 3.5709" stroke, within 4.1%, which splits the difference between a high-revving layout and a torque layout. The 3.5709" stroke puts mean piston speed at 4,000 ft/min around 6,700 RPM, which is where a production bottom end is generally considered at its limit. A rod ratio of 1.577 is in the range most production engines fall in. Each of the 4 cylinders displaces 33.0 ci (541 cc).
10:1 on aluminum heads is in the range that usually runs on pump premium; aluminum sheds heat faster than iron, which makes the same number a little more forgiving.
It is one of 7 engines in the H-series family, the smallest at 132 ci. 4 factory variants share these dimensions, rated at 190 hp across 1993–1996.
| Displacement | 132 ci / 2.2 L |
|---|---|
| Bore | 3.4252" |
| Stroke | 3.5709" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 10:1 * |
| Rod length | 5.63" |
| Rod ratio | 1.577 |
| Bore/stroke ratio | 0.959 |
* Compression ratio from a single source; not yet cross-verified.
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 190 hp |
| Years | 1993–1996 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1993 | H22A1 net | 190 | 158 lb-ft | — |
| 1994 | H22A1 net | 190 | 158 lb-ft | — |
| 1995 | H22A1 net | 190 | 158 lb-ft | — |
| 1996 | H22A1 net | 190 | 158 lb-ft | — |
Factory specification sheet.
| Bore/stroke character | 0.959 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,571 ft/min — in the range typical of performance street engines |
| Rod ratio | 1.577 — moderate — the range most production V8s fall in |
| Displacement per cylinder | 33.0 ci |
| Static compression | 10:1 — in the range that usually runs on pump premium |
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 |
|---|---|---|
| 1993 | 190 hp | H22A1 |
| 1994 | 190 hp | H22A1 |
| 1995 | 190 hp | H22A1 |
| 1996 | 190 hp | H22A1 |
1 factory vehicle, 1993–1996. Each year opens that model's engine table.