Body mounts

[Stuart]

hey guys, just a quick question
I believe one of my body mounts is bad and wanted to replace the few in the back and just wanted to know how difficult it is and any help to make this process easier. I've never done this before so I figured someone on here has. Thanks

 

[Clone TIE Pilot]

It depends how rusty your car is.

 

[565bbchevy]

If you think one is bad then plan on replacing them all, if the car has no rust issues at all it is not too bad a job but if it does you can end up with bolts breaking and having to cut into the floor or trunk area to access the cage nut and the possibility of doing repairs on the frame and body if the rust went too far.
Just do a search on here there are plenty of discussions on this topic and try Youtube to see videos of what you might be dealing with.

 

[Injectedcutty]

As 565 said, doing body mounts can get ugly real quick! I was able to remove the bolts along the frame pretty easily until I got to the trunk area....all 4 bolts snapped which required cutting 4 holes in the trunk to remove the top halves of them. I replaced with all new 10.9 metric hardware throughout and used locknuts for the trunk area bolts.
Our cars love to eat things over the years in regards to rust....just be patient and if bolts start breaking there are remedies.

This is what a 30 year old trunk area body bolt looks like!

The bolts are supposed to be 10mm, but with years of corrosion it was eaten down to about 5 or 6mm.

 

[pagrunt]

As the other said about it getting ugly fast, the cage nuts another thing to cause headaches. Mine let me get a few turns until they gave out from the rust. And if you're trying one section, might as well do them all.

 

[Stuart]

As the other said about it getting ugly fast, the cage nuts another thing to cause headaches. Mine let me get a few turns until they gave out from the rust. And if you're trying one section, might as well do them all.

Thanks everyone! Luckily my car is rust free but I expect them to still be a pain because let's face it, nothing ever goes as planned for us car guys. But I did put my car away for the winter so I'm gonna pickup some things and do it in the spring

 

[565bbchevy]

The problem is that even rust free cars can have issues with body mounts and you won't find the issues until you start doing the disassembly especially since the cage nuts are held in place with very thin metal.

 

[Texas82GP]

A good idea I read on here is to drill a 1/4" hole above the cage nut so you can soak the cage nut with penetrating oil.

 

[pontiacgp]

I suggest you get a rotisserie. When I did mine I have removed one bolt that was in great shape and naively thought the rest would be ok as well, or maybe I was just in denial. I ended up cutting the cage nuts out in 9 locations, fabricated new cages for the stock nuts and then welded them all back in while on my back. I still have a t shirt or two with burn marks that look like I got hit with shrapnel. If I was smart and got a rotisserie the job would have been alot easier, quicker and cleaner welds. Once done you can always sell the rotisserie and get all or most of your money back, or maybe make a profit.

 

[Streetbu]

If one is bad, then others are bad too.... still in process of doing mine. Not a fun job.