odd rumbling after camber alignment

[Tercel__jon]

So, Got I my new bearing on and everything was smooth. Drove around for a week and found a bumper I like. Built the bumper, and mounted it. Had to do some welding with it attached to the car but batt was disconnected. Everything was fine and dandy except my camber was WAY off on both axles due to decreased weight I assume. (old bumper weighed a good amount) So I fixed it, and then adjusted the tierods to where the steering wheel was straight and the car tracked straight as well. Well, now I have a rumble...The bearing is new and torqued to spec.

Rumbling sound and jostling of the steering wheel happens under throttle in 4th and 5th gear only, around and above 50mph (might be 55 I do have larger tires than stock) when turning the wheel to the left. If the steering wheel is a clock, Id say rumbling starts around 11:58 and continues to 11:50ish where if I turn sharper at those speeds I might flip. But turning lock to lock in circles in the parking lot, there isnt any rumbling.

I do have the bartos lift but i havent lowered the crossmember to compensate for the increased cv angles. Is that whats going on here? Its the only thing I can think of. Because I had pretty bad positive camber before I adjusted it and there wasnt any noise. Its either this, or when I welded the bumper, the cv axle beearings zapped itself due to bad grounding and now has a bad spot?

[rer233]

sounds like the overall toe is off. should be slightly toed out as i recall. think there are threads here on cheching toe.

[dlb]

sounds like the overall toe is off. should be slightly toed out as i recall. think there are threads here on cheching toe.

https://tercel4wd.com/forums/viewtopic.php?f=7&t=2273

i would check the toe using the method in that link. if that checks out and you have a spare passenger side CV, i would try swapping that out. i don't think the stock crossmember height is causing the rumbling since other guys (littlered4wd in particular, i believe) have run it that way without issues.

also, if your ride height has increased dramatically over stock, it would be a good idea to loosen the lower control arm-to-frame bolts to readjust their resting position by torquing them up when the vehicle is sitting on all fours. IIRC the lower control arm bushings have teeth that dig in to the frame when you tighten that bolt so if they are still set to stock height, they would be straining at rest and slowly eat through the frame. this happened to xirdneh, take a look at the pics of the damage and his repair here.

https://tercel4wd.com/forums/viewtopic.php?f=7&t=8459&p=61035

i think it gets mentioned in that thread that all suspension bushings should be tightened at ride height, so the same goes for the anti sway bar nuts and bolts, too. i don't think this is causing your rumbling but it would be a good idea as preventative maintenance.

[Petros]

sounds to me like it is the CV joints that have even more angle on them than before. Best also check your alignment, not sure what you did exactly but it does not sound like the correct thing to do, the angle of the control arm or tie rod is NOT a measure of correct alignment.

Get the angle on CV joint reduced and than have the alignment checked properly if you do not know how to do it.

[Tercel__jon]

I know how to do an alignment. haha. Ive done it before on the wagon and it turned out better than the shop I took it to.

I know all about the eaten frame from the lower control arm bushings issue. Been there, fixed that. But thanks for the Idea on loosening them back up and re-tightening. Ill do that in a minute. Sway bar is tight.

Also an update, after driving a little over 150 miles its starting to do the same thrump (or dull clunk) noise turning right at lower speeds. Guess it is time for CVs. And also a spacer to lower the crossmember.

[Tercel__jon]

DEFINITELY time for CVs. Put the front end on jack stands, and started her up. Horrible noises from the passenger side. Could also see grease being slung. The passenger side is the oldest. I think I might also remove a shim or so from the front lift. Now that I have a newer lighter bumper I dont need as many as I had...which was the same amount that bartos had.

[Petros]

lets see a picture of that bumper!

[dlb]

lets see a picture of that bumper!

ditto!

[Tercel__jon]

Well alright, If you guys really want to. Its still not 100% dont yet so dont critique it too hard.



Here it is at its current state. its about 85% done. Need to get some filler material between the bumper and the lights, have some angle Ill use. I also need to cut the excess off the uprights down at the bottom and shape it. You can see the middle support missing for the upright. Well, thats for a little something I borrowed from the german sales brochure.