New hack & tap ?'s

Ok, just got my RE h&t and a new HighAngleDriveline DS. When I ordered the package I was told that I need to install 4.5* shims in order to "point" the diff yoke at the tcase output shaft. Anyone heard of this? This is the first time I heard of it and I did a search and noone else has mentioned that. In DPG Offroad's write up, it is not mentioned, either. :dunno:

That sounds about right,it depends on your lift!You want the pinion point about 1-2* less the the output shaft on the transfer case!

if you have a CV shaft (3 u-joints) then yes, you need to point it at the output or 1-2 degrees down. if you still have a 2 joint shaft, then you want the pinion to be parrallel (or 1-2 degrees down) to the output.

Running full AAL giving me about 3.5", 2" in front but going with 3" coils in next 3 weeks. It's a "00 with the 231. The HAD DS from Jess is a 3 joint shaft. Should have put all this in the first time. :doh:

Check out Tom Woods' writeup in "Driveline Geometry 101" - http://www.4xshaft.com/driveline101.html

Yucca-Man said:

Check out Tom Woods' writeup in "Driveline Geometry 101" - http://www.4xshaft.com/driveline101.html

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Interesting that he does not make a distinction between CV and DC driveshafts, he seems to use the terms interchangably, odd for a driveline specialist. I would not use a true CV (constant velocity) joint where I could use a DC (double cardan) joint on a 4x4, as generally CV's do not have the same strength.

Another good link on the topic

http://www.pirate4x4.com/tech/billavista/PR-shaft/index3.html

Beej said:

Interesting that he does not make a distinction between CV and DC driveshafts, he seems to use the terms interchangably, odd for a driveline specialist. I would not use a true CV (constant velocity) joint where I could use a DC (double cardan) joint on a 4x4, as generally CV's do not have the same strength.

Click to expand...

From BillaVista's pirate4x4 writeup:

The very common double-cardan-style universal joint shaft is properly called a "near constant velocity, double-cardan-style universal joint shaft." (incidentally, this "velocity" we keep referring to is the angular velocity of the joint in the shaft). Now, what has happened is that because "near constant velocity, double-cardan-style universal joint shaft" is such a huge mouthful, it has become common practice to drop the "near" , "double-cardan-style", and "universal joint" and what we are left with is common convention leading to a double-cardan-style universal joint shaft simply being referred to as a CV shaft.