4Runner lift: Rear X-REAS relocation
#21
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Originally Posted by bulldog-yota
Dave, my concern is with the fact that the force on compression is far higher than on extension. Shocks should easily take the force on extension, but the force on compression is a very different issue. I dont know if Toyota allowed enough play in the original design that will allow an extra couple of inches of shock travel on compression. That is why I would like to see pics of an XREAS system with relocs and full compression, and where the bumpstops and axle sit. Maybe it is fine maybe not, I dont know and I have not seen any evidence to either effect. If it works for you great.
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Originally Posted by Good Times
Dave, Opinions/idea flows is what makes all of us a more edumacated individual. That said I"m not attacking you in any way shape or form. I am just concerned that's all. It is obvious that this application has worked for you at the current moment.
Originally Posted by Good Times
As we all modify our rigs, we must not forget that safety is the number one concern. This is because it can affect you directly or indirectly and have a likelihood to cause harm to others.
That said, do you feel confident enough to rest your life on a suspension component that has a high probability that it has not been tested enough?
That said, do you feel confident enough to rest your life on a suspension component that has a high probability that it has not been tested enough?
One - I think you are greatly overexagerating the safety potential here. We are talking about a rear shock mount, not a life or death suspension component. I have driven vehicles with broken shocks before and it is not a major safety concern. In fact, I had a 71 duster (yeah, I'm gettin old) in chicago and was driving in the snow when a pothole jumped out and ripped the front left torsion bar out of the frame! I still was able to drive home, albeit at a left sloping front angle! The point I am trying to make is that while I take safety seriously, I just don't see this component from NE posing any major problems.
Two - I don't believe the pressure exerted on this shock mount comes anywhere near to what it would have to be to cause breakage, under any circumstance. We're talking about a solid stainless rod with grade 8 hardware. The rear of this vehicle just doesn't carry the potential to break that, unless I try some dukes of hazzard stunt!
I achieved full compression of the rear on a number of instances on my Sibley Mansion trip without any problems at all. I posted one of these pics in another thread. There were spots much worse than these and I had a lot of weight in the vehicle for the most part. (unless someone was out takin pics or spottin!)
Originally Posted by Good Times
Even though NE has only been around for a short period, their quality in the products they developed from the beginning was sub par. Taking this into consideration you are still willing to look the other way just because it looks strong? Keep in mind that you do agree that these are not perfect yet you still have em.
Originally Posted by Good Times
The hole that NE used has been around in the previous gen 4runners as well, yet none of the vendors bothered to use it as a replacement shock mounting location. Maybe there's a reason behind it or they just figured it'd be easier to just get longer shocks but that is some food for thought. If you really are not sure, I'd ask Revtek or even Daystar (since they've been around along time in the suspension industry) and see what they think of the reloc setup. Since you're in Mesa, I know Daystar is not that far from you (well closer than me where I"m in Los Angeles.) I'm pretty confident they'd either laugh or say "no comment" since it's not their product. Or ask them if they would make something similar that is better and stronger that will replace this NE reloc.
Originally Posted by Good Times
Anyway, I just think it's not worth the risk for anyone to run something that has not been tested and verified especially when it comes down to suspension component. Anything can go wrong and if something does, you're just asking for it. They had a great conceptual idea but unfortunately, I don't think they did all the homework to ensure the safety in everyone.
Originally Posted by Bluto
The Daystar does 2" rear (extending the shock travel 2"). The relocs move the shock location about 2.5" (reducing travel by 2.5"). So under compression the extra 0.5" is the problem?
Here's lookin at you from the mining roads of AZ!
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Originally Posted by 4run4fun
As I said to FirstToy, your comments/thoughts/opinions won't offend me. And I'm ok with us not agreeing too.
Originally Posted by 4run4fun
In fact, I had a 71 duster (yeah, I'm gettin old)
Originally Posted by 4run4fun
I don't have a problem with the quality of the Relocs. The design could be improved upon in my estimation, but it is functional and I have no real concerns about it. I am not "looking the other way", rather I have evaluated this part and based on my 30 years of working on cars I have concluded that it is suitable for the purpose. Hey, the manufacturer put sub par tires on the thing (Dunflops) right from the factory. I lost one of them on my first offroad trip. Certainly a greater potential for safety problems with poor quality tires. Did the manufacturer/dealer just look the other way? Nah!
