2019 HD ram - 1000 ft lbs

Teth-Air

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I had a Duramax and it was fast but so is a gas job. My Rams have been so much better. You would think that just by making max torque at a slightly lower rpm would not make much difference but it is huge when holding highway speeds with a big load and not downshifting for the hills. I recently rode in a new Ford and it too was very good at holding speeds on the hills without downshifting. Low RPMs at high torque levels equate to excellent fuel economy. These new Cummins motors are just idling down the highway. They are going to last even longer than the old ones too and without revving they should get the urea usage down. The thirst for urea is the only part I dislike about the new diesels including my Ram. (only when loaded though)
 

lilduke

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It's not built for racing formula 1 cars out on the nurumbergring lol
 

Pink-Inc

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I had a Duramax and it was fast but so is a gas job. My Rams have been so much better. You would think that just by making max torque at a slightly lower rpm would not make much difference but it is huge when holding highway speeds with a big load and not downshifting for the hills.

Had the family up camping in the fall. We put on about 1000km towing the camper in my Cummins. Dad a long time Chevy guy and currently has an l5p was impressed how the Cummins would just grunt and pulls hills with ease. Deleted and tuned which helps. I just picked up a new duramax and it doesn't have near the bottom end the Cummins did
 

Caper11

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Lol. You mean different power curves because they make less power than a V8?

There is a huge difference between a 15 liter inline 6 in a highway tractor and the wimpy 6.7 in a Dodge pickup.

And if the emissions are so much better then why did Dodge recall over 200,000 pickups due to faulty emissions equipment in the dieselgate scandal?


Principal is the same, v-8’s were phased out for a reason. The ford and the chev could not make the emissions that why they had urea before ram. Question is how much longer will the V-8 chev and Ford diesels be able to make newer emissions????

That was not on the 6.7l cummins it was on the ecodiesel that had the emissions recall.
 
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ABMax24

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Principal is the same, v-8’s were phased out for a reason. The ford and the chev could not make the emissions that why they had urea before ram. Question is how much longer will the V-8 chev and Ford diesels be able to make newer emissions????

That was not on the 6.7l cummins it was on the ecodiesel that had the emissions recall.

Dodge had always run the straight 6 so a v8 wasn't there to phase out. As for emissions there isn't much more restricitons they can impose, they are allowed next to nothing for PM and NOx emissions as it is, and Ford and GM pass those standards.

The 6.7 was recalled for faulty emissions components.232,000 trucks were recalled due to faulty catalytic converters. Look it up if you don't believe me.
 

Summitric

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200,000 pickups due to faulty emissions equipment in the dieselgate scandal?

Hmmmmm, the dieselgate scandal is on the little diesel in the Grand Cherokee and 1500.... they had faulty catalytic convertor on some US only heavy duty rams, but no "dieselgate" on the heavy duties!!!
 

ABMax24

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Hmmmmm, the dieselgate scandal is on the little diesel in the Grand Cherokee and 1500.... they had faulty catalytic convertor on some US only heavy duty rams, but no "dieselgate" on the heavy duties!!!

A similar issue affects 232,000 Dodge Ram 2500 and 3500 vehicles with pre-2013 Cummins engines. Fiat Chrysler Automobiles spokesman Eric Mayne told Trucks.com that all customers except chassis cab owners have been notified of the recalls that began in 2016 and 2017. Those vehicles and the medium- and heavy-duty trucks all produce excessive amounts of smog-forming nitrogen oxide. CARB said the issue was discovered through portable mobile emissions systems that measured truck emissions while operating on streets and highways under typical operating demands and conditions.

https://www.trucks.com/2018/08/07/diesel-record-cummins-emissions-recall/
 

Cdnfireman

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Wtf does a v8 or i6 have to do with emissions?


Exactly. Cylinder pressures, temperatures etc will be very close between all the engines. There shouldn’t be any more emissions changes as they’re all at the latest specs and the trump administration has stopped any further emissions regulations changes. The increase in power output is negligible and ford and gm will quickly and easily match or exceed the Cummins. The V-8’s will always have more power output due to their ability to spin faster. The power output of any engine is dependent on the speed in RPM and the maximum torque produced.
The cummins was a fantastic engine earlier in its life, but to be fair as they increased the HP output over the years the reliability has fallen off. It’s no longer the bullet proof engine that it was. As they keep dumping more and more fuel into the Cummins to try and keep up, something is gonna give. I’m betting it’s gonna be the Chinese made CGI block, head and other engine castings.
 

Caper11

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Wtf does a v8 or i6 have to do with emissions?

Everything, the urea came out on the ford and chev diesels around 2010 cause they could not make that tier of emissions testing.

The cummins did not need urea till 2013.


All three needed the DPF in 2007 to meet that tier of emissions.
 

Teth-Air

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Wtf does a v8 or i6 have to do with emissions?

If you build a slower spinning motor with a lower rpm torque curve it does not need to spin faster to hold it's speed on hills. Every diesel I have had ran hotter at higher engine speeds and when boost pressures were high. It is at these higher temperatures that the diesels puke out more greenhouse gases and that is why next to no urea is used when unloaded. They can run cool combustion temperatures with just exhaust gas recirculation. The 8's tend to have less torque down low.
 

Caper11

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A similar issue affects 232,000 Dodge Ram 2500 and 3500 vehicles with pre-2013 Cummins engines. Fiat Chrysler Automobiles spokesman Eric Mayne told Trucks.com that all customers except chassis cab owners have been notified of the recalls that began in 2016 and 2017. Those vehicles and the medium- and heavy-duty trucks all produce excessive amounts of smog-forming nitrogen oxide. CARB said the issue was discovered through portable mobile emissions systems that measured truck emissions while operating on streets and highways under typical operating demands and conditions.

https://www.trucks.com/2018/08/07/diesel-record-cummins-emissions-recall/

A U.S. District Court judge in Detroit in February rejected motions by GM and Robert Bosch to dismiss a lawsuit alleging use of three emission defeat devices in 705,000 Chevrolet HD 2500 and 3500 Silverados and GMC Sierras from 2011-16.

Bosch said in a statement that it “takes the allegations of manipulation of the diesel software very seriously” and is cooperating while defending its interests in several jurisdictions. GM did not respond to a request for comment.



Out of the same article. The cummins was not apart of this lawsuit that I thought you were referring to.
 

skegpro

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If you build a slower spinning motor with a lower rpm torque curve it does not need to spin faster to hold it's speed on hills. Every diesel I have had ran hotter at higher engine speeds and when boost pressures were high. It is at these higher temperatures that the diesels puke out more greenhouse gases and that is why next to no urea is used when unloaded. They can run cool combustion temperatures with just exhaust gas recirculation. The 8's tend to have less torque down low.
Let's see some torque curves to substantiate this.
 

ABMax24

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If you build a slower spinning motor with a lower rpm torque curve it does not need to spin faster to hold it's speed on hills. Every diesel I have had ran hotter at higher engine speeds and when boost pressures were high. It is at these higher temperatures that the diesels puke out more greenhouse gases and that is why next to no urea is used when unloaded. They can run cool combustion temperatures with just exhaust gas recirculation. The 8's tend to have less torque down low.

Heat output is directly related to power output not torque output. So it stands to reason that at high rpm and high boost (where you make peak power BTW) that engine temperature would also go up.
 
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