4 link clearance question... - Pirate4x4.Com : 4x4 and Off-Road Forum

MudTJ · 01-19-2006, 08:49 PM

I'm building a 4 link and doing a rear wheelbase stretch(100") on my TJ. I got all the old frame mounts cut off and built an over axle truss to drop into the stock uppercontrol arm brackets on my dana 44, i would have built it straight off the tubes but i want to be able to sell this axle later and get a 60 or 14 bolt so i wanted it removable. I plan on only triabgulating the uppers and leving the lowers pretty much straight. I'm trying to leave the stock brackets on the axle alone so i measured and the inside to inside diminsion on the lower contol arm brackets is about 41.5-42 inches the frame is about 43 inches wide outside to outside, so i had the idea of trying to make my lower control arms mount to the outside of the frame instead of under it for better breakover angle. i set the axle into place and took some measurements and the control arms(made from 1.5inch solid round bar) will clear with about .5-.75 inch of clearance from the side of frame at ride height or any time the axle is level actually. What i'm trying to figure out is if the arms are going to pivot inwards, outwards or stay about the same as the jeep flexes and one side stuffs into the fender, i'm afraid it will make the control arm come closer and contact the frame as that side stuffs but i don't have any way to figure it out without just building the whole link setup and testing it. I ran some #'s in the 4 link calculator but i didn't see anywhere that it would help me out with this issue. Anyone got an idea what it will do?

oh and just for the hell of it, here are a few pics of the truss after bieng welded up over at a buddies house, i don't have a camera so i don't have pics of it mounted on the axle...

MudTJ · 01-19-2006, 09:56 PM

sorry i accidentally double posted this, damn internet browser, i deleted the other thread but it still shows up

MudTJ · 01-20-2006, 01:22 PM

Anyone even have an idea? i'm gonna start cutting the material for the arms tomorrow and i really don't want to screw them up and have to build new ones cause the material was expensive

01-19-2006, 08:49 PM	#1 (permalink)
MudTJ Registered User Join Date: Oct 2004 Member # 37430 Location: Jackson and Starkville, MS Posts: 288	4 link clearance question... I'm building a 4 link and doing a rear wheelbase stretch(100") on my TJ. I got all the old frame mounts cut off and built an over axle truss to drop into the stock uppercontrol arm brackets on my dana 44, i would have built it straight off the tubes but i want to be able to sell this axle later and get a 60 or 14 bolt so i wanted it removable. I plan on only triabgulating the uppers and leving the lowers pretty much straight. I'm trying to leave the stock brackets on the axle alone so i measured and the inside to inside diminsion on the lower contol arm brackets is about 41.5-42 inches the frame is about 43 inches wide outside to outside, so i had the idea of trying to make my lower control arms mount to the outside of the frame instead of under it for better breakover angle. i set the axle into place and took some measurements and the control arms(made from 1.5inch solid round bar) will clear with about .5-.75 inch of clearance from the side of frame at ride height or any time the axle is level actually. What i'm trying to figure out is if the arms are going to pivot inwards, outwards or stay about the same as the jeep flexes and one side stuffs into the fender, i'm afraid it will make the control arm come closer and contact the frame as that side stuffs but i don't have any way to figure it out without just building the whole link setup and testing it. I ran some #'s in the 4 link calculator but i didn't see anywhere that it would help me out with this issue. Anyone got an idea what it will do? oh and just for the hell of it, here are a few pics of the truss after bieng welded up over at a buddies house, i don't have a camera so i don't have pics of it mounted on the axle... Last edited by MudTJ; 01-19-2006 at 09:55 PM.

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01-19-2006, 09:56 PM	#2 (permalink)
MudTJ Registered User Join Date: Oct 2004 Member # 37430 Location: Jackson and Starkville, MS Posts: 288	sorry i accidentally double posted this, damn internet browser, i deleted the other thread but it still shows up

01-20-2006, 01:22 PM	#3 (permalink)
MudTJ Registered User Join Date: Oct 2004 Member # 37430 Location: Jackson and Starkville, MS Posts: 288	Anyone even have an idea? i'm gonna start cutting the material for the arms tomorrow and i really don't want to screw them up and have to build new ones cause the material was expensive