Jeff and I are using these ...

Rock Krawler Rear Coil Spring Correction Wedges

Easy install, but not certain how well they will work with the different pinion angle required for your new driveshaft. You might check with Jeff.

 

What I'm trying to figure out is they have what appears to be a conventional u-joint at one end (the T-case, BTW), and a CV joint at the other (the differential). Since a conventional u-joint causes the driveshaft to vary in velocity as it makes one revolution (this is caused by the moving back and forth of the u-joint as it revolves), and a CV joint is designed specifically to NOT do that (hence the name), how is is that these two seemingly incompatible pieces of hardware can be made to play nice on one driveshaft? What am I missing?

 

Do those go under the rear coils I presume? If the pinion angle changed, wouldn't the wedge just slide out?

 

Well, on my Jeep they are held in place by the spring keeper that was provided with the TF coil lift. Basically that is a fender washer large enough to trap the bottom coil of the spring, with a bolt and nut that hold that onto the spring perch. TF provides a special tool with their kit that makes it a snap to get the nut properly placed under the existing hole in the spring perch (you're reaching over the top of the axle and under the spring perch). I kept my tool, but know folks have installed similar spring keepers using just basic handtools--maybe bent needle nose pliers. Anyway, if you get a new TF kit, you should have everything to do the work. If someone else does the install, make sure to get that tool from them.

 

Hmmm... I might have to take a look to see how it is with the RC coil setup that I have right now. I do intend to switch over to the TF coils soon enough, so if the RC setup doesn't have something similar, then I might just wait it out till I switch to the TF. The other option is the JKS Spring relocators.

 

It is literally a fender washer, nut and bolt. Maybe a lock washer, too. I expect you could cobble something together at a hardware store.

 

It was nice meeting you today Tony. Thanks for the great deal! Now I just wish those ball joints would hurry up and arrive so I can put those new items to use... well maybe not the lift, I dont feel like getting stuck just to try it lol. Interceptor, if the guy with dibs falls through let me know I'd be interested!

 

I will

 

I have been searching the web trying to figure that one out also ( no answers yet). I can't figure out how that set up works the way it does some engineer has way to much time on their hands

 

Or some engineer had one extra U Joint and said - "Ah ha, I know what I can do with this"