See other engines in this family
The same engine also has a main page: Ford Duratec 3.5.
Mercury Duratec 35 specs: 213 ci (3.5L) 6-cylinder, 3.642 x 3.413 in (92.5 x 86.7 mm) bore and stroke. Rated 263 hp, 2008–2009. Used in the Lincoln MKX. DOHC.
The Mercury Duratec 35 is oversquare — the 3.6417" bore exceeds the 3.4134" stroke by 6.7% — a layout that favors airflow and RPM over leverage at the crank. The 3.4134" 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 6 cylinders displaces 35.5 ci (582 cc).
It is one of 11 engines in the Duratec family, the largest at 213 ci. 2 factory variants share these dimensions, rated at 263 hp across 2008–2009.
| Displacement | 213 ci / 3.5 L |
|---|---|
| Bore | 3.6417" |
| Stroke | 3.4134" |
| Cylinders | 6 |
| Configuration | V6 |
| Bore/stroke ratio | 1.067 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | DOHC |
| Fuel type | gas |
| Advertised HP | 263 hp |
| Years | 2008–2009 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2008 | net | 263 @ 6250 | 249 lb-ft @ 4500 | — |
| 2009 | net | 263 @ 6250 | 249 lb-ft @ 4500 | — |
Factory specification sheet.
| Bore/stroke character | 1.067 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|---|
| Mean piston speed at 6,000 RPM | 3,413 ft/min — conservative for a street engine |
| Displacement per cylinder | 35.5 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 |
|---|---|---|
| 2008 | 263 hp | Duratec 35 |
| 2009 | 263 hp | Duratec 35 |
7 factory vehicles, 2007–2019. Each year opens that model's engine table.