Lot of things can cause that !
Tire balance will set it off but there has to be an underlying issue to let it happen.
Check you pan hard bushing and check for cracks at the frame where it mounts.
Delta VS Radius Arms
- Thread starter Delta VS
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Tire balance will set it off but there has to be an underlying issue to let it happen.
Check you pan hard bushing and check for cracks at the frame where it mounts.
Don’t just do a visual check on the bolts (panhard, radius arms, steering), double check the torque on them. This happened to me and would have never found it just doing a visual check or even checking by hand.
I think I found one of the culprits. I’ve had this spot cracked when I’ve got the truck 7 or so years ago. Looks like it’s got a new crack on it…not sure how deep it goes yet.
I’ve marked the bolts on the control arms and they didn’t move.
Lose control arm bolts won't cause the issue you're having. That crack will.
I would get that taken care of right away.
Don’t meant to high jack the thread…but any recommendations?
Grind everything away and weld new & triangulate some more steel on it?
Yes and there's some brace kits out there. Can't remember off the top of my head who make them..
Yeah they make the steering box reinforcement. Maybe I can built off of that.
DeltaVS makes these steering box reinforcement plates. Also a company in Australia RAMPT Customs seems to have a reinforcement or beefier bracket for pretty much every part of an 80 chassis.
Rampt customs are the ones I have seen before.
Yeah it’s a good company. I have their rear sway bar links.
Has anyone got driveline vibrations/grinding after installing these?
I’ve got about 3.5” lift. Prior to control arms the caster was at -1, after installing the caster is now at +3 .
I did have a panhard bar crack, so I did have to strip the steering components and the steering box, but I have reinstalled and retorqued everything.
While driving I noticed vibration at 60mph+. Almost feels like a tire balance vibration but I have not had that before. Also grinding sound (sounds like worn out and loose caliper, I have doubled checked all brakes, everything is good) when coming off accelerator is braking.
So I’m seeing if there’s something, or some angle that these arms create which requires a DC front drive shaft, as before I didn’t have those issues with the same lift.
EDIT: should have ready this thread about more but it does seem to be the case.
I’ve got about 3.5” lift. Prior to control arms the caster was at -1, after installing the caster is now at +3 .
I did have a panhard bar crack, so I did have to strip the steering components and the steering box, but I have reinstalled and retorqued everything.
While driving I noticed vibration at 60mph+. Almost feels like a tire balance vibration but I have not had that before. Also grinding sound (sounds like worn out and loose caliper, I have doubled checked all brakes, everything is good) when coming off accelerator is braking.
So I’m seeing if there’s something, or some angle that these arms create which requires a DC front drive shaft, as before I didn’t have those issues with the same lift.
EDIT: should have ready this thread about more but it does seem to be the case.
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What model of Rad arms from Delta? There are 2, 3, 3L...6) and what size tires you running?
I’ve got 3L arms, 35” half worn tires.
I should have also posted my alignment numbers. Before (left) is after dobinson heavy 3”s with existing OME caster bushings. After (right) is after delta arms.
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pretty normal to need a DC front shaft with castor correction methods other then cut+turn axle housing or offset trunion bearings. did you get 3 or 4 arms?
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Hey all! My Delta 3L arms came in today and I installed them right after work.
I have been driving around with 3” Dobinson front springs and 37s for about a month with ZERO drivability issues. I’ve owned it for over 12 years.
The only change today was the 3L arm install. Followed instructions. Torqued to 130 ft/lbs.
I took it for a test drive and it now has the worst death wobble. It feels like it’s going to rip itself apart. It starts between 35-40 mph and rapidly gets super violent. Only drive it about a mile and returned home.
I took a prybar to the panhard bushings and I’m not seeing any movement. Steering stuff is fairly new and all checks tight.
I’m struggling with this. I spent good coin for a proper solution and it seems to be biting me in the arse.
Old arms:
New stuff:
Any ideas?
I have been driving around with 3” Dobinson front springs and 37s for about a month with ZERO drivability issues. I’ve owned it for over 12 years.
The only change today was the 3L arm install. Followed instructions. Torqued to 130 ft/lbs.
I took it for a test drive and it now has the worst death wobble. It feels like it’s going to rip itself apart. It starts between 35-40 mph and rapidly gets super violent. Only drive it about a mile and returned home.
I took a prybar to the panhard bushings and I’m not seeing any movement. Steering stuff is fairly new and all checks tight.
I’m struggling with this. I spent good coin for a proper solution and it seems to be biting me in the arse.
Old arms:
New stuff:
Any ideas?
Happed to me to as well. Have no idea what it was. I noticed that my panhard bar was cracked so I attributed it to that, but it happened again after I fixed it.
Go to an alignment shop and get your casters measured....should be between 2-4 degrees.
If within that range of 2-4 degrees at least it eliminate the 3L.
The 3L pushes the front axle an 1" so maybe that exploited an issue that was there hidden by the caster correction bushings you had.
I would also install Delta panhard bracket if you had not done so.
Also to note
Check your wheel bearings
Knuckle studs
If within that range of 2-4 degrees at least it eliminate the 3L.
The 3L pushes the front axle an 1" so maybe that exploited an issue that was there hidden by the caster correction bushings you had.
I would also install Delta panhard bracket if you had not done so.
Also to note
Check your wheel bearings
Knuckle studs
I’m not sure it would make it to an alignment shop.
It’s THAT bad.
It’s THAT bad.
@Roostre
The OP of my 97 had the OME 3" lift and caster correction bushings. Drives a little fidgety on highways and decided to purchase the Delta 3 arms and their panhard bracket.
Had the casters measured and it was pretty much at 0 degrees for both corners.
When I took off the OEM arms with the correction bushings, the bushings had rotated.
Driving straight at 75mph now!
The OP of my 97 had the OME 3" lift and caster correction bushings. Drives a little fidgety on highways and decided to purchase the Delta 3 arms and their panhard bracket.
Had the casters measured and it was pretty much at 0 degrees for both corners.
When I took off the OEM arms with the correction bushings, the bushings had rotated.
Driving straight at 75mph now!