1.75" Dobinson's lift / steering feels vague

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.

crikeymike said:
Yep, need some caster correction.

exitoffroad.com

Dobinsons Rubber 2.5° Caster Bushing Kit for Land Cruiser

Dobinsons RB59-522K Rubber Caster Bushing Kit corrects the front caster angle when you lift your Land Cruiser 80 Series anywhere from 0-3"
exitoffroad.com exitoffroad.com
or
exitoffroad.com

Dobinsons PB59-503K Adj Front Poly Caster Bushing Kit Land Cruiser

This PB59-503K Adjustable Front Radius Arm Caster Bushing Kit is designed for the 1990-97 Landcruiser 80 Series Wagon 105 Series
exitoffroad.com exitoffroad.com

I'd go for rubber at that height.

Edit: Also, old worn out stock springs would be lower than stock which would have even more caster (heavier steering), so the difference from that up to the new height would feel quite different without correcting the caster for the lift.
Click to expand...
That's why I recommended this last week.

Tires don't change you suspension's lift height or caster.
 
For better input on this thread, post up your current alignment readings along with the measured ride height from the center of the wheel hub to the bottom of the fender in inches. IIRC stock is roughly 20.5" so you can subtract that from your reading to determine how much lift you have. Tire size has nothing to do with caster measurement or correction. It's basically just a guess until you know the real numbers.
 
77mustard40 said:
For better input on this thread, post up your current alignment readings along with the measured ride height from the center of the wheel hub to the bottom of the fender in inches. IIRC stock is roughly 20.5" so you can subtract that from your reading to determine how much lift you have. Tire size has nothing to do with caster measurement or correction. It's basically just a guess until you know the real numbers.
Click to expand...
ok, will do, thank you
 
frawstme said:
Everyone says to increase caster, what degree of caster are you shooting for with that lift? I'm running the exact same setup and I could still up my caster some if needed. When I'm on the highway if I have to make a fast motion things do feel a little sketchy. At the same time though I think if I increas caster any more that my wheels might rub

View attachment 4127699


edit:
just realized I'm on the 80 series forum, ignore me 😭
Click to expand...
Believe you should be shooting for between 2-4 degrees of caster.
 
Bushings are a budget fix but they are affective. The ones @crikeymike are options

BUT

Without knowing your current caster noone can give you a definitive options. Once you know the numbers, people with more knowledge can chime in and direct you to what would work and at what you budget will allow.
 
SoCalFJ803FE said:
Asking Toyota how much caster is now. On a side note I wrote to Dobinson's and they say plates is too much for a 1.75" lift, the recommend the rubber bushings not the plates, however in a Cruiser meet up on Saturday everybody voted for the plates....
Click to expand...
Their plates are too much correction.
 
not all plates are the same, landtank is the only low lift plate i know of. I've installed a set and it's a great product. most other plates are for 4"+
 
Ok, I got it!! attached are the numbers, cross caster at Front is 0.4

1777504021325.webp
 
SoCalFJ803FE said:
Ok, I got it!! attached are the numbers, cross caster at Front is 0.4

View attachment 4131770
Click to expand...
we're not as worried about the cross castor, thats the difference from one side to another, lower is always better here. just need to bump that castor up about 3ish degrees.
 
Buy once and cry once....
My 97 came with under 3" lift and had the caster correction bushings on the rad arms....and it drove sketchy at high speeds. Had it measured at an alignment shop and was negative zero degrees. Pulleded the rad arms off and found the caster correction bushings had rotated causing the caster measurements to be off. PO said the correction bushings were installed under 10k miles ago.
Bought the Delta 3 regulars and it fixed the issue. My current casters are now within 3-4 degrees.
Besides Delta, Trail Taylor sells radius arms as well.

With caster corrections bushings
Screenshot_20260430-053603(1).webp


With Delta 3 arms
Screenshot_20260430-053748(1).webp
 
Last edited:
efjayatee said:
Buy once and cry once....
My 97 came with under 3" lift and had the caster correction bushings on the rad arms....and it drove sketchy at high speeds. Had it measured at an alignment shop and was negative zero degrees. Pulleded the rad arms off and found the caster correction bushings had rotated causing the caster measurements to be off. PO said the correction bushings were installed under 10k miles ago.
Bought the Delta 3 regulars and it fixed the issue. My current casters are now within 3-4 degrees.
Besides Delta, Trail Taylor sells radius arms as well.

With caster corrections bushings
View attachment 4132067

With Delta 3 arms
View attachment 4132066
Click to expand...
This is great info... what is the exact Delta arm you installed, they have a couple of options..
Thank you.
 
If you are dead set on the Delta arms (Delta Vehicle Systems - FJ/FZJ80/LX450 Caster Correcting Front Radius Arms - https://www.deltavs.com/all-products/fj-fzj80-lx450-high-clearance-caster-correcting-front-radius-arms) follwo the instructions to determine the arm you need.

This is from the site and explains the process for selecting the arms:
0. INSTALL LIFT

1. Get rig set up as it will be driven 95% of the time, weight/load-wise (with NO caster correction installed)​

2. Get caster checked at tire shop​

3. Compare caster numbers with the diagram in the gallery above (if you need any assistance at all with the math, happy to help with that)​

4. Choose which arms you want based on results from step 3 (OEM caster is +3*, +- 1* , or in other words, a +2* to +4* window)​

5. Enjoy​


I would also suggest, as others have that you look at the offerings from @landtank (post#32) and eimkeith (post#29) as they also offer good option and may just be a better fit for the castor correction you needs as well as lighter on the initial cost.
 
SoCalFJ803FE said:
This is great info... what is the exact Delta arm you installed, they have a couple of options..
Thank you.
Click to expand...
Your 1.75" is more likely like a 2.25. I had that same 1.75 dobinson lift on my 94 and I had the Delta 3 regular radius arms with 315s.

I now have 4" lift and installed the Delta 3L radius arms which pushes the front axles more forward so 37s can clear.
 
efjayatee said:
Your 1.75" is more likely like a 2.25. I had that same 1.75 dobinson lift on my 94 and I had the Delta 3 regular radius arms with 315s.

I now have 4" lift and installed the Delta 3L radius arms which pushes the front axles more forward so 37s can clear.
Click to expand...
Delta 3 base gives you +5.3 to base caster... I was thinking Delta 2 base to get +3.5, range needs to be 2-4 and I am 0.2 now...

1777591057701.webp
 
efjayatee said:
Your 1.75" is more likely like a 2.25. I had that same 1.75 dobinson lift on my 94 and I had the Delta 3 regular radius arms with 315s.

I now have 4" lift and installed the Delta 3L radius arms which pushes the front axles more forward so 37s can clear.
Click to expand...
good point I'm at 2" with mine after settling, diesel engine, winch and bumper. running delta 3 arms haven't measured castor yet but it's probably a little high. drives great.
 
TheBussman said:
good point I'm at 2" with mine after settling, diesel engine, winch and bumper. running delta 3 arms haven't measured castor yet but it's probably a little high. drives great.
Click to expand...
with Delta 3 Base it will be at 5.3 caster correction, OEM is 4, so it will be 1.3 over, is that too much to be concerned? I wouldn't mind the extra stability if the truck doesn't start bringing other things with extra +1.3 caster....
 
You must log in or register to reply here.

Share this page

Back
Top Bottom