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Alberto
Unregistered
1/31/2001
11:47:36
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 Subject: Axle ratio and 4WD
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Message:
Hi all,
I'm thinking on buying a 2001 Dakota Quad Cab and I have some questions.
What's the difference between picking a 3.55 or 3.92 axle ratio. I've asked the dealer and they couldn't answer the question. Since it's the same money I'm not sure what should I get. The engine it's gonna be the 4.7L V8, automatic transmition and I want the 4x4 with limited slip differential.
On the 4WD topic, I'm leaning towars part time 4WD because I don't see the need of having 4WD for highway driving in summer. What are exactly de differences between part time and full time. I am going to be missing something if I go part time?
Thanks in advance,
Alberto//
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Bernd
GenIII
1/31/2001
14:30:41
| RE: Axle ratio and 4WD
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Message:
For better performance and offroad capabilities (with also the option of installing larger tires at a later date), stick with the 3.92:1 Limited Slip.
Bernd D. Ratsch
1997 Dodge Dakota SLT
Supercharged w/Nitrous
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95DakotaV8
GenII
1/31/2001
18:16:27
| RE: Axle ratio and 4WD
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Message:
Full time 4wheel drive will wear the front tires out faster, stick with part time. My 95 Dakota doesn't use any vacuum junk to actuate the front wheels, it is a direct link into the transfer case so it is very reliable.
KJR
1995 Dakota Club Cab SLT 4x4, 5.2L, 5spd, 3.90 rear end
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Bob
DakotaEnthusiast
1/31/2001
19:09:02
| RE: Axle ratio and 4WD
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Message:
95Dak8--good answer...If you are going to do allot of off road stuff,race it,or add bigger tires,pull a heavy trailer...go with the 392 L-S.If you want better gas mileage,still race it a little,go off road a little...go with the 355 L-S.
Bob
00 Dak.CC SLT Plus 4.7L 235hp 355 L-Slip Auto. #9Elliott
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Alberto
Unregistered
2/01/2001
10:40:47
| RE: Axle ratio and 4WD
IP: Logged
Message:
Thanks to all for the input. Now, regarding the 4WD I still have some doubts. Is it posible to switch the full-time 4WD into 2WD? From what I can tell from the pictures the knob has 4 positions: N AWD 4HI 4LO. What's "N" for? also, can someone elavorate on the L-Slip.
I apologize for the basic questions but I'm still confused with this whole thing. I've been reading the different 4WD systems from: http://cars.com/carsapp/national/?srv=parser&act=display&tf=/advice/shopping/4wd_demystified/index.tmpl
but I'm not sure what the Dakota full-time 4WD adheres to. It seems to line better with the "permanent four-wheel drive" system described there.
Thanks again,
Alberto//
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95DakotaV8
GenII
2/01/2001
19:40:18
| RE: Axle ratio and 4WD
IP: Logged
Message:
N is for neutral (towing the truck). AWD position probably applies a certain percentage, say 85%, of the power to the rear wheels with the remaining going to the front. When the vehicles sophisticated computer detects wheel slippage, a viscous clutch pack probably transfers more power to the front wheels. 4 HI would be like the rest of us have, same with 4 Lo. The benefit of a system like this is it keeps a novice or inexperienced driver from losing control on a wet road, which can happen in a powerful V8 like this. If you took it off-roading without shifting to 4 HI, it would probably burn out.
Like I said, full time AWD has drawbacks that you will notice more than the benefits if you are an experienced or attentive driver.
I will have to pass on the limited slip, don't know exactly how they work.
Go test drive the Dodge and see the difference for yourself. For us faithless Americans, seeing is believing.
KJR
1995 Dakota Club Cab SLT 4x4, 5.2L, 5spd, 3.90 rear end
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Walt_Felix
GenI
2/02/2001
16:37:26
| RE: Axle ratio and 4WD
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Message:
Before becoming a computer geek, I drove a repo wrecker for 13 years and never towed a 4x4 with the transfer case in “Neutral”. When you shift the transfer case into “Neutral” you are only disengaging the gears between the transfer case and the transmission. The front and rear axles are still geared together though the transfer case. Even with the transfer case in “Neutral”, If you pick the truck off the ground and spun the rear tires, the fronts will spin too. The only time the front and rear axles are separate of each other is with a part time system in 2Hi.
To safely tow a part time 4WD, you put the transfer case in 2Hi and tow it from the rear. You may have previously heard “Backup 15-20ft if your front hubs are sticking”, the reverse rotation of the front wheels and angled cut of the splines on the hubs will naturally release the front hubs if they are sticking. You can tow it from the front with the transfer case in 2Hi and the transmission in Neutral, but you are putting the transmission at risk if there is a problem. As long as you go a short distance and keep the speed down it won't be a problem. Further than that I preferred to haul it from behind.
A Full time 4WD has to be hauled on dollies or a flat bed. I have towed an old chevy with full time transfer case by slinging the front and letting the front wheels spin freely in the air. As long as you go a short distance (few miles max) and keep the speed down (below 40mph) it won't hurt anything.
