suspension experts needed

[k5 krawler 50]

When i installed my 1-tons over the summer i also overhauled the suspension as well. I decided to put some lifted 52's up front along with the DIY4X B52 kit. When i did this i decided to follow other peoples posts who used lifted 52;s up front and moved the shackle mount forward. Well it turns out that when i did this, it buried the spring into the frame. Here is a pic of what i'm talking about:

i knew instatly that i would have to move it back to the stock hole, which brings me to my question. I was wondering how much this is going to lift the truck when i move it back? I'm not going to mess with the front mounting hole at all, so i decided to make a quick template out of some thin cardboard representing how the shackle angle will change when moved back. I dont have a picture of this but i drew it up in the paint program.. so hopefully it will do the job..lol, anyways here is the pic, and what it illustrates is that when i move the shackle back, the spring ceter eye will drop 2.5", so will this raise the truck 2.5" or will it only lift it 1.25" considering the ratio of total shackle length to lift gained? FWIW the shackle length from eye-eye is 7.25"
horrible paint pic: Hopefully this all makes sense..

 

[79k20350]

Itll only lift the truck half the distance.

The reason why doing it the way everyone else did didnt work for you is because you dont have 52" springs....

Stock springs are 52" along the main leaf (but shorter eye to eye) lift springs are the same eye to eye, but longer along the main leaf.

So when a lift spring flattens out, it get longer then the stock one, causing the issue you have.

 

[k5 krawler 50]

cool, thats what i figured, i also measured along the main leaf, and it was about 53.5", but i didnt measure it until it was on the truck..

 

[buckmtn]

Hate to highjack this thread but I just ordered a set of 2" lift 52s and they measure "49 eye to eye is this right or did they send me the wrong thing. Rough Country brand.

 

[MTBLAZER89]

I aslo believe when you use the B-52 kit it is not necessary to move the rear shackle as the B-52 does not move the forward eye near as far forward as it does when you swap the mounts side to side. If you do 56's with the B-52 you'll have to move the rear shackle back some.

This post
http://coloradok5.com/forums/showpost.php?p=1533429&postcount=39

From this thread discusses it.
http://coloradok5.com/forums/showthread.php?t=169666&highlight=B-52's

 

[muddermilitia]

I aslo believe when you use the B-52 kit it is not necessary to move the rear shackle as the B-52 does not move the forward eye near as far forward as it does when you swap the mounts side to side. If you do 56's with the B-52 you'll have to move the rear shackle back some.

This post
http://coloradok5.com/forums/showpost.php?p=1533429&postcount=39

From this thread discusses it.
http://coloradok5.com/forums/showthread.php?t=169666&highlight=B-52's

I'm going to disagree with ya there. If you mount the springs in the forward most holes in the b-52s the axle will move more than with just flipping brackets around. My axle is 2.5"s forward with the b-52s. I also moved the shackle hanger forward. If I didn't, the shackle would probably have been straight up and down, I didn't want that. I designed this suspension, and the rear suspension for more downtravel than uptravel.

Here's some pics I have of my setup: FYI these are stock 52" springs with the overload cut down so its only about 8 inches long

And here's the shackle angle with the vehicle weight on it

 

[MTBLAZER89]

Well I think the original poster proves me partially correct. He used B-52's and moved his shackle forward and ended up with too much angle. If he put the shackle back where it was the angle would be good.

Quoted from the links I copied above.

For some reason, I thought that the B52 bracket allowed you to position the front of your springs further forward than even the "L bracket relocation" type swap that I did for my write up. When Kurt said "you don't have to move your rear shackle hanger with the B52" a little light bulb went on above my head. The B52 doesn't allow you to mount things further forward... it allows you to mount them further back, which negates the need to mess with the shackle hanger. Makes perfect sense now, but I was dazed/confused about it. lol! Pic helps clear things up. I think what may have confused me initially is that the angled part of the spring hanger points toward the rear of the vehicle. When I first saw it, it looked like a approach-angle-friendly feature that would point towards the front. lol!

I now realize just how dumb all my "hey Kurt, make this work with 56s" posts must have seemed to everyone.

j

I think judging from the two pics. The L-brackets get it just a little farther forward. With the B-52's adjustability you could leave the shackles alone and just mess with the front to tune the shackle.




L-Brackets swapped.

B-52's

 

[muddermilitia]

I think judging from the two pics. The L-brackets get it just a little farther forward. With the B-52's adjustability you could leave the shackles alone and just mess with the front to tune the shackle.

L-Brackets swapped.

B-52's

Comparing those two pics, it looks like the spring is bolted in almost the same place. Compare the spring bolt to the lower hole in the frame for the bumper. They look nearly the same to me

 

[GEORGIA GABE]

Before you move it back you might want to shorten the shackle and see how it looks. The lost droop should not be enough to worry about and it should bring the spring forward and down in the arc to help with your problem.

just a thought
gabe

 

[k5 krawler 50]

Before you move it back you might want to shorten the shackle and see how it looks. The lost droop should not be enough to worry about and it should bring the spring forward and down in the arc to help with your problem.

just a thought
gabe

hmm, i never thought of that, when the time comes i going to spend a whole weekend playing with the suspension to get it dialed in. As for my b-52's, they are mounted in the forward most position on the frame with the leafs in the third most forward hole.

 

[k5 krawler 50]

Hate to highjack this thread but I just ordered a set of 2" lift 52s and they measure "49 eye to eye is this right or did they send me the wrong thing. Rough Country brand.

did you measure along the arc of the spring or did you just go in a straight shot? If you measure along the arc you should be in the neighborhood of 52"

 

[nvrenuf]

I agree with Gabe's suggestion. If that's still not enough maybe try the forward most B-52 whole?

 

[buckmtn]

I measured the main leaf today eye to eye and its around 52-53". So hopefully I got the right thing. Planning on just moving the factory front mount ahead of the body mount. Will I need to move the rear hanger forward or not?

 

[muddermilitia]

I agree with Gabe's suggestion. If that's still not enough maybe try the forward most B-52 whole?

Yea I would try the forward most hole