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Old 11-07-2009, 11:24 AM   #1 (permalink)
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Some engineer types discuss ecomodding options for a 2004 quad cab Dodge 2500 pickup

Quote:
Trading is not an option. I use this truck everyday and for what it is, it gets great gas milage. If there is room for improvement and an chance to learn something, then why not. I can do all the work myself. I am just looking for the best place to start.
Starts out as a question about gearing, progresses from there to the full gamut...

FYI:

Eng-Tips forum: Transmission, Driveline, Hybrid Drive engineering - Gearing for gas milage

The thread links to EM (to the Dodge pickup aero shell study), which is how I noticed it.

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Old 11-07-2009, 01:40 PM   #2 (permalink)
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discuss

They covered the bases pretty good! Some of the recommendations would require a re-design of the truck,but much could be mods as we know could be DIY.
Thanks Darin!
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Old 11-07-2009, 04:37 PM   #3 (permalink)
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Diesels are a great untapped resource for mileage gains. I just got 19.3 mpg on a 500 mile trip in my 89 Dodge, and it is running injectors that are 300 % larger than stock. Horsepower is 400 on fuel and 600 with nitrous. I am trying to get an overdrive in the works, as currently I am about 30% past the rpm for peak mileage. Keep in mind this is in a 5000 lb truck that is shaped like a brick.
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Old 11-07-2009, 07:06 PM   #4 (permalink)
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I've visited that forum over the years. There are some good pro engineers on there, and somewhat less of the usual nonsense.
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Old 11-09-2009, 01:56 AM   #5 (permalink)
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My oldest sons Hemi Ram Crew Cab 4x4 got a best of 21 mpg with him driving one way on a 240 mile trip....he was SHOCKED when I drove it back and got 23! It's the newer 09 that shuts down 1/2 the motor when cruising....he accelerates a bit harder and tends to stay at speed lomger when a stop is ahead.
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Old 11-09-2009, 02:21 AM   #6 (permalink)
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Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

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I have one helluva time busting 20 and that is with pretty careful driving.

Wish I could shut half my cylinders down at cruise... sometimes.
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Old 11-10-2009, 12:24 AM   #7 (permalink)
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Quote:
Originally Posted by Frank Lee View Post
I've visited that forum over the years. There are some good pro engineers on there, and somewhat less of the usual nonsense.
Me too. I almost signed up once or twice to ask a serious question, but chickened out. I'm not worthy!
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Old 11-10-2009, 12:30 AM   #8 (permalink)
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Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,533
Thanked 3,377 Times in 2,126 Posts
No! You should go for it. You aren't going to pollute the place with nonsense, I know that.

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