Full Time 4WD
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stanglover37
New member
So Im confused about this 4 wheel drive system. I am quite familiar with traditional 4 wheel drive systems and car mechanics in general so if someone could go into the specific mechanics of how this full time 4 wd works I would greatly appreciate it. I am looking into buying a v8 4th gen for a capable off road vehicle with lift and tires in mind so I need to know the details.
So what I thought:
open/limited slip solid rear
IRS open front
transfer case with in dash 4hi 4lo 2hi options
Would really like to have this cleared up. Thanks
So what I thought:
open/limited slip solid rear
IRS open front
transfer case with in dash 4hi 4lo 2hi options
Would really like to have this cleared up. Thanks
CJ3Flyr
Super Moderator
stanglover37 said:
Remember old school, full-time 4wd, NP203 transfer cases? It's like that. Instead of the NP203's traditional 'open-diff' it uses a Torsen diff. You can push diff lock and it locks the t-case (Front to Rear) and that makes it like an old school t-case in 4hi or 4lo.
The axles are open diffs. It uses a brake assist provided by the ABS to produce "limited-slip like" characterstics. The brake pinches the spinning wheel forcing the torque to go to the other wheel, presumably that wheel has some traction. There's an extra layer of traction control that lays on top of this... It cuts the engine power to aid in maintaining traction. The power robbing aspect of the system is defeated when the center diff is locked (or the VSC off button is push on an '08 or '09).
Here's some good reading that'll explain it further.
:cheers:
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Tundras have a light weight, lower center of gravity, rear end. Granted, anything can flip over, even a Ferrari, but I would think a truck in general would be more stable then an SUV of any nature. I've seen trucks fishtail in mud holes, and SUV's flip in the same mud hole before.
I'm just saying, for my own personal pref, I like the additional stability of awd with the additional punch of these V8's. Just my choice.
I'm just saying, for my own personal pref, I like the additional stability of awd with the additional punch of these V8's. Just my choice.
nc211 said:
Lighter weight, especially in the rear like in trucks, will equate to less stability as the rear wheels are the driving force. Why do you think people put weights (sand bags, usually) in the truck beds? It's for traction in snow (or any slippery surface). SUV's have a better weight distribution than trucks, generally speaking.
Also, Tundra's don't have a lower center of gravity. What makes you think this?
CJ3Flyr
Super Moderator
nc211 said:
In Florida we have lots of 2wd V8 4Runners. The electronic nannies seem to keep them under control... I've often thought what a great vehicle a 2wd V8 4Runner would be. In basic SR5 trim they have an incredibly high bang-for-the-buck factor if you're into towing a boat or small camper but want to own one vehicle instead of a car and a real truck.
:cheers:
