What Did You Do With Your 120 Today? (2 Viewers)

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I don’t think I’d trust rivnuts alone to run a slider for slider purposes. But I have no idea what the strength of 10+ rivnuts holding a slider to to a frame is compared to factory welded nuts or the U-bolt setups.

Except for metaltech and white knuckle, everyone uses factory mounting points or a mix of factory plus thru bolts, such as RRW and RSG.

I have the RSGs and they use huge thru bolts with backing washers in addition to the OEM weld nuts on the outer frame surface. RRW wraps the underside of the frame for additional mount in points which to me is a stronger design than the RSGs.

in most cases short of rock crawling it doesnt matter much.
 
I don’t think I’d trust rivnuts alone to run a slider for slider purposes. But I have no idea what the strength of 10+ rivnuts holding a slider to to a frame is compared to factory welded nuts or the U-bolt setups.

Except for metaltech and white knuckle, everyone uses factory mounting points or a mix of factory plus thru bolts, such as RRW and RSG.

I have the RSGs and they use huge thru bolts with backing washers in addition to the OEM weld nuts on the outer frame surface. RRW wraps the underside of the frame for additional mount in points which to me is a stronger design than the RSGs.

in most cases short of rock crawling it doesnt matter much.
A single M8x1.25 rivut has a maximums upset load strength of 13,434 N / 3,020 lbs:

Between the rivnuts and OEM nutserts (presumably stronger than a rivnut), that results in a ultimate tensile load of 39,261 lbs per side (13 total fasteners). So you have a factor of safety of 7.8 relative to the weight of a GX.

Shear strength would be limited by the grade 10.9 M8 bolt (rather than the rivnut), which is 14,600 N / 3,282 lbs:

So, any attachment point using 10+ M8 bolts, whether rivnut or OEM nuts, should be far stronger than any GX would ever see. The sliders or the frame would buckle far before the bolts/rivnuts would become the limiting factor. I installed a test rivnut this weekend and was quite impressed by it; I see no way they could fail during normal use.
 
A single M8x1.25 rivut has a maximums upset load strength of 13,434 N / 3,020 lbs:

Between the rivnuts and OEM nutserts (presumably stronger than a rivnut), that results in a ultimate tensile load of 39,261 lbs per side (13 total fasteners). So you have a factor of safety of 7.8 relative to the weight of a GX.

Shear strength would be limited by the grade 10.9 M8 bolt (rather than the rivnut), which is 14,600 N / 3,282 lbs:

So, any attachment point using 10+ M8 bolts, whether rivnut or OEM nuts, should be far stronger than any GX would ever see. The sliders or the frame would buckle far before the bolts/rivnuts would become the limiting factor. I installed a test rivnut this weekend and was quite impressed by it; I see no way they could fail during normal use.

I appreciate the technical perspective! Makes me feel better about my own bolt ons as well.
 
I appreciate the technical perspective! Makes me feel better about my own bolt ons as well.
No problem. I'm an engineer (albeit not structural) and never would have installed sliders using rivnuts without looking up the capacity. I'm also planning to use some smaller rivnuts for an eventual DIY rear door table; they seem to be a great product.
 
Ordered the non-nav HVAC controls + bracket today. Really happy with the price: $220 out the door, and per the pictures there aren’t any scratches.

Got some time off at the end of May to do the install. Will try and video / photograph the entire process as much as possible to add to the walkthrough thread here.

In the meantime I need to figure out what amp I want to use with the android head unit and ML speakers.
 
Finally install eimkeith panhard correction bracket. Been puting it away while running 1.75 " rear lift. After stepping to 3" lift notice it become harder and drive comfortably on the highway. Every bump on the road cause the vehicle to feel twitchy.

Replace LCA bushing and tie rod with minimal differences. I am actually amazed at how this simple bracket helps. Roll center greatly improved and combined with KDSS makes cornering too much fun. I squeal my skinny tires a few times just during the first test drive.
 
Finally install eimkeith panhard correction bracket. Been puting it away while running 1.75 " rear lift. After stepping to 3" lift notice it become harder and drive comfortably on the highway. Every bump on the road cause the vehicle to feel twitchy.

Replace LCA bushing and tie rod with minimal differences. I am actually amazed at how this simple bracket helps. Roll center greatly improved and combined with KDSS makes cornering too much fun. I squeal my skinny tires a few times just during the first test drive.
Are you running stock or adjustable panhard bar?
 
Are you running stock or adjustable panhard bar?
Stock. Adjustable panhard are waste of money IMHO. It only center the rear axle statically. It does not correct the geometry to make panhard bar to work properly.

The eimkeith panhard relocation move the bar closer to parallel reducing the side to side movement when suspension cycles and also correct the roll center closer to the original design.

