The Duratec is a range of four, six and twelve-cylinder gasoline engines produced by the Ford Motor Company, used in Ford, Caterham, Morgan, Ginetta cars and Cosworth.
Originally there was a 2.5 L V6 introduced with the Ford Contour. When the 2000 Mondeo was introduced, the 1.8 L and 2.0 L engines became Duratecs too.
Now there are engines of all sizes called Duratec. In North America, Ford uses the Duratec name on all its dual overhead cam 4 and 6 cylinder engines. In Europe, all Ford petrol engines are called Duratec.
Names reference
Duratec HE
The Duratec HE is the name used by Ford of Europe for its family of small straight-4 and V6 gasoline engines. The family includes 1.8 L (110 CID; 1796 cc) and 2.0 L (122 CID; 1999 cc) DOHC 16-valve engines and the 2.5 L V6 (also called the Duratec 25). European 1.8 L and 2.0 L Duratec HE engines are built at the Valencia Engine Plant in Spain. The compression rate is 10.8:1.
The Focus RS featured a turbocharged version of the 2.0 L Zetec unit producing 215 bhp (158 kW) and 310 N·m (229 ft·lbf) of torque, although badged a Duratec-RS. 18.1 L/100 km (13.0 mpg ) Focus C-Max and Focus Mk II versions use a drive-by-wire throttle to improve responsiveness.
Ford global straight-4
Beginning in 2004, Ford dropped the old 4-cylinder Zetec engines in favor of Mazda's MZR design. Thus, 2005 and present Duratec 4-cylinder engines are Mazdas. This includes the 2.0 L Duratec 20 the 2.3 L Duratec 23 and the all new 2.5 L Duratec 25 . The engine is currently built by Ford in Chihuahua, Mexico; Dearborn, Michigan; Valencia, Spain; Laguna, Philippines; and Nanjing, China.
Duratec 20
The 993 is a 2.0 L (122 CID; 1999 cc) version built in Chihuahua, Chihuahua, Mexico. Bore is 87.5 mm (3.44 in) and stroke is 83.1 mm (3.27 in).
It is used in the US/Argentinian Focus and the Brazilian Ford EcoSport. (European Fiesta ST, Ford Focus and Focus C-Max, Mondeo, S-Max, Transit and Galaxy use Duratec HE engines). On the 2007 Focus, output is 136 hp (101 kW) at 6000 rpm with 136 ft·lbf (184 N·m) of torque at 4250 rpm. The 2007 Focus sold in the US states of CA, NY, MA, VT and ME comes with the required PZEV emissions 20E version which produces 130 hp (97 kW) at 6000 rpm with 129 ft·lbf (175 N·m) of torque at 4000 rpm. The PZEV is available as an option in border states. The compression ratio for both versions is 10:1. On the 2008 Focus, output is 140 hp (100 kW) at 6000 rpm with 136 ft·lbf (184 N·m) of torque at 4250 rpm. The 2009 Focus Coupe with manual transmission has 143 hp. The 2008 Focus sold in the US states of CA, NY, MA, VT and ME comes with the required PZEV emissions 20E version which produces 132 hp (98 kW) at 6000 rpm with 133 ft·lbf (180 N·m) of torque at 4250 rpm. The PZEV is available as an option in border states. The compression ratio for both versions is 10:1. It has an aluminum engine block and aluminum DOHC cylinder heads. The cylinders are lined with cast iron. It uses SFI fuel injection, has 4 valves per cylinder and features fracture-split forged powder metal connecting rods, a one-piece cast crankshaft, and a cast aluminum or reinforced plastic intake manifold. It does not have variable valve timing. The power output is less than the Mazda version which does have VVT.
The plastic intake manifold on early versions has a major fault due to poor quality materials. The manifold has swirlplates mounted on a square shaft at the aperture where it mounts to the cylinder head. Early 4 cylinder Duratec engines can be ruined when the swirlplates break off and enter a cylinder. Most cases are of single swirlplates but also the shaft can wear and break. Early signs of this fault are evidenced by a ticking noise emanating from the front of the engine. This can occur as early as 25K miles, with failure typically occurring after about 90K miles.
Duratec 23
The Duratec 23 is a 2.3 L (140 CID; 2261 cc) variant of the Mazda MZR 2.3 L engine. Bore is 3.44 inches (87.5 mm) and stroke is 3.70 inches (94 mm). It has an aluminum engine block with cast-in iron cylinder liners and aluminum DOHC cylinder heads. It uses SFI fuel injection, has 4 valves per cylinder and features fracture-split forged powder metal connecting rods and a one-piece cast crankshaft.
