Parts Sourcing for Front Suspension Rebuild

Like I told you get under the car and see how you can move the arm at the pin front to back. Or just do the drive to reverse check with a helper. You'll see the problem.

When a OEM bushing tears this is what it does that makes the car wonder on uneven roads. Now not only are you letting it move you promote it with lube. This changes the alignment when they move.

It only gets worse with the swivel on the front of the adjustable struts.

My car failed from using double flat upper bolts that came from the same Vender that sold the kit. The bolts are weaker then the single flat OEM style. They do not take the same torque before they fail. The alignment shop tightened them. I didn't think they were that weak. The thread pulled right off.

I never saw a pin fail in the 40+ years of working on these cars unless the K-member failed from the pre 70 cars with use of heavy bars and a stabilizer without the braced K-member from 70 up. One of the reasons I posted these pictures.
The only movement on the pin has a sleeve on it that you leave in place to install the poly bushings. So before the pin wears it has to wear through the sleeve

If you look close at the picture of the k-member I cut apart you can see the factory welded brace on the outside. And having cut these apart I know what they look like on the inside also. I wonder why they did that? Seams you would have the answer for that? You seam to have the answers why your two cars are the base for your expert knowledge.

I am only trying to enlighten you on the facts. Not assumptions . If the Vender's selling these parts would admit to their poor engineering . The bottom would drop out of their sales. And think of the liability they would face. But I forgot their could be no liability from Chinese made parts.

You need to sit down and think why they encased the OEM bushings. It was not to stop them from moving side to side. It was to stop it from moving front to back. And they didn't secure the torsion to hold the arm front for a reason. Wonder why? You should have the answer for that.

View attachment 1715388732

I see you responded with your usual load of horse puckey, glad I missed it the first time around. Same made up "facts", same fundamental misunderstanding of how the suspension on these cars actually works.

I've don't need to "go under my car" to confirm that you're wrong, I've been under my car because I installed all of those parts. The LCA's do not slide backward on the pins. This is because my strut rods are the correct length, and the strut rods are what locate the LCA. That's how it works.

When an OEM bushing tears, the pivot pin flops around radially inside the LCA shell. That's why the car wanders, because the LCA is now moving all over the place. That is not at all what happens with a poly bushing. Properly installed, the LCA pivot is tight in the poly bushing which is tight in the outer bushing shell, so there's no radial slop like with a torn rubber bushing. If the poly bushing has been installed with proper length strut rods, it doesn't slide back either. So you get none of the problems of a failed rubber bushing, that's just not how it works.

I do my own alignments, they have always held. I check the entire travel of my suspension for binding, irregular movement, etc when I install new parts and when I set my alignment. None of the made up BS you're always crowing about has ever been a problem on my car. That's because I understand that poly LCA bushings are not the same as rubber bushings. Which is why I install greaseable pins and adjustable strut rods. Poly bushings have less give, so, the suspension geometry must be more accurate to work properly. No hiding behind big rubber factory bushings to make up for loose tolerances, the strut rods have to be the right length to keep the LCA from binding or moving backward. And unlike the rubber bushings, with poly bushings you have two surfaces sliding on each other. That requires lubrication. The OEM bushings are just getting away with using the flex in the rubber.

Your camber adjusting bolt failed because the flat wasn't cut far enough down the shaft of the bolt, it's right in the picture. The threads stripped because the washer bottomed out before it was snug against the UCA mount. The bolt didn't fail because it was weak, the bolt failed because the alignment shop over-torqued the nut. The washer held up short of the mount, the bolt wasn't holding the end of the UCA in place, and in an attempt to fix the issue they torqued the living daylights out of it. Clearly the bolt wasn't machined properly. But if anyone bothered to compare the new bolt to the old bolt they'd see the problem. And, why are you blaming it on the alignment shop? I thought you knew all about this stuff. The UCA wandering around in the mount should have been very obvious. The kind of obvious you fix before you hit the drag strip. Improper installation, improper maintenance- just like I said before.

