double cardan drive shaft
 

vs. constant velocity driveshaft
I did some google research and checked into some other threads on other forums
and I still dont understand why the DC style is considered better?

I plan on building a 90% of the time DD. I want just want an adventure xj (as soon as I can find a cheap virgin) and want it to be sitting on 5.5 inches and 33's. probably lock the front way down the line. just trying to get my research out of the way now
I'm really interested in IRO but it's pretty pricey for the complete and I want to cut a corner by getting the hack n tap and referbished d shaft. double cardan is 250.00 extra
thanks

I don't know that it's considered better I just don't know of any CV drive shafts that hold up. Early XJs had them up front and ZJs often came with them and neither like to run with a lift. The DC is also servicable whereas the CV is not. You'll hear lots of people say they are running a rear CV shaft but 90% of the time they are mistaken and actually have a DC, most think it's a CV.

so DC is better but is it worth 250. can I find one cheaper? and do I still need a SYE to go with it or does it take its place. not very techy over here

Hope this helps. Look for a front ds out of a zj. They about 3" longer than front of an xj.

SYE is only about 150. I'm just gonna get one

Go read this.

DRIVESHAFT 101

The DC and SYE work together, don't use one without the other.

Remember SYE requires you remove the T case and take it apart.

I do too, banana cream.

I'm sorry, but this is not entirely correct.

I have installed a few SYE's on vehicles with little to no lift, and with the correct yoke substituted for the "CV" style yoke, a standard driveshaft can be installed without any issues.

You don't have to take the t case all the way out I know people who left theirs in while I stalling their sye