Bore, stroke, displacement and compression for all 3 Land Rover 183ci engines, compared side by side. Plus rod ratio and head specs where published.
| Displacement | 183 ci |
|---|---|
| Cylinders | 6 |
| Bore | 3.268–3.327" |
| Stroke | 3.504–3.634" |
| Compression | 10.5–16.1:1 |
| Advertised power | 254–542 hp |
| Years | 2014–2026 |
| Engine | Displacement | Bore × Stroke | CR | HP |
|---|---|---|---|---|
| AJ300 | 183 ci | 3.2677" × 3.6335" * | — | 355–542 |
| AJ126 | 183 ci | 3.3268" × 3.5039" | 10.5:1 | 340 |
| AJD-V6 | 183 ci | 3.3071" × 3.5433" | 16.1:1 | 254 |
Both bore and stroke vary across the family, so these are separate castings rather than variations on one block.
Compression spans 10.5:1 to 16.1:1, so fuel requirements differ meaningfully between members — worth checking before assuming parts interchange.
All are undersquare — stroke larger than bore, favouring torque low in the range.
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.