The 23EW was built in Chihuahua, Chihuahua, Mexico for use in the American market Focus through the 2007 model year. "EW" in the Ford designation code denotes East-West configuration, or FWD. The Ford Focus version does not have VVT, and its output is 151 hp (113 kW) at 5750 rpm with 154 ft·lbf (209 N·m) of torque at 4250 rpm. Ford models to use the VVT equipped 2.3 L engines are the Ford Fusion, and Mercury Milan producing 160 hp (120 kW), similar to the original Mazda MZR 2.3 L which are all equipped with VVT.
The 23NS is built in Dearborn, Michigan for the Ford Ranger and North American market Mazda B-Series. These engines are tuned for torque-bias making them suitable for light-truck use and are not equipped with VVT or VICS. Output is 143 hp (107 kW) at 5250 rpm with 154 ft·lbf (209 N·m) of torque at 3750 rpm.
Applications:
- 23EW — FWD/AWD
- 2003-2007 Ford Focus
- 2005-2008 Ford Escape/Mazda Tribute
- 23NS — RWD
- 2001- Ford Ranger
- 2001- Mazda B-Series
The Duratec 23E is a version of the Duratec 23 with California PZEV emissions.
A high-efficiency Atkinson cycle version is used in the Ford Escape Hybrid, Mercury Mariner Hybrid, and Mazda Tribute Hybrid.
Duratec 25
The Duratec 25, or Duratec 2.5L I-4, is an evolution of the Duratec 23. 'Duratec 25' should not be confused with the similarly named 2.5L V6 Ford Duratec. The new Duratec 25 is an inline 4-cylinder engine design that is identical to the Mazda MZR 2.5L. The bore and stroke have increased to 89 mm x 100mm and as such now displaces 2488 cc | 151ci. Power has been increased to 171hp@6000 rpm and 171lb-ft@4500 rpm torque. A Hybrid Duratec 25 will be replacing the Hybrid Duratec 23.
Fuel saving features include adaptive knock control and aggressive deceleration fuel cutoff.
- 2010- Ford Fusion
- 2010- Mercury Milan
- 2009- Ford Escape
Duratec SCi
In 2001 , Ford introduced its first European Ford engine to use direct injection technology, badged SCi (Smart Charge injection) for Direct-Injection-Spark-Ignition (DISI). The range will include some turbocharged derivatives, including the 1.1-litre, three-cylinder turbocharged unit showcased at the 2002 Geneva Show. The 1.8 L was the first European Ford engine to use direct injection technology, badged SCi for Smart Charge Injection . This appeared in the Mondeo in 2003 and is today available on the 2.0 L engine as well as an expected 1.1 L version.
The SCi engines were designed at Ford's Cologne, Germany facility and are assembled in Valencia, Spain. The SCi engine is paired with a specially-designed six-speed manual transmission.
EcoBoost four-cylinder
Main article: Ford EcoBoost engineDuratec 8v
The Duratec 8v name is currently used on two different engines in the European Ford Ka and the 2003 Ford Fiesta:
- The 60 PS (59 hp/44 kW) 1.3 L (79.3 CID; 1299 cc) Duratec 8V is a renamed Endura-E engine,
- The 70 PS (69 hp/51 kW) 1.3 L (79.1 CID; 1297 cc), and 95 PS (94 hp/70 kW) 1.6 L (97.45 CID; 1597 cc) Duratec 8V is the South African and Braziliam-built Zetec-Rocam engine. The 1.3 is also used in the European Ford Ka. In Europe, the 1.3L & 1.6L is used in the Ka, only the 1.3L in Fiesta Mk6.
Mondeo V6
Main article: Ford Mondeo V6 engineThe 2.5 L and 3.0 L V6 Duratecs are evolutions of the same design, first used in the 1994 Ford Mondeo (1995 Ford Contour in US). It is a modern aluminum DOHC V6 with a 60° bank angle. They were also used in the Ford Cougar.
The Jaguar AJ-V6 engine and Mazda's AJ engine featured variable valve timing.
Duratec 25
The Duratec 25 is a 2.5 L (155 CID; 2544 cc) 60° V6 and was introduced in 1994. It was developed for the Ford Contour and used in the Ford Mondeo, Ford Cougar, Mercury Mystique, Jaguar X-Type, and others. The Duratec 25 was on the Ward's 10 Best Engines list for 1995 and 1996, and the SVT version made the list for 1998 and 1999.
An SVT version produced 195 hp (145 kW) and 165 ft·lbf (224 N·m) in 1998. Further improvements were
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