have questions about 3 link set up

flexing the yota

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Jan 25, 2008
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randleman
ive been thinking about doing this or a four link nevre seen one in person only pics could anyone tell me what i would need how much it will cost and tips ,suggestions, pics and guidance would be much appreciated its for my 84 toy.
 
Well, first of all a 3 or 4 link is alot of work, can you fabricate? do you weld good enough to trust the welds on your suspension? Have the time/tools?

I think you should spend alot of your time planning the link suspension - I spent about 4 months just researching different types of link suspensions and how people liked them. I played with a calculator as well during that time to see what kind of numbers I could turn out with the room that I had under my jeep. Keep in mind you can get very good numbers with the calculator, but it has to be able to fit too! And also you will hear something different from almost everyone about what kind of numbers you should get - I ended up around 67-89% anti-squat(built adjustablility into the suspension), 30in roll center hieght, and a 4 deg. roll axis angle. I can't remember the rest of the numbers right off hand. I would say try and keep your roll axis as close toe zero as you can, keep the roll center height as high as possible, and I would personally keep the anti-squat between 60-90% (just my opinion). And also the calulator isnt everything!!! Your rig wont always be on flat ground so the numbers will be changing constantly!! So don't get to tied up in it.

I have about 400-500$ in it and that includes the steel for making my brackets, arms, 4 johnny joints, 4 heims, jam nuts, etc. I would say I went with the cheaper route and used square tubing for my links vs. DOM, but I am sure my lowers will be fine since the are 2x2x1/4 sleeved with 1.5x1.5x1/4:driver:.

A couple things that I think I would have done differently already are...figure out a way to mount the lower links about the bottow of the frame rails and keep lowers shorter than ~38-40"

I think thats all I got for ya....I hope that helps some...I'm still learning about all this link suspension myself so somebody correct me if I'm steering him in the wrong direction.

Heres a few pics of my rear 4 link...
ai215.photobucket.com_albums_cc27_fmtndrummer_DSC00416.jpg

1 more
ai215.photobucket.com_albums_cc27_fmtndrummer_DSC00400.jpg

Goodluck man...and I assume you were talking about fabin up the 3 or 4 link yourself in the original post? haha I hope so...
 
thanxx alot for the info but could you steer me in the direction to figure all of the numbers. i know nothing about this but im not going to pay some one im a doit my selfer. what did you do for your shocks. from what ive seen they just did away with every thing and put air shock or coilovers on am i right or wrong
 
Well since my jeep already has coil springs out back I just kept those back there. I've seen alot of the toyota guys run air shocks with 4 link set-ups. To get the numbers you just plug them into the calculator and go to town and see what it says they are. You can get the calculator off like google or something....just search 4 bar linkage claculator v3.0.
 
tanx for the calc. but im not sure what some of this stuff means
 
Ya it took me a while to figure out what it was asking for...but for example "this is 1/2 of your lower link seperation at the axle end." This is asking how far apart your lower links are going to be from each other on the axle end. If they are going to be a total of 40" (eye to eye of the joint) then you would enter 20 for this value. Kinda get what I'm saying?
 
you are speaking a total different language to me here sorry
 
if you are having a tough time understanding what he's talking about, you might want to consider picking up a book about link suspensions. I've never read one, but I know there are a few out there. Some people here can probably tell you where to find a few texts to read through. It can be pretty heavy stuff to belabor on
 
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