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Chevrolet & GMC Colorado/Canyon Duramax Diesel Discussion Forum for the 2016+ Colorado & Canyon pickup with the 2.8L Duramax Diesel engine.

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  #11  
Old 12-25-2017, 07:49 AM
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The Dodge doesn't get much better mpg than a full sized 3/4 or 1 ton Diesel truck does from what I was told, and the Nissan Titan with the cummins only averages 14 mpg not towing based on a test run article on it. But they are actually full size 1/2 ton trucks aren't they ? They do have more hp and torque but it's a trade off. And cost more $
I’m curious to see how the Cummins R2.8 crate engine compares to the Duramax 2.8. Of course, it will be a harder comparison since people are putting them into many different things - Jeeps, Toyota pickups, etc - all with different gearing and other setups.
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  #12  
Old 12-25-2017, 10:10 AM
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Would be an interesting read on comparing those two diesels. Here is what I found Cummins R 2.8 crate engine has 161 hp and 267 ft pound of torque An M.S.R.P. of $8,999. "Ouch" And Cummins only offers a 90 day warranty on their engine and components.
Duramax 2.8 has 181 hp and 369 ft pound of torque. That surprised me.
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Last edited by cowboywildbill; 12-25-2017 at 04:56 PM.
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  #13  
Old 12-25-2017, 04:50 PM
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FourWheeler magazine has been doing a series of articles on the R2.8 including one to swap it into a Jeep and a roadtrip with several R2.8 powered vehicles. Unfortunately, they’re not reporting any “numbers” information yet other than some “guestimated” mileage numbers in the mid-twenties.
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  #14  
Old 12-25-2017, 04:59 PM
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Where exactly is "down here"? We tend to go south the last 3 weeks in April. That way I can pretty well tell you the exact date for the end of winter, at least for us. 2 years ago, my brother had cut the lawn twice while we were away. Love leaving in the snow and coming back to Spring.

Happy New Year to all.

Bill
We are in Sunny Central Florida. And did you say you had three weeks of summer ? I thought it was only two weeks. LOL
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Old 12-26-2017, 10:02 AM
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FourWheeler magazine has been doing a series of articles on the R2.8 including one to swap it into a Jeep and a roadtrip with several R2.8 powered vehicles. Unfortunately, they’re not reporting any “numbers” information yet other than some “guestimated” mileage numbers in the mid-twenties.
I would be interested in their mpg numbers also.
The problem with trying to figure out the economy of the cummins 2.8 is that it isn't designed for any particular vehicle. So everything from weight to gear ratios and such of the vehicle it is planted in would be a factor. I would think that with the right application it would get great mpg.
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Old 12-26-2017, 10:38 AM
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Plus, it is more likely to go into non-stock vehicles - where everything from weight to gear ratios to tire size to aerodynamics aren’t likely to be selected for best mileage, so it is not like comparing a mid-sized offering from Nissan with a mid-sized offering from GM.

Now, the roadtrip article did have a moderate Jeep Wrangler and a Nissan Frontier with R2.8s in them and a Colorado Duramax 2.8 along, so perhaps Cummins will be giving some comparative numbers at some point.
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  #17  
Old 12-26-2017, 09:26 PM
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One thing in it's favor, I don't think it uses a Cat or DPF. Not sure though. But not having those could help with economy.
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  #18  
Old 12-27-2017, 07:37 AM
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One thing in it's favor, I don't think it uses a Cat or DPF. Not sure though. But not having those could help with economy.
Not sure if economy has anything to do with it. At 9 grand, you would have to put on a pile of miles to justify the conversion. Suggest you would have to have another reason to do the conversion.

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  #19  
Old 08-07-2018, 05:50 PM
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I have had mine for about two weeks now. its impressive so far. I drive 86 miles one way to work and its averaging 28 MPG. not bad for a 4X4 truck. its a 2016 Z71 Colorado crew cab. I was driving a VW TDI Jetta that got 47 MPG until the wood goat (DEER) couldn't wait to cross the road. I have a 05 LLY Crew cab 4X4 dually that is still my favorite truck. Both are black. I have questions and will be back on later. Looking for transmission upgrades or tunes. and would like to add 33" tires and a really strong deer proof front bumper.
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  #20  
Old 08-07-2018, 06:52 PM
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Very Cool to hear Spivey,
We average 27.5 to 28 mpg worst is usually 25 mpg just running around, but almost all of that is in city type driving lots of traffic and lights.
On the highway it gets an honest 32 or more depending on how heavy my foot is.
Glad you are enjoying it.
And the 1/4 mile times are impressive. LOL "Not really" It ain't a race truck but it ain't a slug either.
Wow it's about time I had a fellow Colorado diesel owner on this page. Keep us updated and stay away from them dear.
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Last edited by cowboywildbill; 08-07-2018 at 06:56 PM. Reason: Additional comments
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