Bore, stroke, displacement and compression for all 2 Mercedes-Benz 146ci engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 146 ci |
|---|---|
| Cylinders | 4 |
| Bore | 3.579–3.583" |
| Stroke | 3.638" |
| Advertised power | 62 hp |
| Years | 1978–1979 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| OM616 (2404 cc) | 146 ci | 3.5827" × 3.6378" | — | 62 |
| OM616 (2399 cc) | 146 ci | 3.5787" × 3.6378" | — | 62 |
Stroke is constant at 3.6378" across the family — the displacement spread comes from bore, so these share a crank and differ in the block.
Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.