The welding is the concern for most people and why some select adjustable panhard. I did mine at home with 110volt MIG and it did fine.
 
Stock. Adjustable panhard are waste of money IMHO. It only center the rear axle statically. It does not correct the geometry to make panhard bar to work properly.

The eimkeith panhard relocation move the bar closer to parallel reducing the side to side movement when suspension cycles and also correct the roll center closer to the original design.

The welding is the concern for most people and why some select adjustable panhard. I did mine at home with 110volt MIG and it did fine.
Looks like a good product. I plan to put a Ironman FCP lift on my GX this winter, but $300 for an adjustable panhard bar is just too much. $100 for a bracket sounds must better. I also have a 110v welder and have found it to be incredibly useful for light fabrication associated with GX mods (as well as other household projects).
 
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Stock. Adjustable panhard are waste of money IMHO. It only center the rear axle statically. It does not correct the geometry to make panhard bar to work properly.

The eimkeith panhard relocation move the bar closer to parallel reducing the side to side movement when suspension cycles and also correct the roll center closer to the original design.

The welding is the concern for most people and why some select adjustable panhard. I did mine at home with 110volt MIG and it did fine.
Adjustable pan hard absolutely can help the suspension geometry. If you increase suspension travel but leave the panhard stock, then your sagitta increases. One way to get your sagitta back to oem is changing the length of your panhard.

the panhard relocation bracket basically does the same thing via other means. Instead of changing panhard length (radius in the sagitta calculation), it compensates for the change in travel relative to stock (changes the chord length for the sagitta calculation).
 
Adjustable pan hard absolutely can help the suspension geometry. If you increase suspension travel but leave the panhard stock, then your sagitta increases. One way to get your sagitta back to oem is changing the length of your panhard.

the panhard relocation bracket basically does the same thing via other means. Instead of changing panhard length (radius in the sagitta calculation), it compensates for the change in travel relative to stock (changes the chord length for the sagitta calculation).
In front solid axle this is very true since you have to match the angle and length of steering drag link.
On the rear of GX there are no steering linkage. Adjustable panhard only center the wheel at static height. It would move a lot more to the right when suspension unload than moving left when it compress. This is the one that makes the rear end wiggle and impact tracking. The panhard work the best when they are mounted as close to horizontal at ride height. That way the movement left and right would stay even and minimal during normal suspension cycle.
 
In front solid axle this is very true since you have to match the angle and length of steering drag link.
On the rear of GX there are no steering linkage. Adjustable panhard only center the wheel at static height. It would move a lot more to the right when suspension unload than moving left when it compress. This is the one that makes the rear end wiggle and impact tracking. The panhard work the best when they are mounted as close to horizontal at ride height. That way the movement left and right would stay even and minimal during normal suspension cycle.

the horizontal wiggle in the rear is what I’m talking about. That horizontal movement as a panhard bar articulates is the sagitta. Calculating the sagitta has 2 components: the radius of the circle and the chord being traversed. For a panhard bar and suspension, the radius is 1/2 the length of the panhard and the chord is the suspension travel distance.

when you increase the chord length (add suspension travel) and keep the panhard length fixed, the sagitta increases (horizontal movement goes up).

increasing the length of the panhard bar can correct the horizontal movement back to stock. It doesn’t change the angle of the panhard bar back to stock. It does fix the wiggle though.
 
Utterly miserable day with the GX. Took it to a shop that has done awesome maintenance work for me over the last 2 years and had an awful experience.

was supposed to be a basic check up ahead of a road trip in May, and asked them to try and diagnose some creaky, squeaky suspension noises (icon stage 2 and SPC light racing UCAs with < 10k miles).

get a call an hour or so later claiming i need 1 major and 1 minor repair:
  1. front kdss sway bar is tilted severely (up on the passenger side, down on the drivers side) and has slipped so far to the driver's side that it's rubbing the steering knuckle on turns. fix: all new bushings for the front kdss sway bar and a "reset procedure" (cracking the actuators and letting the truck level back out)
  2. brake fluid flushed and replaced
confused at these suggestions because the "kdss reset" and a brake fluid flush were done at this shop's other location (not a chain, just 2 locations here in GA) back in September. i mention this to the guy at the shop, and he says that the 2 locations don't share records, but he'll reach out to them and sort things out.

this leads to back and forth calls with the shop service rep throughout the day. im told that the brake fluid needing to be replaced again is "totally normal" and that the other shop has no records anywhere that mention the kdss bushings being shot and the sway bar off kilter. that all they did was the re-leveling procedure, never touched the sway bar, and that "someone" must have loosened the bolts after they worked on it, and that's why my sway bar is all out whack. in short, i have no leg to stand on for a warranty claim.

