Rear "ISO MOUNTS" 80 Volare

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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

AMC Diplomat

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shadango said:
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!
Click to expand...
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
 
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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.
 
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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
 
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AMC Diplomat

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Mr C

Mr C

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shadango said:
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
Click to expand...
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.
 
Camtron

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b-body shock plates brother. Ditch the goofy ass ISO and top shock plates. order some B-body plates, centering pins, u bolts, shocks and call it done. The FirmFeel shit is way over priced for what it is.
 
M_Body_Coupe

M_Body_Coupe

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shadango said:
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
Click to expand...
I've got an "appointment" in the garage later tonight...let me look for these. I know I have a set with the sway bar attachment brackets and I'm going to keep those, but I honestly thought I had saved a spare of the standard plates. More to come...
 
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