REAL DEAL AUTO BLOG

BEST (6.0), BETTER (6.4), BESTEST (6.7L) Powerstroke

Posted in Uncategorized by wolferadio11 on November 17, 2009

The International Harvester 7.3L Stroke did to trucks the stuff of what the hemispherical combution chamber did for Hazzard County, or what Cummins did for Dodge 🙂  Nonetheless, 97 version of the all new powerstroke branded a 99 was a sonofabitch, RIP.

That aside, Ford is ignoring the 13MPG embarassment they pushed out year before last in the ALL NEW 6.4L stroke that was planned with such precision, Obama couldn’t have engineered it with more precision.  The problem is the damn thing (NEW 6.4L) get’s 12 miles to the gallon pre break in period.   In Navistar’s defence, Cummins and Izuzu was burdened with the same particulate filter issues that killed their MPG as well. 

I’m excited about what the new Stroke claims to deliver, and Ford has never been more game on since the model T.  I’m going to blindly jump on the bandwagon that the new stroke will be awesome.  As well it should be: 3rd times a charm-takes 3 trys to get it right-etc.  (6.0-6.4-6.7)..Whats wrong with putting a particulate filter on a 7.3?

Ford has developed a new 6.7-liter turbocharged V8 diesel, branded “Power Stroke,” which it will be fitting into its 2011 F-Series Super Duty pickups. This all-new engine was engineered by Ford—they used CAD and CAE extensively—tested by Ford–“This all-new diesel engine has been so extensively tested both in the lab and in the real world that we’re confident we’re giving our customers the most reliable and productive powertrain available today,” said Derrick Kuzak, Ford group vp of Global Product Development—and is being manufactured by Ford—at its Chihuahua Engine Plant.

6.7-Liter Power Stroke(R) V-8 Turbocharged Diesel Engine

All of which is to say that this truly could be considered to be “Built Ford Tough.”

The engine block is made with compacted graphite iron (CGI). Ford says this is the first use of the material for a block in this class of vehicle; it has used the material for blocks that go into other types of vehicles around the world.

The thing to know about CGI: It is about twice as strong as gray cast iron, which is certainly important in diesel applications.

The cylinder heads, which feature dual water jackets, are made of aluminum. However, to help assure that they’re capable of handling firing pressures near 2,600 psi, they are each attached to the deep-skirted block with six head bolts, not four. Essentially, the cylinder heads are flipped around compared with typical V8 architectures in order to accommodate exhaust manifolds in the valley of the engine and the intake outboard. Why? The volume of the exhaust system is reduced, which (1) feeds air into the single-sequential Honeywell turbocharger more quickly for improved throttle response and (2) improves overall thermal management for better fuel efficiency (think of it as what needs to be hot is kept hot and what needs to be, well, cooler, remains so).

There is a Bosch common-rail fuel injection system that operates at pressures up to 30,000 psi that works with a unique piston design to help achieve the sort of power that Super Duty drivers expect while meeting lower emissions. The injector system can deliver up to five injection events per cylinder per cycle via eight holes per piezo injector, all of which helps create a more through burn: “When the main injection occurs, we can mitigate NVH because we have a slower ignition process. When the fuel burns, it doesn’t burn with a traditional pop or bang. The direct-injection system is calibrated and phased for optimum power, fuel efficiency and NVH,” said Adam Gryglak, lead 6.7-liter diesel engineering manager (pictured).

To meet NOx requirements, there is a three-stage after-treatment system. First, there is the Diesel Oxidation Catalyst (DOC), that takes the exhaust that oxidizes hydrocarbons into water and CO2 at about 250°C; this heat is also used as part of thermal management for the entire exhaust system. Second, the NOx in the exhaust is transformed into water and nitrogen by Selective Catalytic Reduction (SCR). In this step, the exhaust gas is dosed with Diesel Exhaust Fluid (DEF;67.5% water; 32.5% urea). When heated, DEF becomes ammonia and CO2. So once all of this enters the SCR chamber, which has a catalyzed substrate, and is literally mixed with a corkscrew-like device and heated, the transformation occurs. The third step is for the result to be put through a Diesel Particulate Filter (DPF) where any soot is captured and eventually burned away at during occasional regeneration events, which occur at more than 600°C.

8 Responses

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  1. m. dunaway said, on January 17, 2010 at 3:41 PM

    CAN I FLAT TOW F250 4X4 2011

  2. Scott Reynolds said, on January 19, 2010 at 9:16 PM

    Hey ford i love your TRUCKS my famly has oned ford trucks as long as i can rember and will allways one fords cus their the best keep up the GOOD work!

    • sara chrlet said, on December 14, 2012 at 6:04 PM

      dumb ass

  3. Justin hopkins said, on January 22, 2010 at 9:06 AM

    hi i love your truck its kinda like ours ares is a f-250 dually 1997 7.3 turbo diesel

  4. Jerry Schmidt said, on January 31, 2010 at 4:22 PM

    I look forward to the results of Fords new 6.7 and the six-speed trans. Now that Ford is behind the drivers seat, it is where I will be.

  5. Ronnie Edwards said, on February 14, 2010 at 11:32 AM

    I have owned Ford diesels back to the beginning with a 1986 6.9, a 7.3, (4)6.0’s a not so good 6.4 can’t wait to sit behind the wheel of this new one. Ford is the only truck for me and my business top quality and very dependable.

  6. steve said, on February 17, 2010 at 4:04 PM

    had the 99 f350 SRW 7.3 bullet proof, had the 6.0 F350 SRW 2004 and 2006,liked it a lot very good all round other than a few design problems that were eventually fixed, had F450 2008 6.4 , wow what a monster ,pulled my toyhauler and gear all over North America 90,000 klimoteres at 30 below to 127 above F with a total weight of 25,000 pounds
    1999 not bad milage,2004-2006 better milage,2008 sad milage but monster of truck,hey what can i say -just ordered the new ford 6.7 diesel and can’t wait as ford has never let me down.

  7. mark said, on September 7, 2010 at 8:14 AM

    i had a 1994 7.3 liter powerstroke that we hauled water with and i allways thought it was a beast but i never thought there was such a difference in the torqe of a ford than a chevy diesel the ford pulled our big 700 gal. water tank way better than a duramax lol piss on chevy

    built ford tough


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