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Ram Updates Its Diesel Option For 1500 - How Does It Compare To GM's New Diesel?

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ram_ecodiesel_hood 19.jpg

John Goreham
Contributing Writer, GM-Trucks.com
6-11-2019

Ram revealed the specs for its updated EcoDiesel V6 engine in the 1500 this week. The big news is 480 ft-lb of torque in a light-duty truck. Towing is also very impressive with towing up to 12,560 pounds. Finally, Ram says that it expects to also have class-leading fuel economy from its 3.0-liter turbo-diesel engine-equipped truck. 

 

"The new Ram 1500 EcoDiesel is America’s most powerful half-ton diesel pickup, following up on Ram’s Heavy Duty torque leadership and achieving what no other manufacturer has, with up to 480 lb.-ft. of torque in a 3.0-liter engine,” said Reid Bigland, Head of Ram Brand. “The all-new EcoDiesel engine and our eTorque mild-hybrid powertrain technologies deliver the highest available fuel efficiency for our Ram 1500 customers.”

ram_ecodiesel_engine 19.jpg

Ram says it will also pair its diesel with the only air suspension in the class. Being able to lower the truck at highway speeds will likely help with fuel efficiency.  Ram's new 3.0-liter EcoDiesel V-6 uses dual overhead camshafts (DOHC) with four valves per cylinder and a 60-degree angle between the cylinder banks. The block is cast compacted graphite iron, which Ram says provides strength to dampen vibrations, but weighs less than grey cast iron. Ram uses a compacted graphite iron bedplate to add rigidity to the block. The new EcoDiesel has a forged steel crankshaft and connecting rods for strength and durability. Ram's aluminum alloy pistons are cooled on the underside via oil jets. Heat-treated aluminum cylinder heads have individual bearing caps to reduce friction and minimize NVH. The engine's chain-driven overhead camshafts employ roller-finger followers.

 

Ram pointed to these specific upgrades as significant: 

-A new-generation water-cooled turbocharger with variable geometry turbine (VGT) increases efficiency and responsiveness during transient conditions
-Redesigned cylinder head intake ports improve swirl and flow, increasing performance and fuel economy
-The exhaust gas recirculation (EGR) system design has been updated to a dual loop (low and high pressure) system. The added low-pressure circulation system draws gases after the diesel particulate filter, thus minimizing turbocharger energy losses, which increases fuel economy
-The compression ratio has been optimized to 16.0:1 from 16.5:1
-High-pressure (29,000 psi/2,000 bar) direct-injection fuel injector nozzles were redesigned to match the newly designed and optimized combustion chamber
-Lightweight aluminum alloy pistons were completely redesigned to include thinner rings and low-friction coating on the pin and side skirts to reduce losses
-NVH has been reduced by offsetting piston pin by 0.3 millimeters from the centerline; thus, minimizing mechanical noises
-The lower portion of the two-piece oil sump uses a lightweight sandwiched polymer/metal material that further reduces NVH
-The dual vacuum pump system uses electric and a new mechanical low-friction pump with new blades that improve overall system efficiency

 

Ram will not build this engine in the United States. Rather, it will be produced FCA Cento facility in Ferrara, Italy and imported. Watch for price and fuel efficiency new in about two months. The engine will be available in Ram trucks starting this early winter of 2019 unless it is delayed for emissions testing or other reasons. 

 

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Competition is good.  I think the Duramax inline six will be a better engine.  It has larger rod and main journals and having a stout bottom end means you can add power up top.  Plus less vibrations.

 

There will always be a battle back and forth between the big 3.  

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I remember back in the day, my Dad had a 1985 Chevy Blazer with the 6.2L Diesel.

He hated that engine and only had the truck for about a year due to all of the problems with it.

Technology has come a long way since then and it is good to see other engine choices out there coming ahead.

Competition is good indeed.

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Ram is fighting hard to establish itself as being better than GM and wanting the number 2 best selling truck spot bad.  they are doing a good job at it.  They must have hired some pretty good engineers and what not. 

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20 ft-lb more? That's good!

I'd still choose the inline six.

I'd also take an 2.7 inline four over a 2.7 V6.

 

so long

j-ten-ner

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I usually always prefer in I/L-6 over a V6, but this V6 diesel has evolved in europe for quite some time.  The GMs I-6 diesel will no doubt have its growing pains (especially considering you'd have to pull the engine to replace the timing chain/tensioners/guides, which you'd have to do at least once before its end-of-life).

 

Looking forward to a diesel-half ton contest on Youtube between the big 3.

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