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So here is a little background and my problem...
Back in May I put a 78/79 Ford Dana 60 under the front of my JK along with a 14 bolt rear. The wheels are Racelines with the steel rings. The tires are 40" MTRs. I also have a 3.5" RK lift and am running the Poly track bar frame side bracket and a Rock Solid track bar that came with my steering box stabilizer. I put 12 ounces of air soft bb's in the tires when I mounted them.
So I got it all together and I had noticed a bit of a shimmy at around 50mph. It wasn't bad, but pretty noticeable. Then, sometimes when I would hit a bump around 45mph it would go into what I call a "semi-death wobble". I say semi because if I were to slow down a few mph, like below 45, or speed up to over 50, it would cure itself. But it did have that same violent left right shake.
I read on Pirate that a common cause was not enough spring tension for the bigger tires on the kingpin. So I added some washers under the cap like people had said cured their problem.
I also had been told that 12oz of beads was too light for the tires. At this point my spare tire had not been mounted yet. So I put in the 17oz into that, put it on the driver side front. Took the driver side front tire off, put in 5oz more, and then moved that to passenger front. The passenger front is currently sitting in the garage.
I went for a drive to work and everything seemed ok. Until last night on my way home I was doing some higher speed driving and the problem has actually gotten worse. The Jeep is actually pretty much undriveable between ~45-50mph. Wobble still goes away when I slow down a little or speed up.
I know it's a pretty broad question..but any suggestions before I really start tearing stuff apart?
TIA
Back in May I put a 78/79 Ford Dana 60 under the front of my JK along with a 14 bolt rear. The wheels are Racelines with the steel rings. The tires are 40" MTRs. I also have a 3.5" RK lift and am running the Poly track bar frame side bracket and a Rock Solid track bar that came with my steering box stabilizer. I put 12 ounces of air soft bb's in the tires when I mounted them.
So I got it all together and I had noticed a bit of a shimmy at around 50mph. It wasn't bad, but pretty noticeable. Then, sometimes when I would hit a bump around 45mph it would go into what I call a "semi-death wobble". I say semi because if I were to slow down a few mph, like below 45, or speed up to over 50, it would cure itself. But it did have that same violent left right shake.
I read on Pirate that a common cause was not enough spring tension for the bigger tires on the kingpin. So I added some washers under the cap like people had said cured their problem.
I also had been told that 12oz of beads was too light for the tires. At this point my spare tire had not been mounted yet. So I put in the 17oz into that, put it on the driver side front. Took the driver side front tire off, put in 5oz more, and then moved that to passenger front. The passenger front is currently sitting in the garage.
I went for a drive to work and everything seemed ok. Until last night on my way home I was doing some higher speed driving and the problem has actually gotten worse. The Jeep is actually pretty much undriveable between ~45-50mph. Wobble still goes away when I slow down a little or speed up.
I know it's a pretty broad question..but any suggestions before I really start tearing stuff apart?
TIA
