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Honda LEB specs: 1.5L (91 ci) 4-cylinder, 73 x 89.4 mm (2.8740 x 3.5197 in) bore and stroke, 13.5:1 compression. Rated 151 hp, 2019–2022.
The Honda 91ci (LEB) is undersquare — the 3.5197" stroke exceeds the 2.874" bore by 18.3% — a layout that trades peak RPM for leverage and torque low in the range. The 3.5197" stroke puts mean piston speed at 4,000 ft/min around 6,800 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 22.8 ci (373 cc).
13.5:1 is high for a production gasoline engine; running a ratio like that on pump fuel depends on chamber design and fuel delivery rather than the number alone.
It is one of 2 engines in the Honda 91ci family, all of them 91 ci — the differences between them are in compression, heads and rating, not displacement. 4 factory variants share these dimensions, rated at 151 hp across 2019–2022.
| Displacement | 91 ci / 1.5 L |
|---|---|
| Bore | 2.874" |
| Stroke | 3.5197" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 13.5:1 |
| Bore/stroke ratio | 0.817 |
| Fuel type | gas |
|---|---|
| Advertised HP | 151 hp |
| Years | 2019–2022 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2019 | LEB net | 151 | 197 lb-ft @ 0-3000 | 13.5:1 |
| 2020 | LEB net | 151 | 197 lb-ft @ 0-3000 | 13.5:1 |
| 2021 | LEB net | 151 | 197 lb-ft @ 0-3000 | 13.5:1 |
| 2022 | LEB net | 151 | 197 lb-ft @ 0-3000 | 13.5:1 |
Factory specification sheet.
| Bore/stroke character | 0.817 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,520 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 22.8 ci |
| Static compression | 13.5:1 — high enough that pump premium or better is normally required |
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 |
|---|---|---|
| 2019 | 151 hp | LEB |
| 2020 | 151 hp | LEB |
| 2021 | 151 hp | LEB |
| 2022 | 151 hp | LEB |
1 factory vehicle, 2019–2022. Each year opens that model's engine table.