Walt Felix
88½ Dakota Sport 4x4
http://WWW.Walt-n-Ingrid.COM
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Alberto
Unregistered
2/06/2001
19:35:59
| RE: Axle ratio and 4WD
IP: Logged
Message:
I contacted DaimlerChrysler regarding the difference between AWD and 4HI in the Dakota and here's their explanation:
"Basically, the AWD allows you to drive the vehicle on dry surfaces where as the 4HI requires slippery surfaces or else transfer case damage will occur. The more detailed answer is; in AWD mode, the front and rear driveshafts are coupled by an interaxle differential which allows them to rotate at different speeds.
Torque distribution is a constant 42% front and 52% rear. In 4 HI, the front and rear driveshafts are mechanically locked via the transfer case, forcing them to be driven at the same speed. So simply put, the difference between the AWD and 4HI is how it links the front to rear driveshafts."
Alberto/
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B. Cathey
Dodge Dakota
7/17/2001
15:13:51
| RE: Axle ratio and 4WD
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Message:
I have a 99 Durango SLT Plus with a 5.9, AWD (NP242 Transfer Case I presume because it is not the electronic NP244), 3.92:1 axle, limited slip diff, heavy duty towing package, and 31" tires. I purchased it equipped this way to handle the max. tow capacity of 7300 lbs.
I get this venting noise every once in a while (like at least every month). I can not determine where it is coming from and can not determine what conditions cause it. This vehicle is equipped with 4-wheel ABS and rear A/C. I do not think it is the A/C venting but I could be wrong.
With the optional 3:92 rear end is it possible that the front axle has the standard ratios causing some sort of pressure build up in the transfer case? The sound is like a groan and lasts about 2 to three seconds. Any ideas?
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MACE
Dodge Dakota
7/17/2001
17:00:03
| RE: Axle ratio and 4WD
IP: Logged
Message:
Re:AWD, I could never get a straight answer from anyone re: how the new NV244HD works...however, most said there is NO full time torque split, that in AWD (with LSD), only the rear axle get torque till the computer senses slippage, then ALL the torque is applied to the wheel(s) with the most slippage, not to the wheel(s)with the most traction.
The NV244HD (electronic) does HAVE the capability to send torque to all four wheels, but there is NOT a full time split of torque.
I did learn that our LSD system drives both rear wheels full time though and 4W-ABS is NOT linked with AWD to stop well slippage...all this info coming from various posts on the NET with New Venture Gear blowing me off and not answering my voicemail to them on how the NV244HD really works.
Now for the real world experience...almost 2000 miles on my 4.7/Auto/Awd/3.92/LSD/T&H/4W-ABS/Sport+, and not once have I been able to chirp the tires...but at stop light launches in the pouring rain, I hook up all the time with 100% traction, getting thrown back in the seat...
Begs the question, anyone take the AWD DAKs to the track, besides the extra weight (100 lbs or so), AWD must help with 1/4 mile times?
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Swampdak
Gen III
7/17/2001
19:02:33
| RE: Axle ratio and 4WD
IP: Logged
Message:
Mace- There is only one way to answer that question , get that puppy out to your local strip and see what she will do ,then we can compare times.I get wheelspin but it almost seems to help by letting the little 4.7 rev up a bit.
Y2K CC 4.7 AUTO 4X4 3.55 TRAC-LOK SLT K&N 16.35/82.41
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tom s
Dodge Dakota
JOIN HERE
9/28/2003
12:04:50
| diagram of 92 dakota rear axle
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Message:
just wondering if anyone would know where to find a break down diagram of rear axle for my 92 dakota 4wd?
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Sean
Dodge Dakota
JOIN HERE
1/10/2004
16:02:51
| RE: Axle ratio and 4WD
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Message:
I also am looking for a skimatic of the rear axle. If you've found it, let me know. Closest we could come to it was Chilton's differential housing. What's a c-4167 tool?
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scott tremblett
Dodge Dakota
JOIN HERE
8/03/2007
10:01:57
| RE: Axle ratio and 4WD
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Message:
i have a '97 dakota slt 4x4 v6 and cant seem to find the gear ratio for the rear end gears are busted and need to be replaced. the only thing i can find marked in the truck is... chrysler 8.25 limited slip differential, could this be what i am looking for?
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daddio
Dodge Dakota
JOIN HERE
8/03/2007
11:20:57
| RE: Axle ratio and 4WD
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Message:
you should have a tag on the center housing of the rear diff. also on inside glove box lid may have a sticker with that info.
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ROSCOE
Dodge Dakota
JOIN HERE
8/18/2008
14:26:07
| RE: Axle ratio and 4WD
IP: Logged
Message:
How can I tell wat axle ratio I have on 2003 Dakota with 4WD 5.9 eng, auto trans, and tow package?
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daddio
Dodge Dakota
JOIN HERE
8/18/2008
16:11:35
| RE: Axle ratio and 4WD
IP: Logged
Message:
Roscoe, did you even read any of this post? if you would have read my last post which is right above yours, you woudln't have had to ask the question.
"daddio
Dodge Dakota
JOIN HERE
8/03/2007
11:20:57
RE: Axle ratio and 4WD
IP: Logged
Message:
you should have a tag on the center housing of the rear diff. also on inside glove box lid may have a sticker with that info."
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