See other engines in this family
Volkswagen EA827 (1981–1984) specs: 1.7L (104.7 ci) 4-cylinder, 79.5 x 86.4 mm (3.1299 x 3.4006 in) bore and stroke. Rated 65-74 hp, 1981–1984.
The Volkswagen EA827 (1981–1984) is undersquare — the 3.4006" stroke exceeds the 3.1299" bore by 8.0% — a layout that trades peak RPM for leverage and torque low in the range. The 3.4006" stroke does not reach 4,000 ft/min of mean piston speed until about 7,050 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 26.2 ci (429 cc).
It is one of 8 engines in the EA827 family, the smallest at 104.7 ci. 6 factory variants share these dimensions, rated from 65 to 74 hp across 1981–1984.
| Displacement | 104.7 ci / 1.7 L |
|---|---|
| Bore | 3.1299" |
| Stroke | 3.4006" |
| Cylinders | 4 |
| Configuration | I4 |
| Bore/stroke ratio | 0.92 |
| Fuel type | gas |
|---|---|
| Advertised HP | 65–74 hp |
| Years | 1981–1984 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 1981 | 104ci net | 74 @ 5000 * | — | — |
| 1983 | 104ci net | 65 @ 5000 | 88 lb-ft @ 2800 | — |
| 1983 | 104ci net | 74 @ 5000 * | 90 lb-ft @ 3000 * | — |
| 1984 | 104ci net | 65 @ 5000 | 88 lb-ft @ 2800 | — |
| 1984 | 104ci net | 74 @ 5000 * | 90 lb-ft @ 3000 * | — |
Factory specification sheet. * Not yet cross-verified.
| Bore/stroke character | 0.920 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,401 ft/min — conservative for a street engine |
| Displacement per cylinder | 26.2 ci |
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 |
|---|---|---|
| 1981 | 74 hp | — |
| 1982 | 74 hp | — |
| 1983 | 65 hp | — |
| 1983 | 74 hp | — |
| 1984 | 65 hp | — |
| 1984 | 74 hp | — |
2 factory vehicles, 1981–1984. Each year opens that model's engine table.