I have a 4" terraflex and I get a drift to the right a bit once it a while. It does not happen all of the time. I had it aligned twice.

It would pull right every time I let go of the wheel until I crawled under it with a torque wrench and tightened everything down. After that it was hardly noticeable and was caused by the road more than anything. I would re-torque everything just to be safe.

 

OK

1. I went ahead and I measured axel to axel left and right...no difference.
2. I checked the tire pressure and all 4 wheel read 31PSI (I know, too high) I'm gonna drop the pressure down to 28PSI.
3. I measured the four control arms up front and no difference left and right.
4. Upon inspection no damage found and nothing loose.
5. My drag link and trackbar are parallel.
6. The only thing left to do is check the torque on everything, but I don't have a torque wrench at the moment, but I doubt that this is the problem because we checked everything 2-3 times during installation.

JK goes left when letting go of steering wheel

What next?

 

I had the alignment checked again. Here are the results:

Caster: 6.7L 6.6R
Camber: -0.6L -0.8R
Toe: 0.11L 0.11R

I was told that the camber is a bit off but nothing looks like it's bent or damaged.
I have decided to lengthen the drivers front lower CA a 1/8".

Any other suggestion is welcome.

 

Only other suggestions I can offer is to rotate the tires.. Or throw your stockers back on, if you still have them, and see if that cures the problem.

Beyond that, I would just try to experiment and keep a log of each change as you go. It's a pain I know, but there is no obvious answer here. Maybe lighten up the castor setting on the right side. It looks like your castor angle is getting near the upper end of the range. Instead of going for more castor angle by lengthening the lower left, I would try shortening the other side an 1/8". Keep in mind, you are not going to be able to make any appreciable changes between sides with this method because, after all it is a solid axle.

Good luck, and keep us posted.

 

camber pulls to the more positive side, caster pulls to the more negative side. also, camber pulls roughly twice as hard as caster. so yea, you would have a slight left pull. did the new tires get installed at the same time as the lift?? if so, you could have a tire with a slight radial pull. try crossing the front tires. if it still pulls to the left, lengthen the left front lower control arm one turn or so. that should give you a bit more positive caster on the left, and hopefully pull it slightly right. good luck man.

 

Hmm You have a point. Tomorrow I'll go to a tire shop and get my wheels rotated and If not, then I might consider adjusting the control arms or...(next quote)

...will have a look at the axel housing at the dealer to see if it needs replacing since my camber might be the culprit. Yes, I did have the new tires, wheels and lift installed at the same time which is the same reason I'm going to have my tires crossed first.

If I have to adjust the control arms I might first try to shorten the passenger side LCA since the caster on the drivers side is greater by 0.1 vs the passenger side and don't think its a good idea to increase the discrepancy between the two as it relates to caster.

Summary:

1. Cross front tires
2. If that doesn't work check axel housing, ball joints ect at dealer
3. If all else fails adjust front lower control arms

Hopefully I'll have some news for you guys tomorrow after crossing the tires.

Thanks guys for your valuable input

 

Had the front tires crossed and guess what...IT STILL PULLS TO THE LEFT

Could it be that I have a bent axel c that has my camber out of wack. I don't think that I have wheeled hard enough to do such a thing.

Now if I shorten the passenger front LCA or lengthen the driver front LCA will I be compensating for something? I ask because if I do either of two there will be atleast a difference of .2 degrees in caster between right and left. I don't think that is good.

Opinions?

 

Today I was told to try a road force wheel balancing. This kind of wheel balancing checks the pull in each wheel and tell the operator where to put the wheels at so the vehicle will track straight.

Check this link out: http://www.gsp9700.com/

Now I have to see if someone here in PR uses this machine

 

Since my last post on this thread I have done nothing yet to resolve this problem, but I'm noticing that my left drift is less than before. Its either that or I'm getting used to it LOL. Only time will tell. I still plan on lengthening my drivers side LCA. I'll post update ASAP.

 

UPDATE:

New measurements of my front lower control arms:

23.75" passenger
24.00" driver

Caster: 7.1 driver 7.2 passenger

It turns out that my left drift is my passenger side camber(-0.98) I just ordered a off set ball joint. Lets see how things work out. With the new caster I'm not 100% happy the way its handling. Its feels a little loose when the road has some dips in it and tight turns. I don't feel as confident as before. It might be just me. I think we need to verify the toe again. Its that or my Fox SS needs to be tuned again.(Yes, I dumped the RC dual SS for the Fox SS) I'll probably have to go back to the stock SS and get the handling right like I had originally planned then go back to the Fox.

Any Suggestions?