Ford Mondeo V6 engine

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Mondeo V6
ManufacturerFord Motor Company
PredecessorFord Vulcan
Mazda K series
SuccessorFord Cyclone
Displacement2.5 L (2544 cc) – 3.0 L (2967 cc)

Ford Motor Company's modern 2.5 L and 3.0 L V6 automobile engines are evolutions of the same design, first used in the 1994 Ford Mondeo. This line is sold under the brand name "Duratec", as are many other engines.

The Mondeo V6 is a modern aluminum DOHC V6 with a 60° bank angle. The primary engineering input came from Porsche, who were developing a similar V6 before selling the engineering to Ford, and Cosworth, who helped with cylinder head manufacturing. The Jaguar AJ-V6 engine is similar but adds variable valve timing. Mazda's AJ version also has this feature.

Duratec 25

The Duratec 25 is a 2.5 L (2544 cc) 60° V6 and was introduced in 1994. It was developed for the Ford Mondeo and also used in the Ford Contour and others. Bore is 82.4 mm and stroke is 79.5 mm.

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.

Duratec 25 SVT

An SVT version produced 195 hp (145 kW) and 165 ft·lbf (224 N·m) in 1998. It included a larger throttle body from the Duratec 30, a new cone-shaped air filter, and abrasive flow machining processing on the intake manifold. SVT specific cams, a lighter flywheel and low-restriction exhaust complete the picture. Further improvements were made in 1999 that raised power output to 200 hp (149 kW) and 169 ft·lbf (229 N·m) and were carried over in the 2000 model. The SVT engine was used in the 1998 to 2000 Ford Contour SVT.

Duratec VE

The 2.5 L, 170 hp (130 kW) V6 used in the third generation Ford Mondeo is called the Duratec VE. Displacement was decreased from 2544 to 2495 cc. They were also used in the Ford Cougar.

Mazda AJ

Mazda used the Duratec 25 block and camshaft in their 2000 MPV. However, they reduced the size from 2.54 L to 2.49 L to keep under a 2.5 L tax cap in Japan. This was accomplished with a reduction of the bore from 82.420 mm to 81.660 mm (both round to 3.2 in). The engine produced 170 hp (127 kW) at 6250 rpm and 165 ft·lbf (224 N·m) of torque. It was replaced in 2002 with the larger 3.0 L Duratec 30-based Mazda AJ.

Duratec 30

Ford's standard DOHC V6 is known as the Duratec 30. It was introduced in 1996 as a replacement for the 3.8 L Essex engine in the Ford Taurus and Mercury Sable. It has 3.0 L (2967 cc) of displacement and produces between 200 and 240 hp (150 and 180 kW). The same engine is used by the Jaguar S-Type, Lincoln LS, Mazda MPV, Mazda6, Mondeo ST220 and many other Ford vehicles. It is essentially a bored-out (to 88.9 mm) Duratec 25 and is built in Ford's Cleveland Engine #2 plant. A slightly modified version for the Ford Five Hundred entered production at the Cleveland Engine #1 plant in 2004.

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 and an assembled cast aluminum intake manifold.

There are two key versions of the Duratec 30:

  • DAMB - The Lincoln LS and Jaguar AJ30 versions have direct-acting mechanical bucket (DAMB) tappets. Output is 232 hp (173 kW) at 6750 rpm with 220 ft·lbf (298 N·m) of torque at 4500 rpm.
  • RFF - The Taurus/Sable/Escape version used roller finger followers (RFF) instead and produced 201 hp (150 kW) at 5900 rpm with 207 ft·lbf (281 N·m) of torque at 4400 rpm.


RFF engine in a 2006 Mercury Montego




VVT engine in a 2006 Mercury Milan

The 2006 Ford Fusion, Mercury Milan, and Lincoln Zephyr feature a version of the Duratec 30 utilizing variable valve timing. The VVT is a RFF engine derived from the Mazda MZI and does not have the mechanical buckets as on the Lincoln LS version.

The engine has an output of 221hp (165kW) at 6250rpm, and 278 N·m (205 lb·ft) of torque at 4800rpm.

In second generation of the engine, it is updated to run on E85. Engine has an output of 240hp@6550rpm and 223lb-ft@4300rpm. Engine now includes Cam Torque Actuated Variable Cam Timing developed with Borg-Warner. Fuel saving features include adaptive knock control and aggressive deceleration fuel cutoff.[1]

First generation

Second generation

Mazda MZI

Mazda's MZI version adds variable valve timing, as does Jaguar's AJ30. It displaces 2967 cc with an 89 mm bore and 79.5 mm stroke. Output (on the MPV) is 200 hp (150 kW) at 6200 rpm with 200 ft·lbf (271 N·m) of torque at 3000 rpm. Note that the MZI name is also used in Europe on Mazda's version of the Ford Sigma I4.

  • 2002-2004 Mazda MPV, 200 hp (150 kW)
  • 2003-2005 Mazda6, 220 hp (160 kW)
  • 2006 Mazda6, 215 hp (160 kW)
  • 2007-2008 Mazda6, 212 hp (158 kW)

Duratec ST

The 3.0 L, 226 hp (169 kW) V6 used in the Mondeo ST220 is called the Duratec ST.

Duratec SE

The 3.0 L, 204 hp (152 kW) V6 in the Mondeo Titanium is called the Duratec SE.


See also