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Toyota 3E specs: 1.5L (89 ci) 4-cylinder, 73 x 87 mm (2.8740 x 3.4252 in) bore and stroke, 9.3:1 compression. Rated 78 hp, 1987–1989.
The Toyota 89ci (3E) is undersquare — the 3.4252" stroke exceeds the 2.874" bore by 16.1% — a layout that trades peak RPM for leverage and torque low in the range. The 3.4252" stroke puts mean piston speed at 4,000 ft/min around 7,000 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 22.3 ci (365 cc).
9.3:1 is low by modern standards and generally happy on regular pump fuel.
It is one of 4 engines in the Toyota 89ci family, all of them 89 ci — the differences between them are in compression, heads and rating, not displacement. 3 factory variants share these dimensions, rated at 78 hp across 1987–1989.
| Displacement | 89 ci / 1.5 L |
|---|---|
| Bore | 2.874" |
| Stroke | 3.4252" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 9.3:1 * |
| Bore/stroke ratio | 0.839 |
* Compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Advertised HP | 78 hp |
| Years | 1987–1989 |
| Bore/stroke character | 0.839 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,425 ft/min — conservative for a street engine |
| Displacement per cylinder | 22.3 ci |
| Static compression | 9.3:1 — 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 | — | 3E |
| 1988 | 78 hp | 3E |
| 1989 | — | 3E |
1 factory vehicle, 1987–1989. Each year opens that model's engine table.