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Ford Mazda VB 1.8 SOHC specs: 110 ci (1.8L) 4-cylinder, 3.071 x 3.701 in (78 x 94 mm) bore and stroke. Rated 74 hp, 1972–1978. Used in the Ford Courier.
The Ford Mazda VB 1.8 SOHC is undersquare — the 3.7008" stroke exceeds the 3.0709" bore by 17.0% — a layout that trades peak RPM for leverage and torque low in the range. The 3.7008" stroke puts mean piston speed at 4,000 ft/min around 6,500 RPM, which is where a production bottom end is generally considered at its limit. Each of the 4 cylinders displaces 27.5 ci (451 cc).
7 factory variants share these dimensions, rated at 74 hp across 1972–1978.
| Displacement | 110 ci / 1.8 L |
|---|---|
| Bore | 3.0709" |
| Stroke | 3.7008" |
| Cylinders | 4 |
| Configuration | I4 |
| Bore/stroke ratio | 0.83 |
How to tell which you have: Every US 1972-76 Courier 1.8 is the Mazda VB (1,796 cc, 78 x 94 mm); the VC was not sold in the US.
| Fuel type | gas |
|---|---|
| Advertised HP | 74 hp |
| Years | 1972–1978 |
| Bore/stroke character | 0.830 — undersquare — stroke exceeds bore, which favours low-end torque |
|---|---|
| Mean piston speed at 6,000 RPM | 3,701 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 27.5 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 |
|---|---|---|
| 1972 | 74 hp | Mazda VB 1.8 SOHC |
| 1973 | 74 hp | Mazda VB 1.8 SOHC |
| 1974 | 74 hp | Mazda VB 1.8 SOHC |
| 1975 | 74 hp | Mazda VB 1.8 SOHC |
| 1976 | 74 hp | Mazda VB 1.8 SOHC |
| 1977 | — | Mazda VB 1.8 SOHC |
| 1978 | — | Mazda VB 1.8 SOHC |
1 factory vehicle, 1972–1978. Each year opens that model's engine table.