LX470: how well will it "carry" an ARB?

[dnp]

I have never experienced any of my LXs adjusting with the engine off. Furthermore, I see no possible way Toyota would allow them to be programmed that way, as there would be a multitude of liability issues associated with same.

This must be a mistaken observation. Otherwise, as others have said, the cars would certainly "automatically adjust" when bleeding the system.

 

[RoderickGI]

"with my heavy truck and experimental actuator spheres and oil pressures"?
can u elaborate? did u get aftermarket globes or just repressurize your old oem ones etc?

I have posted much of the information previously around here.

I have added quite a bit of weight to the LX470. It now sits at 3200 Kg instead of 2500 Kg, unloaded, when I have both spare wheels on the back and full tanks, from memory.

I added heavier springs at the rear, then cranked up the torsion bars. Both reduced the AHC pressure at Normal settings, which was supposed to give me more head room in terms of what the AHC could manage when loaded.

I bought aftermarket spheres from Active Suspensions LX 470 Suspension Accumulators | Nitrogen Globes | Land Cruiser Damping Globes, and after discussion we agreed on pressures to try in the re-pressurisable spheres. We set the pressures lower than standard, just above the reduced AHC pressures I had achieved with the suspension changes, in order to give a smooth ride.

This setup wasn't bad, but unfortunately it didn't last either due to air in the lines, or the spheres losing pressure. I have not diagnosed the problem yet, as I am not using the LX for off road work at the moment. But I have bled the lines a lot, so it probably isn't air/gas in the lines. In order to fix the problem I need to find a local company in Melbourne which can repressurise the spheres, and I will want to test them for leaks before refitting them. When I do that I will probably set the spheres back to standard pressures and adjust the TBs as required.

So for now I have a bouncy hard ride again, similar to the symptoms of failed Actuator Spheres.

 

[agaisin]

I have posted much of the information previously around here.

I have added quite a bit of weight to the LX470. It now sits at 3200 Kg instead of 2500 Kg, unloaded, when I have both spare wheels on the back and full tanks, from memory.

I added heavier springs at the rear, then cranked up the torsion bars. Both reduced the AHC pressure at Normal settings, which was supposed to give me more head room in terms of what the AHC could manage when loaded.

I bought aftermarket spheres from Active Suspensions LX 470 Suspension Accumulators | Nitrogen Globes | Land Cruiser Damping Globes, and after discussion we agreed on pressures to try in the re-pressurisable spheres. We set the pressures lower than standard, just above the reduced AHC pressures I had achieved with the suspension changes, in order to give a smooth ride.

This setup wasn't bad, but unfortunately it didn't last either due to air in the lines, or the spheres losing pressure. I have not diagnosed the problem yet, as I am not using the LX for off road work at the moment. But I have bled the lines a lot, so it probably isn't air/gas in the lines. In order to fix the problem I need to find a local company in Melbourne which can repressurise the spheres, and I will want to test them for leaks before refitting them. When I do that I will probably set the spheres back to standard pressures and adjust the TBs as required.

So for now I have a bouncy hard ride again, similar to the symptoms of failed Actuator Spheres.

sorry hadn't caught your other threads but thx for the recap. bummer on the bouncy ride... very interested to hear how that turns out. ill have to subscribe to your other threads....

makes sense you wanted to see the true pressure at the globe vs at the pump w techstrm.

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[00N8]

I'm having the same hard bouncy ride problem after installing aftermarket globes and land cruiser springs and torsion bars on my LX. I am hoping it's just air in the lines but don't know just yet.

 

[agaisin]

I'm having the same hard bouncy ride problem after installing aftermarket globes and land cruiser springs and torsion bars on my LX. I am hoping it's just air in the lines but don't know just yet.

00N8 - you've added weight but when replacing the tb's how would you have known how much to crank without reading neutral pressure - i would guess your neutral pressure is off...? definitely interested to see what happens for you too.

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[00N8]

I did get that cheapo tech stream cable and software and am having Ryan check it out for me. The bounce feels like its coming from the back end but I do want to check all angles. Torsion bar settings, air in the line, etc.

 

[agaisin]

I did get that cheapo tech stream cable and software and am having Ryan check it out for me. The bounce feels like its coming from the back end but I do want to check all angles. Torsion bar settings, air in the line, etc.

Cool! yeah check everything out. bleeding can't hurt (you should be able to see if air comes out or not so you will knowbif that was a problem or not). if you don't mind keep track of your numbers it'll be interesting to see bf and after...

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[00N8]

I had Ryan swtich out the OEM Land Cruiser springs for the old LX470 springs I had and rebleed the AHC system, so far so good. I'm going to take it on a longer drive today and see if the bouncy-ness returns.

 

[Wilsil]

Re-using an old topic.
After having to re-align the ARB Sahara bar again, I have a question for the knowledgables here.
Is it normal that the bar tilt (rear end upwards to the body work) after hitting a sand dune?
I have the feeling that the bar is to much forward and therefore coping all the hits.