Float and sway after lift install, questions

[stellite]

So, after installing the Dobinsons MRR lift and getting a solid 2.5 inch front and back, maybe more in back, I noticed a lot of side to side sway and float. Like a boat on a wave. I played with compression and rebound and reduced much of it. But it is still there. I have a panhard rod correction bracket on the way, which I know should help a lot. However, I am thinking that the sway bars are to small and I may need to increase their size. Has anyone that has lifted their truck done sway bars as well?

here is the truck

 

[Heckraiser]

First thing that needs to be said: It is not too common for LX570 owners to install aftermarket lifts since the stock AHC suspension is capable of lifting itself more than 2 inches for offroad use. What you did by installing aftermarket suspension, is you've taken AHC's anti-roll mojo out of the equation. A lot of the anti-roll of the LX570 actually comes from the functionality of the AHC, and not the swaybars themselves. With AHC disabled, you're going to get a lot more sway compared to someone who lifts their Toyota LC200.

There are aftermarket swaybars available. Whiteline comes to mind, but there are a few others. You could also source a set of swaybars from an overseas "standard suspension" Land Cruiser (i.e. one that is not fitted with AHC or KDSS). All US LC200's have KDSS and all US LX570's have AHC, so you'll have to find these from a non-US source.

Curious for your thoughts on the Dobs MRR suspension compared to stock.

 

[stellite]

First thing that needs to be said: It is not too common for LX570 owners to install aftermarket lifts since the stock AHC suspension is capable of lifting itself more than 2 inches for offroad use. What you did by installing aftermarket suspension, is you've taken AHC's anti-roll mojo out of the equation. A lot of the anti-roll of the LX570 actually comes from the functionality of the AHC, and not the swaybars themselves. With AHC disabled, you're going to get a lot more sway compared to someone who lifts their Toyota LC200.

There are aftermarket swaybars available. Whiteline comes to mind, but there are a few others. You could also source a set of swaybars from an overseas "standard suspension" Land Cruiser (i.e. one that is not fitted with AHC or KDSS).

Curious for your thoughts on the Dobs MRR suspension compared to stock.

I like the LC sway bar idea.

I have yet to do any serious trails with it, so keep that in mind. However, I am surprised at how plush it feels even with me cranking settings up to about 80% compression and rebound. It hits bumps and I hardly feel it. So far, I think it is worth it. I have dobs on my sequoia and love how it feels.

 

[bloc]

You also need panhard rod correction at that rear ride height.

 

[stellite]

You also need panhard rod correction at that rear ride height.

Yup, I ordered that yesterday

 

[MRego]

So, after installing the Dobinsons MRR lift and getting a solid 2.5 inch front and back, maybe more in back, I noticed a lot of side to side sway and float. Like a boat on a wave. I played with compression and rebound and reduced much of it. But it is still there. I have a panhard rod correction bracket on the way, which I know should help a lot. However, I am thinking that the sway bars are to small and I may need to increase their size. Has anyone that has lifted their truck done sway bars as well?

here is the truck

Exactly what I felt when installed the BP-51s in my previous LC. Looots of boat-like feelings. I did not play with the adjustments though. Just sold it because I hated and could not see meaningful benefit when comparing to stock suspension dialed by Toyota. I can't even imagine doing it to an LX with the added complexity of the AHC. The first thing I did NOT do in my new-to-me 2020 HE was to install a lift. Slapped the OEM spacers in front coils and called it a day. Granted the HE 2 row like mine are already significantly higher in the back, so the OEM spacer plus 285/65s gave me plenty additional clearance for what I need. Unless you are planning some serious crawling (which does not look like with such a nice truck), I would just take it off and use the AHC.

 

[stellite]

Exactly what I felt when installed the BP-51s in my previous LC. Looots of boat-like feelings. I did not play with the adjustments though. Just sold it because I hated and could not see meaningful benefit when comparing to stock suspension dialed by Toyota. I can't even imagine doing it to an LX with the added complexity of the AHC. The first thing I did NOT do in my new-to-me 2020 HE was to install a lift. Slapped the OEM spacers in front coils and called it a day. Granted the HE 2 row like mine are already significantly higher in the back, so the OEM spacer plus 285/65s gave me plenty additional clearance for what I need. Unless you are planning some serious crawling (which does not look like with such a nice truck), I would just take it off and use the AHC.

I am pretty sure, I can completely dial out the sway. I pretty much reduced it to acceptable level without the necessary panhard relocation kit, which is probably the majority of the problem. I think sway bars will just complete the build.

