Rubbing after new UCAs

Good evening all! I have a problem hoping someone can help me out, I have a 2019 tundra crewmax sr5... currently on Bilstein6112's lift at 1.9 setting. Have 5160's in rear with 1inch BDS Shackle sitting on fuel vectors 18x9 in a +20mm offset wrapped in 295/70r18 Falken at3w's, Have carrier bearing drop and diff drop along with trd skid plate and readylift spacer kit. Now I just installed Camburg balljoint uca's and im having a hell of a time aligning it!!! These things come with positive caster built in and its making me rub my body mount? I didnt rub with stock ucas at 2+ caster and Currently at 6.6caster? Anyone have any input please help? Thank

 

Good evening all! I have a problem hoping someone can help me out, I have a 2019 tundra crewmax sr5... currently on Bilstein6112's lift at 1.9 setting. Have 5160's in rear with 1inch BDS Shackle sitting on fuel vectors 18x9 in a +20mm offset wrapped in 295/70r18 Falken at3w's, Have carrier bearing drop and diff drop along with trd skid plate and readylift spacer kit. Now I just installed Camburg balljoint uca's and im having a hell of a time aligning it!!! These things come with positive caster built in and its making me rub my body mount? I didnt rub with stock ucas at 2+ caster and Currently at 6.6caster? Anyone have any input please help? Thank

 

The Camburgs are setting you're tire WAY farther towards the back of the truck (Looks like almost a 1" difference on the top control arm to me - so pretty aggressive - that is why they have so much Caster). It works with stock tires, but apparently not your setup. Sounds like you will have to maybe do a body mount chop?

Btw, what do you mean you are having trouble aligning - are you talking about an actual alignment shop having trouble, or do you mean just getting the wheel not to hit? The Camburgs are going to run in that 6-Caster range - they will not align within factory Toyota specs, they are designed for high-caster desert racing etc.

 

Alignment is pulling right drives true when i hold steering wheel but as soon as i let go it pulls... the rubbing is confusing how stockers had no rub and these do??

 

It's not confusing, the tire is pushed toward the rear of the Tundra now - that is what Caster is; think of a Chopper motorcycle - that is Caster. Are you're alignment Caster numbers the same on both sides, or different? They need to be offset to compensate for road crown.

 

Yes that i understand but doesnt the uca add positive caster? Meaning moving the wheel forward like on a chopper?

 

Same both sides 6.6caster

 

Positive is pushing the wheel back into the body mount.

 

That could explain the pull, usually you need less Caster on the left wheel to compensate for the road crown. Does it pull to the right then? If so that is the road crown pushing your truck off the road. You would want like 6.1 Caster on the left wheel to match the 6.6 on right.

 

Do you have your alignment sheet. Those tires should not rub the body mount with that much caster. Is it possible that you are rubbing the bumper plastic? Positive caster will not move the wheel back. That is the basis of running higher caster numbers to avoid BMC.

 

Positive moves away from cab mount

 

So i what i need is more negative caster correct, to move the wheel further out from the body towards the bumper?

 

No

 

With that much caster I bet you are rubbing bumper plastic.

 

Camburg naturally add a few more degrees than stock and a little more than everyone else

 

Ok so i was on the right track, im postive 6.6 and still Rub the body mount if i rubbed plastic id shave it or would remove the flap completely

 

It all depends. If you are only driving in and out of the driveway it might not do anything other than move the plastic around for a while. Take the truck out and when you hear rubbing get out and look at it. If you still have the front mud flaps that would be the first place I would look for rubbing. I had to remove all of the bumper plastic with my setup (2.5 inch lift, 35x12.5 tires on 17x8.5 +25 wheels) with only 4 degrees of caster.

 

I know where im rubbing because i see it on the body mount, its literally buffing the paint off, like i said if it was plastic i wouldnt have a problem id simply trim or remove it but since i know what's rubbing im asking for advice and with that much positive caster i should be rubbing the front not the back, and as i explained with stock uca's i didnt rub the mount at all so with these positive built in ucas i should be free of rub in the back which doesn't make sense to me?

 

I would ask the alignment shop to double check the alignment. The other thing you could do is see if they could bring it back to around 4 degrees, but shouldn’t be the problem. I would love to get 6 degrees positive caster. What are the circumstances that you are rubbing?

 

IMO, being I have a similar problem at times, is the LACK of lift height and the INCREASE in caster.

The added caster from Camburg is only good 3+, not under 3.

Caster is good and bad, depends on how you get it.

Camburg is great 3+, hinders #s under 3 for sure.

 

Such a pain in the ass with this friggin thing, I was really trying to avoid the BMC so i went with aftermarket UCA's for full performance on the suspension but if i dont chop i rub if i add more caster then they have a problem with the camber! i emailed Camburg with all the specs ill see what they recommend thanks

 

Actually, no, it doesn't... you literally re-posted the Caster diagram?! Positive pushes the wheel towards the back of the Tundra - right into the body mount...

 

You want LESS caster... i.e. the reason it didn't rub with your stock UCA's is because you had less positive caster, correct?!

Just chop the body mount, it would be a great upgrade for the future too if you ever want larger tires. I'd just cut it myself and then if you don't weld - hire one of those mobil welder guys to weld the plate on.

 

I agree with what you are saying too, but even over 3" you can run 6.5 Positive Caster with Camburgs... They are very high caster.

 

This is incorrect

 

For the last time - positive caster means your wheel is set toward the back, or bed of your Tundra - I have absolutely no idea where you guys are getting the idea that positive is pushing the wheel forward! WTF haha.

 

Thats what i was trying to figure out!!! How am i getting rub with a higher caster uca if the stock had less and didnt rub...??? Following Camburgs alignment install! thought i was nuts for a sec there

 

I am starting to feel like I am being punk'd here... Jesus christ.

 

FFS!