Finally, they didn't "encase" the OEM bushings. The OEM LCA bushing is not what keeps the LCA from sliding off the pin. The strut rod does that. It limits the backward travel of the LCA. If it didn't, the rubber in the OEM bushing would tear and the LCA would fall off the pin. I've seen that with old failed rubber bushings. Pull the torsion bar and loosen the strut rod and the LCA falls right off of the back- pin still in the K, inner shell on the pin, LCA on the floor. The bushings were never intended to keep the LCA on the pin, that's not why they're there. The strut rod does that, and just in case, the torsion bar is the backstop. You think the rubber keeps the LCA in place? You can't even torque the LCA unless it's at ride height or the bushings tear. Clearly the rubber doesn't keep the LCA on the pin.

pzv5j7l.jpg

And believe me the poly lower arm bushings do not hold the arm in place securely. As easy as you slip it in .It will slip out. I had upper poly bushing they were fine. Not the lowers or the struts. Waste of your money. Every car that comes here with them on. I pull the front of the strut rod bushing off for the customer it is easy with a short air gun. While they are standing here. Once they see that bushing is gone where it fits through the K-member.and how you can pry the lower arm off of the control arm pin. I get a job replacing the bushings. worked out great for me. that is how I made money replacing junk parts.

This is hilarious. So, you scam people into buying new bushings because, like you, they don't understand that the strut rods and torsion bars are what actually hold the LCA's in place when the car is going down the road. "Hey look, if I remove everything that holds the LCA onto the car the LCA falls off". No kidding, really?! :realcrazy:

That's like telling a guy he needs new brake pads because they fell out of the caliper when you pulled the caliper off the rotor. "Wow this is serious, you don't want the pads falling off the car!" When you pulled the caliper you pulled everything holding the pads in place. Properly installed it can't happen. Same exact deal for the LCA. Disassemble half the suspension and the LCA comes off. Yeah, that's how that works, you took everything holding it in place off the car, so it comes off the car.

Sounds like PST got their **** together then. And the recommendation of factory style bushing on pa. roads is a good thing. At least they are honest. Good to know. Tightening parts at ride height should also be added to instructions if its not there. Moog parts are a big plus.

"Quality" Moog parts
Moog LCA Bushings

Moog LCA bushings

LCA bushings shot

Lca bushing help.

I need to do a follow-up here. When I put the front end together, I used the cheapest poly set I could find. These were the sort where all of the existing shells had to be re-used. Later I was able to get the front end set for the max positive caster I could get out of it. What I have less than 30 days afterwards is a popping noise and a wheel with too much negative camber. The poly bushings I installed about 10 years ago are disintegrating. They were okay for shuffling the car around with an eye-ball alignment. Not okay for a well tuned set-up, IMO. If someone were to offer me a set of Energy Suspension bushings, particularly a set that had to be built up using existing shells, I would say. "No thank you." I have used PST before with good results, new ones are on the way.

That's the same exact brand that has done tens of thousands of miles on my cars. When I switched my Duster over to Delrin LCA bushings the $9 energy suspension LCA bushings looked brand new still, that particular set had at least 10k on them. I think the set on my Challenger has more than double that on them. Heck the red poly energy suspension "C" bushings on my old F100 have been there more than ten years, I've had the truck over 11 years and they were there when I bought it.

Curious, were you using them with adjustable strut rods and greaseable LCA pins? Poly bushings need to be lubricated, they are not like the OEM rubber bushings. Different material, and a different design. If poly bushings are not properly lubricated they will wear out, the pins rotate in the bushing. If the bushing dries out, that friction will kill the bushing. They also have to fit tightly in the shells. That's actually the biggest drawback of the bare poly bushings, they depend on the factory tolerances of the original bushing shells. If they don't fit tightly, they won't work properly. That's why the new proforged poly bushings come with their own shells.

Regardless, the last set of Moog bushings didn't last 5 years. And that was before they changed the manufacturing on them, now it's hit and miss if the inner shells even fit the pins. The links I posted above show all the issues Moog is having now. Rubber bushings are no guarantee.