There are more possibilities than Banks as well. I am running the the Six
Gun and Speed Loader with the High Ram intake, Turbo waste gate actuator and
Banks 4" exhaust system including the 4" straight through stainless glass
pack muffler. There are simillar offerings from others that do similar
deeds. Basically you advance the timing of the injection events, modify the
common rail fuel pressure and modify the air flow into and exhaust gasses
from the engine. These changes can be made without causing loss of mileage
because diesel engines do not use air controls and therefore do not run
under vacuum conditions. If fact, the timing changes can actually increase
miles per gallon. Of course when your foot is in it, you can expect to burn
the fuel. However the message is that this extra reserve power comes at no
sacrifice in efficiency. After driving a high perforfance diesel, I will
never drive another gas powered vehicle. The drivability with such low
engine speed torque and the smoothness offered from idle to top speed are
characteristics simply not available with gasoline engines which run under
vacuum conditions unless WOT. I can talk about this forever, but before you
commit yourself, drive a Cummins powered truck and see for yourself. Then
see if you can find an unhappy owner of one!
If you don't want a 3/4 or 1 ton truck just wait another year. The 2009 Ram
1500 gets a 5.6L Cummins V8 diesel. I bet the new 4.2L V6 Cummins will be
available for the Dakota/Durango within a few years too.
Suddenly, without warning, Joe exclaimed (1/2/2008 12:16 PM):
My 2001 4.7l 4x4 SLT Dak currently gets about 13.5 city, 17-18 highway.
But when it was new, it got closer to 19mpg average, both city and
I love my Dak though, wouldn't trade it for twice the mileage.
Did dodge ever put a diesel in any of the dakotas? I thought I saw a
Diesel jeep cherokee running around town here... i never did see one on
a lot (that i remember) it seems to me it was a 3.0L diesel, with quite
Surprising North America hasn't made better use of diesel
Well, not exactly. An Italian Diesel was introduced in the 3.0L size range
in the Jeep and was discontinued for emissions reasons. I actually find that
amazing because Mercedes has several engines in that size range that are
quite powerful and are emissions compliant, like the engine in the Sprinter.
It is however important to note that ALL automotive diesel engines now
produced in that range are of the new high speed variety and those engines
are lightweight and have a broader speed range, but suffer poorer brake mean
specific fuel consumption BMSFC. They have a BSMFC in the range of 4.1 lbs
per hp hour, as opposed to the conventional industrial diesel of 3.7/3.8 lbs
per hp hour. These more modern diesels trade off efficiency for reduced
noise, particulate and NO emissions. Although I regret the efficiency and
mileage loss this change represents, the decrease in weight and noise makes
their use quite appealing. They do not have the same brute low speed torque
the industrial engine has either. This has been sacrificed for the higher
engine speed range. However, a lot of these detractions are smothered by the
fuel energy advantage, as diesel has 25% greater thermal energy by volume
over gasoline, which means a 25% increase in mileage and range even if the
BMSFC is the same as a gasoline motor. This is pretty hard to beat.
Especially when you can drive the thing on waste cooking oil.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.