General Motors and Isuzu have officially stitched together 1.5 million Duramax 6.6-liter diesel engines. The joint venture between the two manufacturers started in 1998, and now the DMAX plant employs 517 workers in a 584,000 square-foot facility. GM introduced the Duramax turbo diesel engine to the US market for the 2001 model year, and it can be found trucks like the Chevrolet Silverado HD and GMC Sierra HD as well as the full-size Chevrolet Express and GMC Savana vans. In its current configuration, the engine yields 397 horsepower and 765 pound-feet of torque at just 1,600 rpm.

Of course, the big oil burner has plenty of tuning potential as well. As you may recall, a Duramax-powered truck recently set the land speed record for towing a vehicle at 142 miles per hour.

GM owns 60 percent of the joint venture, with Isuzu laying claim to the remaining 40 percent. The facility is located in Chicago. You can take a look at the brief press release below for more information on the milestone.
Show full PR text
DMAX Builds 1,500,000th Duramax Diesel Engine

GM's segment-leading 6.6L powertrain achieves heavy-duty milestone

2012-11-16

MORAINE, Ohio – General Motors announced today the production of its 1,500,000th Duramax 6.6L diesel engine at its DMAX Ltd. Joint venture with Isuzu Motors Ltd.

DMAX Ltd, a joint venture between GM and Isuzu Motors Ltd., was established in 1998. GM introduced the Duramax diesel in the United States in its 2001 model year.

Available in GM's Chevrolet Silverado HD and GMC Sierra HD pickups, the engine delivers a segment-leading 397 horsepower at 3,000 rpm and 765 lb.-ft. of torque at 1,600 rpm. The Duramax is also available in GM's full-size Chevrolet Express and GMC Savana vans.

The award-winning Duramax 6.6-liter V-8 is a four-valve high pressure common rail direct injection diesel currently equipped with a diesel particulate filter to meet current stringent emissions requirements.

"Our Duramax diesel is one of the best in the industry," said Betty Wessel, DMAX Chief Financial Officer, "Duramax has become a great success story and is a world-class engine with superior quality, industry-leading horsepower and competitive fuel economy."

The milestone demonstrates the productivity of the employees and the joint partnership between GM, Isuzu and the IUE-CWA, said DMAX Chief Executive Officer Maho Mitsuya.

"This is a significant achievement for our facility and our employees here at DMAX," Mitsuya said. "We're committed to building quality into every engine – whether it's our first or our 1,500,000th.."

The 584,000 square foot DMAX facility employs 517 employees.


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  • 16 Comments
      Proghog
      • 2 Years Ago
      Now how about you guys make a 3.0 or a 4.5 liter diesel.
        photofill
        • 2 Years Ago
        @Proghog
        I've thought the same... just saw this too on wikipedia.org: LMK This engine is not yet commercially launched although it was touted in the automobile press as one of the most important new engine concepts for small trucks and SUVs by finally delivering a capable diesel engine in a compact enough package. The engine project is current on indefinite hold by GM. General Motors planned a 4.5-litre 72-degree[9] V8 for light-duty applications which would be built at GM's powertrain facility in Tonawanda, New York after 2009. Designed to fit in the same space as a Chevrolet Small-Block engine, it is expected to produce over 310 bhp (230 kW) and 520 lb·ft (705 N·m) of torque. It added urea injection, 29,000-psi (2,000 bar) piezo-electric common-rail fuel system over previous Duramax architecture.[10] It was initially targeted for the Chevy Silverado/GMC Sierra and Hummer H2.[11] Unlike previous Duramax engines, the 4.5-liter is planned to be designed and built entirely by GM, without assistance from Isuzu.[12] As of March 2009, a GM spokesperson stated the engine project has been put on an "indefinite hold" due to current economic conditions.[13] http://en.wikipedia.org/wiki/Duramax_V8_engine
        Michael
        • 2 Years Ago
        @Proghog
        +1 Pity, that's about 50% more displacement than 50% of Light Truck owners actually have a need for. I'll bid even lower: a modern 2.5 to 3.0 liter turbo diesel in I-5 or V-6 format, capable of 500 lb/ft at low RPM would serve a large number of truck owners well, while delivering significant fuel efficiency gains over this 6.6
        amie704
        • 2 Years Ago
        @Proghog
        A small diesel for light trucks maybe one day. :-/
        Vinuuz
        • 2 Years Ago
        @Proghog
        Indeed.. something that can power smaller vehicles that need not be HD rated! Like their full size crossovers and SUVs.
      HUMANMPC2000
      • 2 Years Ago
      I'd like to put one of those torque monsters in my '68 Impala.
      Matthew A Clarke
      • 2 Years Ago
      That is one sexy looking engine.
      The Wasp
      • 2 Years Ago
      That seems like quite an accomplishment. I'd like to know what kind of fuel efficiency they could achieve if they developed a smaller 200hp diesel engine for the Colorado.
        Joe
        • 2 Years Ago
        @The Wasp
        It's probably not nearly as good as your would want for the price. My 2.8 CRD liberty can do as high as 27 mpg with an after market engine tune that turns off exhaust circulation. It never got better than 25 mpg before the tune. On the plus side, I've never had below 21 mpg before or after regardless of driving conditions. It's a similar power to what you're suggesting (188 hp). With the several thousand dollar premium for the engine and the higher cost of fuel there's not really a net savings. It's not to say I don't love to drive it. The torque is great, but they could put a gasoline turbo motor and get just as good performance at similar sale price and lower price at the pump. If it were an option I'd rather have a 2.2 to 2.5 liter gasoline turbo for a small truck... unless they radically revamp emission regulations.
          The Wasp
          • 2 Years Ago
          @Joe
          Thanks for the info. There's a lot of fanaticism around hypothetical diesels so it's good to get some real input.
          amie704
          • 2 Years Ago
          @Joe
          Toyota has some good small diesels overseas like a D4D or something like that in a Tacoma sized truck. I still dream of something like that.
      50merc
      • 2 Years Ago
      260k and still going . 2001 Chevy Silverado extended cab. LOVE IT> =)
      Tim Tav
      • 2 Years Ago
      Zach, The facility is located in Moraine, Ohio. Not Chicago.
        photofill
        • 2 Years Ago
        @Tim Tav
        Ha yea, I'd like to know where in Chicago the article says they are made.
      arturo888
      • 2 Years Ago
      sexy
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