Street/Mostly Strip Front Suspension

72bluNblu said
You're right, let's break this down into facts-

OMM- Has never installed a poly bushing that hasn't failed in a short period of time, according to him. That includes multiple brands of bushings, different applications, and even different vehicles if you read his responses.

72blu- Has never installed a poly bushing that has failed, in some cases that includes over a decade of use and tens of thousands of miles. That also includes multiple brands of bushings, different bushing applications, and vehicles.

If you eliminate the brand of the poly bushing, the application, the use, and even the vehicle they're installed in, you've eliminated every commonality between all of those poly bushings except for one. The guy that installed them. That's the only thing in common between all of the failed poly bushings that OMM has installed. All of them failed, and all of them were installed by the same guy. Literally nothing else is the same, and that's according to him.

I've never had a poly bushing fail. I'm not saying in the history of poly bushings that a bad one has never been made, but none of the ones I've installed has ever failed. Heck so far none of them have even worn out, although I'm sure they will eventually. I've used them on classic cars, I've used them on modern cars, I've used them on 4wd trucks. I've used poly LCA bushings, poly sway bar bushings, poly radius arm bushings, poly cab and body mounts, etc. Some of those bushings have been on my vehicles for over a decade.

Yes, there are applications where I wouldn't use a poly bushing, like on the strut rods of these cars for the reasons I explained earlier. If you understand how the bushing is supposed to function, and you understand how the material works in that application, you can intelligently decide what materials will improve performance in that application and which ones won't. If you don't understand that, you're just slapping parts together and hoping things work.

Clearly, I'm not the only person here that has successfully installed a poly bushing. And I know that they won't last forever and they're not right for every application, but the same is true of rubber bushings.

They are failed as soon as you install them.

Once a OEM lower is ripped off of the shell the LCA moves front to back off of the pin then the are bad. The car wonders on uneven roads. This usually accurs when you tighten the pin nut while in the air using OEM style.

Poly bushings do that as soon as they are installed. And then you lube them. It has nothing to do with installation it is the design. What Holds the LCA on the pin? Only the OEM bushing . Not the poly style lubed.

Put the car in reverse and hold your foot on the brake . Apply the throttle and watch the LCA move off of the pin. Its even worse with the adjustable struts.

On the subject of poly struts. take them off after some miles and see if the protrusion that goes through the K-member is still there. They have no shear sleeve molded into the poly bushing. I try to use only rubber with the shear sleeve molded in. But even the cheap rubber without the shear sleeve last longer then the poly. They do not like friction or crush they are to stiff and crumble. Been doing these cars since the 70's. I tried them all.

We do a lot more then suspension here and have everything to do any type of work. Motors, frames , and anything needed on any type of car. Some places and some cars poly is the way to go . Just not on mopar LCA's or struts. We actually did away with the strut bushings and were working on putting bearings in the lowers on our car.

All your doing is making a fool out of yourself to many members that come here. I use this post to advertise for work. This is one of many.

Steve 119.JPG