for my jeep project my uncle and myself are reversing the shackles. not buying a kit but we actually grinded them off and are planning to weld them back on. wondering if anyone knew what the best way to have them positioned. even if u dont know but have a useful video clip or article u read i would GREATLY appreciate that!
well my uncle has a cj. he says that the shackles always get in his way and he wishes he could reverse them. i have heard many good things about the reversal too and we are going to be doing a spring over axle which seems to work well together. whats your opinion if you dont mind? *(thank you for the photos!!)
When the vehicle strikes an object when going forward the first reaction of the tire/axle is to move back and up. However, the axle can't move backward because of the solid connection at the rear of the spring. The result is that the tire compresses more while the axle starts to move upward. Then the tire expands causing an increase in the impression of how hard the impact is.
With the reversal the tire/axle moves back and begins to move upward at the same time. This allows the suspension to absorb the contact with less impact on the frame and upwards of the frame.
If I were to do it I would,Disconnect the leaf springs. Cut the front and back mounts off. Then take the back mounts and center them at the front of the frame, and weld it. Then take the front shackle mounts and attach the springs to them and weld them to the frame.If you look close to where he welded the back shackle mount, in the picture you can see just behind it is where the previous mount was. Just my 2 cents.
Take very good measurements on the positioning of the actual axle relative to a front reference point. Then make sure when you put on the front mount that with the distance from the bushing to the center of the axle is the same. That positions the axle back where it was before.
Next the critical issue is that they both be exactly the same distance from the front. This will be somewhat difficult to determine but it is what makes the axle track true to the direction.
You may have to take it to an alignment shop to get it just right.
Make sure you measure from the center of the front spring mount to the center of the rear frame mounted shackle mount. That is the measurement you will use to locate the rear shackle mount when you weld it back on.
If you have already removed the front mounts you can get those measurements from another one or from one of the frame diagrams on the internet. But remember, you need to locate the axle relative to the front of the vehicle, not the center of the spring eye.