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bromhead 08-10-2011 11:37 AM

how does qdII work?
How does ELSD work on QDII?

On manual systems (like my 97 Land Rover), you lock your center diff and if you don't have a slip or a locker, while you have the same power going front and back, you can still spin a tire left to right. Conventional ockers, for instance, mitigate or completely fix this issue.

How does it work on the jeep with ELSD. And how does traction control play into this. (i have looked at the jeep web site, but i am still curious).

With traction control and brake modulation, doesn't this limit the left to right tire spinning within an axle anyway? And how does ELSD improve or effect that?

Thanks for the help.

Escape 08-10-2011 05:38 PM

Re: how does qdII work?
Here you go.

bromhead 08-11-2011 12:49 PM

Re: how does qdII work?
Thank you

Andrew Klossner 08-11-2011 06:21 PM

Re: how does qdII work?

Originally Posted by Escape (Post 463495)

That page is for the old WKs. "Quadra-Drive II features an electronic shift mechanism with a unique engagement lever. The lever is conveniently located on the shift console. Pulling the lever up engages 4-Low."

Is the WK2 QD2 drive train exactly the same?

RageOfFury 08-16-2011 08:20 PM

Re: how does qdII work?
Some good info here:

jgc4ever 08-16-2011 10:11 PM

Re: how does qdII work?
Not much, but it's from Jeep engineer Phil Jansen:

And this also:

bromhead 08-16-2011 10:20 PM

Re: how does qdII work?
great links. thanks to both of you.
So, main difference in quad drive and quad track II is in the rear, break modulation for the qtII, ELSD for qdII.
Got it. I think :)


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