As for going back to AHC, first, I don't want to and second, the group that installed my lift, erroneously threw away my AHC system, even though I asked them to box it up and give it to me. Yes, they will be paying me something back for this.

 

[MRego]

As for going back to AHC, first, I don't want to and second, the group that installed my lift, erroneously threw away my AHC system, even though I asked them to box it up and give it to me. Yes, they will be paying me something back for this.

Ouch. Sorry about that. Good that they are compensating you.

 

[stellite]

Ouch. Sorry about that. Good that they are compensating you.

Well, we will see if they do. The boss was on the east coast for some overlanding symposium. So I expect a call from them this week.

 

[tbisaacs]

You can’t just put a Land Cruiser rear sway bar in from a KDSS truck. You’ll have to get a non-kdss version

https://partsouq.com/en/catalog/genuine/unit?c=TOYOTA00&ssd=%24%2AKwEANCUMAmd7UUseXE4uKFhMbGt1BAsGBxU6CUFHdGB8eHp5PCsHbUNHQ3JkfWwqNz0ACXh0fHcUdTkwMGF2Zktcc08UH0dDEGkWGRBQFgxZGAdHWlB1SRFXXw9HQwAfFlNbVxYMSVFBAgcWGRBaWhRRR00KAQIMBHYWSxUTEFZzTxdRUBYMS0dOCwIHAwIRGBZJDA0QCRQXYnJmdyZHVRIRWVYQCRQULDczAAMEeR90d3s5LlseExZDUREOFklQSwNkFhkSEVJfD0dDEgcDSAAAAAB_Qh11%24&vid=0&cid=2&uid=414187&q=

Should be significantly thicker than oem LX. I believe @cruiseroutfit can hook you up.

 

[tbisaacs]

Dobinsons has a 33mm non-kdss bar

Dobinsons Rear Sway Bar For Toyota Land Cruiser 200 Series (NON KDSS) (SB59-1929)

Suits 200 Series Land Cruiser (NON KDSS ONLY) Increased rate for better sway controll on loaded vehicles. Includes Sway Bar with replacement bushings -- Dobinsons Front Sway Bar Packages are the perfect addition to a 4WD.The resistance to the fitment of bigger front Sway Bars to 4WD vehicles is...

adventuremotorsusa.com

 

[TeCKis300]

I cannot compute.

MRR as a supposed upgrade. Only to throw on a static stiff sway bar that would reduce articulation and RTI well below stock.

 

[sedole]

I put a Nolathane 30mm LX rear sway bar in mine. Did not feel the need to add one to the front. Greatly improved driving feel and reduced floatiness. Still gets pretty flexy no problem.

 

[ton504]

Does the steering feel loose? I would lower the front slightly to get a little rake. Hows the alignment looking so far?

 

[stellite]

I put a Nolathane 30mm LX rear sway bar in mine. Did not feel the need to add one to the front. Greatly improved driving feel and reduced floatiness. Still gets pretty flexy no problem.

That would likely work, as the sway seems to be coming from the rear like a wave.

Does the steering feel loose? I would lower the front slightly to get a little rake. Hows the alignment looking so far?

No, steering is tight and the rake is really good as is on level ground. My driveway slopes

 

[stellite]

I cannot compute.

MRR as a supposed upgrade. Only to throw on a static stiff sway bar that would reduce articulation and RTI well below stock.

This MRR is way more flexible than stock. When the AHC is at lift, it is much stiffer and much less willing to articulate up and down than this MRR. I doubt that going slightly stiffer in rear will make a difference. Like I said, I will be installing the panhard rod correction bracket to return it to horizontal. This will likely fix most of the sway.

 

[sedole]

I should also specify though that I am running fairly extended end links for the rear sway bar so it clears my bilstein shock reservoirs. It's a notable bump up from the stock LX bar for sure, but likely not nearly as stiff as it would or could be with stock length links.

 

[stellite]

I should also specify though that I am running fairly extended end links for the rear sway bar so it clears my bilstein shock reservoirs. It's a notable bump up from the stock LX bar for sure, but likely not nearly as stiff as it would or could be with stock length links.

Whoakes the extended links

 

[sedole]

I welded up my own, but I've heard of others using the superpro extended rear links for a 100 series. Those would not have been long enough to clear in my situation but should be plenty for people not running the bilstein 5160 rear shocks. My links are a bit too long to be ideal. Still trying to work out a solution, but it does fine for now. You can just barely see where the bar contacts the reservoir in this pic (only under heavy articulation). Shocks with the reservoir in a different location don't need the extension.

 

[stellite]

Ok, did 33mm rear sway bar and kdss panhard correction bracket. Sway is completely dialed out. Feels like its on rails now.