1st Gen Durango 1998 - 2003 Durango's

better gas milage

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Old Jul 21, 2007 | 06:49 AM
  #11  
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Default RE: better gas milage

YEAH IVE GOT A 25 GALLON TANK AND CAN GO BETWEEN 425 AND 450 MILES A TANK. I'D LIKE TO SEE SOME PICTURES OF THIS RIGGED UP INTAKE IF YOUVE GOT ANY
 
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Old Jul 21, 2007 | 07:22 PM
  #12  
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Default RE: better gas milage

nothing really to take a picture of

1. just go to your air box were your filter is
2. pull the plastic tube coming out of the box (it is turned to fender) just yank slowly moving side to side it will come out **done** no restriction now
3. go to the passenger front with hood open and there should be a cover between the headlight and the side of the condenser and rad **remove** 2 plastic clips
4. you should be able to look right through the engine compartment the the air box
5. now when driving the air gets blow through your grill and right into the bottom of the air box


this is a old trick from my mustang days it gave you 3 hp by removing this restriction of air

and little known on most dodge cars and minivans they use to have the black box mounted to the fender were your air tube was connected to, if you remove the cap on the end that only had 3 tiny slots to let the air in you got better mileage and some more pep

I will take a picture tommorow just so you can see
 
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Old Jul 21, 2007 | 09:04 PM
  #13  
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Default RE: better gas milage

To those that claims 21-22 mpg, what axle ratios you have? I would have to say you guys are running 3:55 gears or lower to attain such a high MPG's. No way any of us with 3:92 gearring will ever see anything like that consistently! If so, I like to see the specs!

I'd bet if you were doing 70 mpg, your rpms may be hoverring around 1500 rpms!
 
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Old Jul 22, 2007 | 05:12 AM
  #14  
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im avg'ing 11.7 with mine woohoo!
 
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Old Jul 22, 2007 | 05:34 AM
  #15  
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ORIGINAL: blkdurango4.7

what can i do to my 2000 4.7l durango to get better gas milage? i have a cold air intake,throttle bodey spacer,and exhaust. im getting 13.8mpg avg.
Wear a lighter shoe on your right foot.
 
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Old Jul 25, 2007 | 10:10 PM
  #16  
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thanks for the help everyone! i get 17-18mpg now! but i still have my TBS
 
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Old Jul 26, 2007 | 05:46 AM
  #17  
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{note in this press release that Chrysler engineering did not change
the air intake system to improve MPG because they know from tests
that it has no effect at part-throttle engine operation}
-------------------
It's Called MAGIC, But It's Pure Engineering from Chrysler Group

* Small Changes to Engine, Vehicle Add Up to 25 Percent Better Fuel Efficiency

AUBURN HILLS, Mich., June 13, 2002 -------- Chrysler Group
researchers are using a series of small steps in engineering to produce a
giant leap in fuel efficiency that could benefit consumers in the not-too-
distant future.
With a series of engineering changes to Chrysler's standard gasoline-
powered, 4.7-liter V-8 engine, researchers have produced an engine with 14
percent better fuel efficiency. The cost of those changes: less than $200 per
engine. The project has been nicknamed the MAGIC engine, which stands for
Multiple Approaches to Great Internal Combustion. The improvement in fuel
efficiency was achieved with no sacrifice in emissions, power, cost, weight,
engine life or other engine characteristics such as noise, vibration or
harshness.
"We call it the MAGIC engine, but it's really pure engineering," said
Thomas Moore, DaimlerChrysler Vice President and head of the Liberty &
Technical Affairs advanced technology research group in Rochester Hills,
Michigan. "Our goal was to demonstrate that all these little changes actually
work in the real world and add up to major improvements in efficiency. Today
we can say that it all works."
Eight different design and engineering changes were made to the standard
engine. "Most of these changes are not new, and individually, they produce
miniscule gains in fuel efficiency," Moore said. "The idea of the MAGIC
engine is to package them all together so the overall gain is significant."
As a next step, Chrysler engineers packaged the MAGIC engine into a Dodge
Durango SUV with several additional design changes to enhance fuel efficiency.
That vehicle, project Apollo, achieves an overall improvement in fuel
efficiency of 25 percent.

Total additional costs for project Apollo are only about $700 per vehicle.
Areas of improvement are:
* Increased compression ratio (4 percent) -- resulting in greater
efficiency and lower emissions -- through:
+ Intake port air-gap thermal barrier.
Chrysler Group has applied for a patent for this innovative feature.
+ On-demand piston oil-squirters
+ Precision cooling system

* Charge motion control (5 percent). Use of swirl control valves to
enhance flame propagation during warm-up and partial load
This also enables increased EGR (Exhaust Gas Recirculation)

* Friction loss reduction (4 percent). Design changes to lower friction
at no extra cost:
+ Crankshaft offset
+ Reduced oil-ring tension
+ Shortened coolant jacket

* Parasitic loss reduction (1 percent). New design oil pump with reduced
internal leakage and reduced friction

Chrysler Group engineers used the same incremental approach to fuel
efficiency improvements in the Dodge Durango SUV fuel efficiency demonstration
vehicle.

The Apollo project includes the following enhancements:

* A 12V alternator/restarter to allow transparent shutdown and restarting
of a warm engine in stop/start traffic conditions (4 percent)
* Improved cooling technologies, including electronic thermostat,
electric water pump, transmission temperature management and multi-mode
temperature strategy (5 percent)
* Improved undercarriage aerodynamics (belly pans and air dams) and
grille shutters resulting in reduced drag (1.2 percent)
* Electro-hydraulic power steering (1 percent)

"Engineers have been improving the internal combustion engine for 130
years, so big improvements are hard to come by," Moore said. "We made the big
improvement one small step at a time."

 
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Old Jul 27, 2007 | 10:40 PM
  #18  
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Default RE: better gas milage

Mean Green has an airbox mod that got him 2 mpg IIRC, you might want to pm him and ask how he did it. another thing you can do is wrap your fuel rail with heat insulating tape... keeps the rail from gettng heat soaked which will allow your fuel to remain at whatever temp it comes out of the tank at... cant tell you how much it'll help mileage... when I did mine I added a fuel cooler as well and combined it gave me a 6% improvement.
 
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Old Jul 30, 2007 | 06:34 PM
  #19  
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hey steve05ram360 , how do you put a picture in your signature?
 
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Old Jul 31, 2007 | 03:37 AM
  #20  
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Default RE: better gas milage

Load a pic in photobucket or some other picture hosting site then copy the img tag and paste it in your sig. The usual rule on mostforumsis to keep them about the size of my current sig.
 
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