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Old 05-07-2018, 09:45 PM   #8
palallin
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Join Date: Jul 2002
Location: St. James, MO
Posts: 1,239
Re: My AWD Build Thread

Quote:
Originally Posted by jkohnz View Post
4X4 has 100% power to the front wheels when the vehicle is put into 4X4, and it's not full time. the transfer cases are not built for full time to the front and will eventually grenade if you drive full time 4X4. The front diffs only lock when put into 4X4.
Uh, no. Most (but not all) xfer cases transmit power equally front and rear as long as all tires have traction (or both axles do, if limited slip or lockers). 100% power to the front axle would mean no power to the rear.

Further, there are MANY xfer cases designed for full-time 4WD, the old school NP 203 being one example. Internal differential action allows them to go on any surface all the time. And the part-time cases are only stressed so long as all tires have traction (or both axles, if limited slip or locker) on solid pavement or other hard surface. As long as there is some slip, you can drive them full-time. In fact, so long as you don't turn, you can drive them full-time on hard pavement. It's the lack of differential action that causes them to bind and eventually over stress.
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