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Comments
(natdmann) The 4speed automatic xmission on the 4.7L is a COMPLETELY different beast from any xmission you know and love. It is fully a computerized shifting machine. Virtually all aspects of its operation are programmable.
You are totally correct about firm shifts being LESS destructive to the xmission. As you allude to... the ALLISON AUTOMATIC (by GM) is the best automatic xmission on earth. Busses and tractor-trailers have logges MILLIONS of miles on these babys and they are bulletproof!
Is that because yours is a quad and mine is a club?? thanks will
Also, FYI-- I have about 3,500 miles now and have found, as the tag in the glove box explains, the gas mileage has been steadily improving. I also returned from an 1800 mile road trip where I experienced between 18.2 mpg & 21.5 mpg. Overall it was 18.7mpg. Not bad.
Thanks again for all of the info.
In an exhaust pipe, the exhaust along the pipe walls "feels" the drag more than the gases traveling down the middle. The gases in the center can flow faster and faster the further away the center is from the drag along the walls.
An extreme example of this would be to gather up a bundle of fast food restaurant drinking straws and measure the area of each opening. Add enough straws so that the total of all of the openings equal the same area as a 3" exhaust pipe. If you would attach this to your tail pipe. I bet you would be able to measure (using some device) more back pressure, indicating that there is more drag or resistance to the flow of gases even though the numerically the area is the same.
With any exhaust system, you'd also have to take into consideration how long the pipes are, how many bends, and the angle of the bends. All of these add more resistance to the flow. The straightest, biggest, shortest pipe is the best.
Allen-
Just give her some more time and your MPG will increase. The same thing for the hard shifts. The truck is learning how you drive and it will start adjusting the shift points and firmness of the shifts, for me I want HARDER shifts, especially under WOT. I think the tranny shifts way too smoothly under WOT, Id like it to just shift "BAM!!!" right now when i get on it. In short give her a little time, at 3000 or so miles make the switch to synthetic oil and prepare to enjoy that truck for a good long time. I know I will.
A larger column (as within a SINGLE pipe vs. two smaller pipes) will improve the 'scavenging' effect that the exhaust system has on the combustion chambers. (SCAVENGING = suction/vacuum or negative pressure that PULLS the exhaust from the engine)
There are VOLUMES written on the dynamics of internal combustion engines and the effects of the exhaust design.
Very similarly ... the length, diameter and design of the INTAKE is no less important than the very same features of the exhaust system.
How many people know that the intake manifold of the 4.7L is PLASTIC with 8 very long runners (one for each cylinder) The plastic has very smooth sides AND insulates the intake air from the underhood heat. The cooler intake air improves efficiency (produces more power)The long runners improve low end torque because of RAM effect. (SURPRISE... this effect works in reverse)
I will let the readers figure out why 8 separate runners are better that ONE large one for the INTAKE system...
the airflow for better mixing and combustion. I love looking at the intakes and exhausts on those 12 cylinder engines you see on TV. A lot of math there.
Why don't we ask njt15 to post more info on the manufacturer's claim that their 3" is better than other mfr's two 2.5" pipes and work together to resolve the issue?
njt15, where are you? Give us more.
As for the 16" wheels, mine are manufactured by a company called MHT. The wheel is the "Intruder" 16x8 6 on 4.5 pattern. The offset is a little bit off, which is why the fender trimming. But they fit just perfectly inside the fender wells. Almost flush with the fender flares, but enough inside to keep road grime off the trucks paint. BTW the ram wheels will NOT fit, different bolt pattern. Ram's are 5 lug - dakota 6 lug. Gas mileage that I posted earlier was with these wheels and tires, and the handeling has seen no changes, rides just the same as before, only 35 miles on the the others but it seems to be very close. As for the speedometer/odometer issue the dealer can change this ratio simply by plugging in the computer and changing the tire size to match what you install. Hope this info is helpful
Are you interested in selling your stock wheels and tires? If so how much?
Bookitty
TIRE PRESSURE: A while back it was noted that the factory shipped the trucks with the tire pressure recomended for full load and that reducing the pressure would improve the ride. I reduced mine down to 36 lbs and can say that the ride is better. Less bounceing, more refined. What are you folks running? Any actual miliage or wear observations related to tire pressure? Anyone running at 30 lbs? (which, I think, is the low/no load pressure)
Bookitty
Stockland "Motorsport" cab high shell installed
here in Las Vegas. I paid $953.45 including tax.
It has no side windows,but does have a front
slider.I was concerned about the color match,but
it is just fine. I have Light Driftwood Satin Glow! It took 19 days to get it from the day I
ordered it.I`am very happy with the shell and how
it looks on the truck.I installed Pro-Comp bed
rails on the truck before installing the shell.
I ordered them from 4 Wheel Parts Wholesalers.
Before I ordered them I emailed them and was very
specific about my truck being a Dakota QC with a
5'-3" bed. They said they had them to fit ! Wrong !They sent me a set that was a foot too long
I was very p...ed.I had to cut them to fit and buy
molding tape to secure them in the area that I cut
I sent them a nasty email and told them I wouldnt
order from them again.
Other than that I`m a happy camper [shell]owner.
Johnboy 9
otherwise it remains the best truck i have ever driven for road comfort,acceleration,and general handling.
any cooments ?
slr
Thanks
These are NOT locking differentials by any measure. There are two clutch packs witin the differential case that have a specific "preload" which forces torque to both wheels up until these clutches slip. Additionally, there is a measure of centrifical force that assists these clutches to slip less.
What does this all mean? There is a TENDANCY to split the torque evenly between the wheels with LSD. It does not "lock" the wheels together under any conditions.
Is it torque related?... Sure, too much torque differential between the wheels will spin one wheel. Torque does not make the clutches grip any better.
Speed related?... not that I know of.
=================
Now for somthing REALLY different... The JEEP QUADRA-TRAC uses the GERODISK system. This is truly a torque/speed sensitive system. Check out the graphs as compared to LSD with static clutches.
http://www.ashacorp.com/gerodisc.html
Now, you made contradictory statements. You had said that centrifical force helps the clutches to slip less yet you also said it wasn't speed related, at least what you knew of. In the above example, would it help in getting over the wedge if the tire on the ice were to spin faster? Or is it a case of once your stuck, your stuck?
Does anyone have any info on the 2001s, yet? It looks like it will be December or January before I can get one. I have heard of possible engine changes?
Would like any help you can offer
Scott
Bookitty
Also, when I asked the salesman about the 2001 models, he informed me that he already has several 2001 Ram 1500's and 2500's. His explanation was that D/C ships some truck lines real early so they can meet their next calendar year CAFE gas mileage requirement. True or not, I don't know but some 2001's are already out there. And no I didn't walk around to the back lot to confirm.
If you desire a true LOCKER differential. There are "detroit locker" units that can be purchased in the aftermarket and installed by any COMPETENT mechanic. These units actually LOCK the two wheels together under specific conditins.
I also beleive that electrically-operated "locker" units are available which you can turn on as needed. (Very little use under 'normal' conditions because a locked axle has a tendancy to want to always go STRAIGHT AHEAD and will quickly destroy itslef/tires if you turn sharply)
themacguy: Not talked to ernie in a while but will call him in the morning... Didn't want him to get sick of all the calls, but I guess that is why he is there..
Scott
So a model year could be January 2nd 2000 until December 31st 2001 or it could be December 31st 1999 until January 2nd 2000.
Locking diffs - nah, you don't want them. Leave them to the rock hoppers, stick to LSD and the ability to steer. Only one occasion where I saw a locker justifying itself and that was pulling a boat up a very wet, very steep ramp. LSD would have done it, but locker made it easier.
The salespeople at the dealerships I've vistited act like I'm from Mars when I ask how their allocation will affect order time.
Thanks.
As a general rule on allocations the more vehicles that a dealer sells the bigger the allocation - so by that logic the largest dealer is probably going to have the best allocations, though not neessarily the best customer service.
Bookitty
Does anyone know why these things would be going from L/A or El Paso TOWARDS Dallas?! I mean I've heard of rerouting and all that crap, butttttt... this delivery business is getting ridiculous - and I'm sure I saw bookitty's at least a dozen times!
:-O
Bookitty
I have a question, as I read some posts about a whistling noise (fuel pump?)
Q#1) I have the 4x4 Quad Cab 5 spd 4.7L. When I step on the gas I do hear a sort of "whistle". Should I be concerned? I called the dealer and they said that is normal during the break-in period. Is it? I know zip-zero-nada about engines.
Also, the molding on my back driver side door on the bottom was installed wrong. It was put on too far toward the truck (when door is opened), and it makes a squeaking noise every time I open it. Dealer will look at tomorrow when I drop it off to have the bug guard and mud flaps put on.
By the way, I called around for the Leer XQ cap. It will take 2 weeks and $1200 bucks. Looking at others.
Q#2) Last night I drove to the Foxwoods Casino in CT. Pulling into the garage there was a White Quad with a cap on it. It looked like a Leer, had a small sleak roof rack on the top, and made the truck look almost exactly like a suburban, only better of course. I would pay for that right now. There was no name on the cap. Anyone have ideas out there?
thanks guys.
http://www.autointell.com/chrysler7.htm
Getting weird, after all of the anticipation. Its like being days away from getting married to your "mail-order" bride. Fingers are crossed.
Bookitty
Friend has a Honda Accord that was made in Marysville, Ohio so whats the difference?
photos of some of the forum writers Quads in our forum....I was told that there were ways to post them so I though I would give it a try.
Here is my page address for anyone who is interested in viewing them...or seeing if I am at all computer literate.
www.ocis.net/~rbeve/dakotapage1.htm
Caution...may take a bit to load (photos)
If you view them...please drop me a line and let me know if it even worked.
Thanks.
R.
Bookitty
I really must get some photos of truck and dogs taken and scanned, though web hosting may be more than a little beyond my capabilities.
I concur though - cute dog (well for a non malamute anyway) :-)
Note:Parts content does not include final Assembly,Distribution, or other non-parts costs.
For my truck: Final Assembly Point:
Warren, Michigan, U.S.A.
Country of Origin: Engine: United States
Transmission: United States
I am proud to be an American. Just look at the Great stuff we produce..Dodge Dakota Quad Cab 4X4s.
For some reason I feel very patriotic today!! HE,HE
Allen-
PS. Are you a dealer? How did you get all those pictures?
Allen-