Originally Posted by 4run4fun
Sometimes new ideas are born out of what seems obvious. That is what I thought when I first saw NE's design (the later design, not the first one). There have been many, many products that the big guys simply missed. BTW - Daystar in Phoenix gave me my lift for free! (Thanks to a member on this board and Dan at Daystar!) It was a test before bringing the product to market, so I guess It has not been fully tested either! I am the test! The test R us!
Originally Posted by 4run4fun
As I have already stated, I have no real concerns here. Anything can go wrong with anything! With the off roading that I do I have a much greater chance of breaking an axle, cv, cardigan joint, etc. So far the reloc has tested out fine for me. I am fine with continuing the test. If it breaks I will say you told me so!
One of these days, we can all get together and have a cold one on the trail FirstToy will provide the for us
#24
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http://rockstomper.com/catalog/pieces/hinge.htm
The link above is for a tire carrier hinge which uses a trailer axle rated for 1000lbs. That's a 1.25" diameter piece of steel which is most likely not ordinary steel and certainly not stainless steel. There's a safety factor in there somewhere, probably around 3. That means it can probably hold at least 3000lbs without breaking.
Most tire carriers weigh less than 100lbs. It seems pretty strong, yet there are numerous cases in which people have had their tire carrier snap off after hitting a small bump. How can this happen? Most people attribute the failure to fatigue. If a cyclic force of sufficient magnitude is exerted on steel for enough cycles (100,000 - 1,000,000 - 10,000,000+) the steel will break. The magnitude of the force required to fail something in fatigue is surprisingly low.
Also, people have stated above, the grade 5 or 8 or 2 bolts don't do anything other than retain the shock. The bolts provide negligable structural support.
The link above is for a tire carrier hinge which uses a trailer axle rated for 1000lbs. That's a 1.25" diameter piece of steel which is most likely not ordinary steel and certainly not stainless steel. There's a safety factor in there somewhere, probably around 3. That means it can probably hold at least 3000lbs without breaking.
Most tire carriers weigh less than 100lbs. It seems pretty strong, yet there are numerous cases in which people have had their tire carrier snap off after hitting a small bump. How can this happen? Most people attribute the failure to fatigue. If a cyclic force of sufficient magnitude is exerted on steel for enough cycles (100,000 - 1,000,000 - 10,000,000+) the steel will break. The magnitude of the force required to fail something in fatigue is surprisingly low.
Also, people have stated above, the grade 5 or 8 or 2 bolts don't do anything other than retain the shock. The bolts provide negligable structural support.
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Originally Posted by Bluto
The Daystar does 2" rear (extending the shock travel 2"). The relocs move the shock location about 2.5" (reducing travel by 2.5"). So under compression the extra 0.5" is the problem?
#27
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Looks like 2 xreas system with the reloc has caused the system to fail. Both system are non functional now and requires complete replacement of the entire system ($$$). There is no confirmation on whether or not the reloc was the sole case but based on observation it does look like the reloc was the factor.
#28
Lance ... is mine one of the two you're referring to?
PM me or something and let me know if you think that's what it is. Unlike RL's, mine still feels like it has shocks, but it sways a lot from side to side and sounds horrible when going over a bump.
PM me or something and let me know if you think that's what it is. Unlike RL's, mine still feels like it has shocks, but it sways a lot from side to side and sounds horrible when going over a bump.
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Mine hasn't failed yet, but there is a high-pitched sound when going over bumps. Crap, I really don't need this. I am at work and don't have time to review all the posts, can I just move the bolt down to the original hole? Any other fixes so I don't ruin my X-REAS?
#31
kris,
with 2.5" of lift you will be more than fine without the re-locs ... take them off as soon as you have the chance to do so. Daystar's lift is 2.5" in front and 2" in rear and they say it's fine with XREAS, and they don't include longer shocks or anything. so just take the re-locs off and put it back to the original mount asap.
with 2.5" of lift you will be more than fine without the re-locs ... take them off as soon as you have the chance to do so. Daystar's lift is 2.5" in front and 2" in rear and they say it's fine with XREAS, and they don't include longer shocks or anything. so just take the re-locs off and put it back to the original mount asap.
#32
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Rocky (or somebody else familiar with the product), can I use the bolt that was provided with the NE kit and put that back in the original bolt hole or do I need to use the original bolt, it is probably around somewhere, but not sure where.
#33
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Use the factory bolt.
EDIT:
Because the threading might be different even the strength on those bolts might be crap. Better safe to go back to factory.
EDIT:
Because the threading might be different even the strength on those bolts might be crap. Better safe to go back to factory.
