Ford Power Stroke engine

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Ford Power Stroke engine
Manufacturer	Navistar International
Also called	International Diesel
Production	1983–
Class	OHV 90° V8 Diesel
Engine	420 in³ (6.9 L) 445 in³ (7.3 L) 6 L (5,954 cc) 6.4 L
Similar	Duramax V8 B series I6

Introduced in 1995, the Power Stroke is a family of turbodiesel truck engines used in Ford F-Series trucks, the Ford Econoline van, the Ford LCF commercial truck, and the Ford Excursion SUV. The Power Stroke is manufactured by Navistar International Corporation (International Truck and Engine Corporation) and is based on a design for a gasoline-powered V8 from International Harvester. Four different engines have been made based on this original design, the 420 in³ (6.9 L), 445 in³ (7.3 L), 6 L (5,954 cc), and 6.4 L; the last three have used the Power Stroke name. These engines are built in Indianapolis, Indiana and Huntsville, Alabama.

These engines primarily compete in the United States full-size pickup truck market with the Duramax V8 from General Motors/DMAX and the B series straight 6 from Dodge/Cummins.

In colloquial usage, the engine series is sometimes referred to by Chevrolet enthusiasts as the "PowerJoke".

1 6.9
2 7.3
3 6.0
4 6.4
5 Applications
6 See also
7 References
8 External link

[edit] 6.9

The 420 in³ (6.9 L) International Diesel was used by Ford from 1983 through 1987, though it did not use the Power Stroke name.

[edit] 7.3

For 1988, Ford replaced the old 420 in³ (6.9 L) with a larger 445 in³ (7.3 L) version. This was upgraded in 1993 with a optional turbocharger and again in mid 1994 when electronics and direct injection were added; the new configuration was named the Power Stroke and lasted through 2003.

[edit] 6.0

Unable to meet stricter emissions regulations, the 7.3 L Power Stroke was replaced by the 6.0 L during the 2003 year model. This version lasted through 2006 (2007 model year). Early 2002 and 2003 6.0 L Power Stroke engines proved unreliable^[1], costing Ford hundreds of millions of dollars in warranty repairs and leading to a recall and repurchase of 500 trucks.

The engine had an 3.74 in (95 mm) bore and 4.13 in (104.9 mm) stroke for a displacement of 6 L (5,954 cc). It produced 325 hp (242 kW) and 560 ft·lbf (759 N·m) with an 18:1 compression ratio.

[edit] 6.4

To meet even stricter emissions regulations for 2007, the 6.0 L Power Stoke was replaced by the 6.4 L Power Stroke. Ford introduced its redesigned 2008 Super Duty lineup in early 2007 equipped with the new 6.4 liter Power Stroke.

The new engine has a 3.86 in (98 mm) bore and 4.13 in (104.9 mm) stroke, resulting in a total calculated displacement of 6.3 L (6,333 cc). This new engine bumped the power up to 350 hp (261 kW) and torque to 650 ft·lbf (881 N·m). It also features dual sequential turbos, with a smaller turbo driving a bigger turbo resulting in better off-the-line power and better high speed power while reducing emissions. The engine also has a Diesel Particulate Filter making the emissions as clean or cleaner than gas engines. The engine computer is also programmed to periodocally inject extra fuel (regneration) to burn off accumulated soot.

Many more changes will take place with the usage of the 6.4 liter Power Stroke. Two major changes will be the fuel and oil. The fuel required will be Ultra-low sulfur diesel (15 PPM sulfur). The fuel is compatible with earlier diesel engines. The oil will be classified as CJ-4 vs. the previous CI-4. CJ-4 oil must be used in all diesel engines requiring the ULSD and is backwards compatible to approx 12 years for all diesels.

The 6.4 has already had recalls due to turbo seals blowing and oil into the exhaust stream thus throwing flames out the tailpipe.