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Air Ride Suspensions \  My driveshaft puls out, why?

My driveshaft puls out, why?

Air Ride Suspensions Q & A
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replies 68
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91 drggn dime   +1y
you can weld to the cast like that just fine, as long as you know how to weld to cast.
dakotamike   +1y
should be but i said move your uppers up higher and you'll be fine
mindlissmetalfab   +1y
Edited: 2/18/2007 6:49:14 PM by iLLblazer

I hope you are using the proper technique to weld to that diff. I'm noticing alot of people welding tabs to cast lately and I'm wondering how many people are actually doing it 'right'. I dont know the exact process, but I know well enough to know I'm better off making a hoop over the center section then mig welding to cast.

How much travel is it at when it pulls out the shaft? I still cant visualize that happening with a forward link setup. Raising the forward mounts for the uppers is definitely a good idea though. You want your bars pretty much parallel to each other at ride height, maybe the uppers a few degrees down, but you dont want it to reach a point in travel where the lowers start angling up while the uppers still have a huge downward angle. That is going to cause some problems.
dssur   +1y
Originally posted by NRChopShop



your uppers bars link mounts on the frame are waaaaaaay to low.

yes indeed, they need to be much higher. The upper mount on the diff needs to be further back too, and wow dont weld to cast unless you a) know what you are doing or b) want to ruin a perfectly good truck when it breaks off on the highway.
TwistedMinis   +1y
How about turning that wishbone around and weld tabs to the axle tube, and make a crossmember above the driveshaft for it to mount to.
dssur   +1y
thats a great idea
974door   +1y
Originally posted by NRChopShop



your uppers bars link mounts on the frame are waaaaaaay to low. Move the top bars front mounts up higher. the rear is moving backwards during its the 4-links arc. youre creating more of an arcing motion than a rotating motion

So what I need to do is move my link bars and my wishbone higher in the front?Make both of them parrallel?
974door   +1y
Originally posted by TwistedMinis



How about turning that wishbone around and weld tabs to the axle tube, and make a crossmember above the driveshaft for it to mount to.

I had the wishbone turned the way you are talking bout, and when i let the rear end down, it threw my pinion angle way off.My wishbone and link bars were not parallel though.
incognito 1   +1y
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Originally posted by NRChopShop


your uppers bars link mounts on the frame are waaaaaaay to low.


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agree totaly and are ur bars equal length or are ur uppers longer cause if not they should be. they need to mount the same distance apart front to back that the lowers mount. making ur triangulated bars longer in length then the lowers.
BaggedMazda87   +1y
Originally posted by 974door



Originally posted by TwistedMinis



How about turning that wishbone around and weld tabs to the axle tube, and make a crossmember above the driveshaft for it to mount to.

I had the wishbone turned the way you are talking bout, and when i let the rear end down, it threw my pinion angle way off.My wishbone and link bars were not parallel though.



But the direction of the wishbone wouldn't change that, you oviously changed the pivot points as well

no matter which way the bone faces, if the pivot points are the same it won't change pinion or travel!

like everyone's been sayin, if your bars are at much of an angle layed out, you can only expect it to move your rear end way back as the bars become level

by the looks of it, your upper bone wouldnt even be level at ride height...unless you roll like 8" off the ground...