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Thanks guys. In case I can't find the original factory bolt, I called my dealership and they say it is part number 90119A0018 ($5.22). Not that I don't trust them but . . . any way to independently confirm the part number. Of course, it will take a week to get here . . .
#36
The smudge on the midpoint of the shock is where I wiped off some type of recently leaked fluid. the entire bottom half of the shock is covered in this from the last few months. The fluid I wiped off tonight was dark and oily/greasy.
#37
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After reading this and the other (NE) thread on the subject I am concerned. I am on the road at the moment, so I will take a look at my rears when I get back to AZ. I have not had any strange noises while driving it around town though, and I put 50-60 miles on per day. I also have done some significant wheeling which involved heavy compression and stretch with no apparent problems at that time.
While I am no mechanical engineer, it would not seem that the relocs could cause this kind of stress though. The reason I say this is because thier location was within a half of an inch of where the shock naturally rested. Would a shock have that tight of a travel tolerance?
Maybe the whole XREAS idea on a truck was not really a good one? It would seem to me that Toyota would have thouroughly tested this system in various conditions. In their early online video's etc. they indicated that this system was developed in an off road environment and that it was meant for the purpose. It's the main reason I bought the Sport edition, which is the model that they targeted toward the off roader.
I'll let you all know what I see as soon as I can.
While I am no mechanical engineer, it would not seem that the relocs could cause this kind of stress though. The reason I say this is because thier location was within a half of an inch of where the shock naturally rested. Would a shock have that tight of a travel tolerance?
Maybe the whole XREAS idea on a truck was not really a good one? It would seem to me that Toyota would have thouroughly tested this system in various conditions. In their early online video's etc. they indicated that this system was developed in an off road environment and that it was meant for the purpose. It's the main reason I bought the Sport edition, which is the model that they targeted toward the off roader.
I'll let you all know what I see as soon as I can.
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The problem is that it is not an 1/2" difference but 2-3" difference. Just because you have a spacer in doesn't mean your axle can't still move up all the way. That is why suspensions have bumpstops to limit compression. The bumpstops were not modified to my knowledge which means the shocks has to deal with 2-3" of extra travel on compression. I have yet to see anybody with a Revtek or Daystar kit with issues on their XREAS or running stock.
THat is why I wanted to see where the bumpstop and axle sit at full compression now compared to stock. AT least with droop the swaybar takes a lot of the force of the actual shock extension. This help will obviously go away once you disconnect the swaybar, a reason why on more extreme suspension setups people use limiting straps.
But it is up to everybody to judge for themsleves, I just find in interesting that I now know of only 2 people who have had issues with their XREAS system and both were running NE relocs.
THat is why I wanted to see where the bumpstop and axle sit at full compression now compared to stock. AT least with droop the swaybar takes a lot of the force of the actual shock extension. This help will obviously go away once you disconnect the swaybar, a reason why on more extreme suspension setups people use limiting straps.
But it is up to everybody to judge for themsleves, I just find in interesting that I now know of only 2 people who have had issues with their XREAS system and both were running NE relocs.
#40
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The NE lift is higher, so that certainly has potential to contribute to the problem.
I have a Daystar lift, installed by them. I was the second 4th gen to have this lift and they did it for free as a final test before releasing the product to the world. While Daystar has a history of solid product and a lot of experience, no one has experience with lifting the XREAS equipped 4runners. Therefore, those of us who have lifted rigs with XREAS are the test group.
I would never defend NE as I have seen enough in the comments of others to judge them to be a fraudulent opperation. The quality of their spacers is clearly bad. Time will tell if this is true of the relocs. As I understand it these were made, not by AK, but by some local machine shop. The work 'looks' sound. However, as acknowledged, they have not been tested. Could the leakage be solely due to problems with the spacers rather than the relocs? I don't know if anyone can say, yet.
Now I can't wait to get home and take a look under the truck!
I have a Daystar lift, installed by them. I was the second 4th gen to have this lift and they did it for free as a final test before releasing the product to the world. While Daystar has a history of solid product and a lot of experience, no one has experience with lifting the XREAS equipped 4runners. Therefore, those of us who have lifted rigs with XREAS are the test group.
I would never defend NE as I have seen enough in the comments of others to judge them to be a fraudulent opperation. The quality of their spacers is clearly bad. Time will tell if this is true of the relocs. As I understand it these were made, not by AK, but by some local machine shop. The work 'looks' sound. However, as acknowledged, they have not been tested. Could the leakage be solely due to problems with the spacers rather than the relocs? I don't know if anyone can say, yet.
Now I can't wait to get home and take a look under the truck!