Rear "ISO MOUNTS" 80 Volare

shadango

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My son had the rear ISO mounts fail on him today....the u bolts sheered......butt end of the car dropped, axle separated from the leaf springs....

I have never heard of this happening.....but...it happened.....All I can figure is that the ISO stuff failed and resulted in stress on the u bolts?

That, or the u bolts were rotted I guess....

I had seen years ago that someone made a kit that would replace that ISO mount stuff......

I found this from firm feel.....any other options?
Firmfeel Mopar Suspension and Steering

I havent seen the actual mounts he has to see what failed yet.....but with this kit above is that all he would need?

I am having a brain fart and cannot recall where the lower end of the shock mounts.....they muts mount to the axle though cause I think they bottomed out and stopped it from being worse....

He lucked out....he was on side streets when it happened.....

Thanks folks!
 

AMC Diplomat

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My son had the rear ISO mounts fail on him today....the u bolts sheered......butt end of the car dropped, axle separated from the leaf springs....

I have never heard of this happening.....but...it happened.....All I can figure is that the ISO stuff failed and resulted in stress on the u bolts?

That, or the u bolts were rotted I guess....

I had seen years ago that someone made a kit that would replace that ISO mount stuff......

I found this from firm feel.....any other options?
Firmfeel Mopar Suspension and Steering

I havent seen the actual mounts he has to see what failed yet.....but with this kit above is that all he would need?

I am having a brain fart and cannot recall where the lower end of the shock mounts.....they muts mount to the axle though cause I think they bottomed out and stopped it from being worse....

He lucked out....he was on side streets when it happened.....

Thanks folks!
Multiple replacement options in this thread: how to lose the iso leaf springs

Or you could pay for new ones: Mopar FJM Body Archives - autorust.com
 

Mikes5thAve

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There's been the odd case of brackets failing due to rust. It would need to be pretty bad off to cause the U bolts to rust through.
 

shadango

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SO we sourced the lower plates and poly biscuits....

Turns out the upper plates/shock mounts are trash too......

Soooooooo......anyone have a set they wanna sell? LOL

Or are these "unobtanium" ??

Screenshot_20250203-195748.png
 

AMC Diplomat

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Mr C

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SO we sourced the lower plates and poly biscuits....

Turns out the upper plates/shock mounts are trash too......

Soooooooo......anyone have a set they wanna sell? LOL

Or are these "unobtanium" ??

View attachment 55081
I had the shock mounts snap off my old high mileage 5th Ave after many years...rust and metal fatigue. They are not available new I had to get mine from a scrap yard.
 
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