Overland Journal Project Land Rover Discovery 4 (LR4)
- Thread starter Scott Brady
- Start date
Adrenalinsports
Member
The factory roof rack with the upper rails removed look a lot better. I loved the white LR4 from Europe with the panels for rear windows. I believe they had the same factory rack with the top rail removed.
Adrenalinsports
Member
I think I was too long winded on my first post. My question is if I have the GAP tool is there any reason I should also have the Johnson rods? Does the combo have any benefit over just using the GAP tool to lift it?
Jud
Jud
The short answer is yes, there is a reason to have both. The GAP tool will only allow a limited amount of lift. It varies with each vehicle depending on the oem position of each sensor. By having both, you can do more than with either alone.
On my particular truck, I was only able to get about 35mm of lift with the GAP tool alone. That wasn't quite as much as I wanted, so I reset it to stock then I went ahead and installed the rods and now use that as my 'base' ride height, but if I wanted to I could still adjust my base to be higher or lower using the GAP tool to fine-tune things.
morrisdl
Adventurer
I 2nd what Don said - eventually get both. I just had adj-short arms for many years. It worked great twice a year when I needed for offroading, but it was a pain to crawl under the truck and swap on and off. Last weekend two of my OEM rods ripped while removing and I was stuck with the adj rods. I left the short rods on and got the truck factory aligned and height reset to stock height (with the short arms still installed). I was worried that access height would bottom out the sensor and throw a error, but its fine. Now with the GAP EAS tool I can easily run it all the way up to the limits of the airbags if needed. The GAP tool is also a must have for dealing any suspension errors. There were a few times over the last couple years where I was wishing I had it.
This is the approach I used and I would agree with it. Additionally, as morrisdl said, the GAP tool brings other benefits in terms of diagnostics so it's handy even on it's own. Try it first and then if needed get the rods as well.
Finlayforprez
Observer
I did this and did not need the rods.
Scott Brady
Founder
It depends on the car and how much lift you want to run. There is also the advantage of being able to "force" a taller normal height for higher speed travel, particularly in rutted sandy terrain or smooth Jeep tracks with a taller center berm, etc.
Scott Brady
Founder
A few more from Hell's Revenge. Images: Chris Collard.
Scott Brady
Founder
We needed to stop for less than 5-minutes to let the compressor cool. All vehicles with air suspensions can indicate a heat warning if the compressor runs too much. In this case, I was raising and lowering the suspension with some regularity. We had the same thing happen on the trail with a new Grand Cherokee. It was not a failure or a fault, just a dash indicator that told me the suspension would raise after the compressor cooled.
Hope that answers your question. Oh, and where on earth did you even hear about that? I am certainly curious, as there was only four people there, all of which I know
Scott Brady
Founder
Yeah, the truck is still open in the rear. Christophe did engage the front locker on that climb, which helps some, but a rear locker is far superior for those conditions (if you can only have one). The rear locker is available for all LR3s, LR4s and RRSs until early 2010. ARB is working on a new bearing to allow the diff to work in the late 2010-2014 LR4s.
That climb was actually pretty technical, and a Rubicon required a few runs to clear it.