Need caster correction!

[Walking Eagle]

While this might help you better manage the wandering and such it doesn't address the underlying problem which is that your caster is way out of wack. You might seriously look into the drop brackets that MAF is now offering to work with those arms to get everything back in alignment.

Though it does point out that making sure the rest of the suspension / steering is in good shape before lifting is important as any short comings will be amplified.

At 7.5-8", if you correct enough for caster, I'm guessing the pinion angle is going to suck, and you're going to start cutting and turning axles.

 

[Jason Andrews]

Quote:
Originally Posted by landtank
While this might help you better manage the wandering and such it doesn't address the underlying problem which is that your caster is way out of wack. You might seriously look into the drop brackets that MAF is now offering to work with those arms to get everything back in alignment.


No...the wandering is the caster. Since I took out the 20mm of packers from the fromt,... I tried to cheat and get an extra inch. My caster is still at about 1* and should be between 2* and 4* stock. It rides good! The shimmy, death wobble, = tie rod ends was the real problem, and that only multiplied the caster issue. btw...I would never buy parts from MAF!! I won't go into that for their sake.

 

[Jason Andrews]

Quote:
Originally Posted by landtank
While this might help you better manage the wandering and such it doesn't address the underlying problem which is that your caster is way out of wack. You might seriously look into the drop brackets that MAF is now offering to work with those arms to get everything back in alignment.


No...the wandering is the caster. Since I took out the 20mm of packers from the fromt,... I tried to cheat and get an extra inch. My caster is still at about 1* and should be between 2* and 4* stock. It rides good! The shimmy, death wobble, = tie rod ends was the real problem, and that only multiplied the caster issue. btw...I would never buy parts from MAF!! I won't go into that for their sake.

pinion angle?? of what the front drive shaft? it was fine and so was the steering angle at that height. there is just no way short of custom fab to correct for that deg of ride height. cutting and turning axles?? what?

 

[landtank]

At 7.5-8", if you correct enough for caster, I'm guessing the pinion angle is going to suck, and you're going to start cutting and turning axles.

You lost me.

 

[Waggoner5]

How does this help Jason?

Excuse me. I was only offering up a similar truck with no issues to varify that he has more problems than caster angle.
Gary

 

[landtank]

Excuse me. I was only offering up a similar truck with no issues to varify that he has more problems than caster angle.
Gary

I didn't get that from your post, all I saw was a post that pointed to a truck and said it was fine.

Sorry.

 

[Walking Eagle]

You lost me.

Like with spring overs on 60 series. If mount the spring pads so the pinion points up toward the transfercase, the caster is wrong. If you mount the spring pads so the caster is correct the pinion is not pointed toward the transfercase - and you run into driveshaft joint angles. If you cut the housing, you can then rotate the knuckes relative to the pinion. Don't know what the critical point is with 80's as far as how far you can lift it before the driveshafts, even CV driveshafts won't work. Lots of people seem to be running 6" with out issue. The point of problems may be 7.5-8", might be 12" - I don't know. I just know the 60 guys have to do it with the bigger SPO lifts, and since the caster vs. pinion angle is going to react the same on a leaf spring lift vs. a coil spring lift, I assume eventually someone is going to run into the issue.

 

[Tools R Us]

The cut and turn is the best option area, is at 8"+ on the 80.

 

[cruiserdan]

How about flipping the stock arms?

 

[concretejungle]

Dan the man. I concur.

 

[alia176]

If you flip the arms, then won't you hit the frame at extreme stuffage?

 

[Tools R Us]

How about flipping the stock arms?

I haven't heard of anyone in the USA doing it, but would like to try. Flipping them would put the arms back closer to the stock angle improving handling, ride and the caster could be set where it's needed. But would not address the u-joint angle, cut and turn will still be needed. When the lift is that high if you rotate the axle to get a good caster angle the pinion points under the transfer possibly causing increased wear and vibration on the CV shaft.

Probably the best way to do it is, setup the arms on top with a zero degree pinion angle, ignoring caster and weld everything up, drive it a bit to settle the suspension. Take it to the alignment shop, get the caster number, then cut the trunion balls loose and turn them to get the needed caster.

The swaybar is questionable, don't know if it could be fitted between the high arms and the driveshaft?

 

[landtank]

Thanks guys, this cut and turn doesn't seem all to DD freindly. I'll stick with my 4", it did after all give me 2 great children.

 

[Tools R Us]

Cut and turn is a long time, well proven Toyota mod, tons of them running around as daily drivers. It takes some work, but it's the cleanest way to deal with driveline and caster angles.

http://www.ih8mud.com/tech/soa/5.html

http://www.cruiseroutfitters.com/customfab.html

 

[Walking Eagle]

If you flip the arms, then won't you hit the frame at extreme stuffage?

If you're at 8", you're probably runnging tires big enough that the bump stops will need to be low enough to prevent this. I'm guessing that's why the rummor is that 6" is about the minimum for flipping arms, but you'd have to find someone down under to confirm.

 

[fj803fe]

Cut and turn is a long time, well proven Toyota mod, tons of them running around as daily drivers. It takes some work, but it's the cleanest way to deal with driveline and caster angles.

http://www.ih8mud.com/tech/soa/5.html

http://www.cruiseroutfitters.com/customfab.html

Absolutely, better than the caster options IMO, albeit a more permanent solution. I would venture the current caster correction options are not as proven as cut/turn, given the time the cut/turn has been around. In fact, I think this may be the way I go on mine...I am also itching to get at the control arm flip .

 

[landtank]

I can see the need for cut and turn at some point, but I acheived ideal results with my caster plates at a 4" lift height. They where more predictable and easier to install also. I'd have to see the numbers but they might work just as well for lifts up to 6". What area do you think needs to be proven on them?

 

[Tools R Us]

I can see the need for cut and turn at some point, but I acheived ideal results with my caster plates at a 4" lift height. They where more predictable and easier to install also. I'd have to see the numbers but they might work just as well for lifts up to 6". What area do you think needs to be proven on them?

Yes, bushings, plates, arms are good bandaids up to the 7" lift range, then the combination of proper driveline and caster angles become incompatible, possibly requiring other options.

 

[Rookie2]

I'll stick with my 4", it did after all give me 2 great children.

What is this??? Did Rick tell a joke? He must of gotten laid last night .