well, this is odd, because i have a diagnostic record from the other location prior to the kdss reset procedure stating i need new bushings and a new sway bar, with pictures of the sway bar off kilter and rubbing the knuckle. hell, i have the bushings in my truck. they've been there since i brought it in for the kdss reset where i was told that the other tech was wrong and all they needed to do was reset the kdss.

i explain this to the service tech. apologize for him having to keep going back and forth between me and the other shop. he says he'll get back to me.

get another call from a more senior person at the shop. same thing. claims they have no records anywhere describing the sway bar or bushings. says he doesnt like that im insinuating they're trying to avoid honoring the warranty. things get heated, and he says that i need to decide if i want to pick up the truck or pay to have them fix the issues. out of frustration, i kind of snap and say im not insinuating anything - that im pretty clearly accusing them of dodging the warranty and taking accountability for their work.

10 minutes later i get to the shop and, wow, complete 180 by the service rep. magically he found records in that 10 minute window that he never found alllll day in hours of talking with ownership and the other shop. guess what? those records show that im right. they show that the other shop botched the repair, and they want to fix the work for free to make things right.

im floored. they're never touching that truck again. 5 hours of phone calls, getting called a liar, getting accused of trying to cheat them out of a warranty claim, and then, only after i say im taking my truck home, they find the records. i've worked in consulting for the last 6 years. issues happen with unhappy clients. if ever called a client a liar when there was a piece of evidence that i was wrong, i'd be s*** canned so fast.

if anyone has a shop in GA that knows this platform and does good work, let me know. i love ACC, but they've got like a 4 week lead time right now. im hesitant to let things go that long, especially with a road trip planned in may. i'd do the work myself, but i don't have a flat piece of pavement to put the truck on jack stands.
 
If you're just needing some suspension related stuff, perhaps check into Butler tire. They do everything from lifted, to lowered, and deal with alot of luxury vehicles so their level of customer service has to work accordingly.

I've personally been a customer of Butler tire for many years and if they ever got something wrong they fixed it right, and they have always treated me with respect. I also know the guy that runs the Buckhead location (he used to run Johns Creek location for many years). He's a very active member of the BMW community and Butler has sponsored the Peachtree Chapter for many years and supports lots of events. Their customer service and treatment of your vehicle is always top notch in my opinion. They deal with Lambo's, G-wagens, and you name it high end vehicle, so they're used to a wide variety of clients so I think they'd treat you right.

That said, I hope you just didn't have this experience with them. I'd be very surprised. Sorry that happened wherever you went.

Also, I've never been to these guys, but being they seem to be Lexus specific.. you'd think they'd know a thing or two. Google reviews seem high.
 
If you're just needing some suspension related stuff, perhaps check into Butler tire. They do everything from lifted, to lowered, and deal with alot of luxury vehicles so their level of customer service has to work accordingly.

I've personally been a customer of Butler tire for many years and if they ever got something wrong they fixed it right, and they have always treated me with respect. I also know the guy that runs the Buckhead location (he used to run Johns Creek location for many years). He's a very active member of the BMW community and Butler has sponsored the Peachtree Chapter for many years and supports lots of events. Their customer service and treatment of your vehicle is always top notch in my opinion. They deal with Lambo's, G-wagens, and you name it high end vehicle, so they're used to a wide variety of clients so I think they'd treat you right.

That said, I hope you just didn't have this experience with them. I'd be very surprised. Sorry that happened wherever you went.

Also, I've never been to these guys, but being they seem to be Lexus specific.. you'd think they'd know a thing or two. Google reviews seem high.
Thank you for the Butler suggestion. I didn’t realize Butler does that kind of work. That’s great. They’ve been phenomenal with alignments for me, and have had excellent customer service. I’ll give them a ring.

I didn’t want to name and shame, but the shop you linked is indeed the shop I had this issue with. Had a pretty stellar relationship with them prior to this KDSS stuff.
 
Thank you for the Butler suggestion. I didn’t realize Butler does that kind of work. That’s great. They’ve been phenomenal with alignments for me, and have had excellent customer service. I’ll give them a ring.

I didn’t want to name and shame, but the shop you linked is indeed the shop I had this issue with. Had a pretty stellar relationship with them prior to this KDSS stuff.

That sucks to hear. I mean, yeah just call around to Butler see what they say. If not I can't say I have a recommendation in ATL.
 
Didn't "do" anything with the GX today. But took a huge step towards lifting it by ordering all new Dobinsons MRA suspension for it!
(Pssst, i know... this is a way old post to quote ;)
dja get them on?? :geek:
 

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