[GoGoat]

I'm helping a friend on his car. The body bushings just behind the rear wheels are in pretty bad shape. How difficult is it to replace these? If we replace the perches how do we know they are at the correct height? Any advice in removing bolts without distroying the cage nuts? Thanks

[OG68]

Go slow with a 18" long, 1/2" breaker bar or ratchet. Do not use an impact. Lubricate the threads with some Kroll oil and other oil that creeps into the threads. Work the bolt back and forth SLOWLY.

[b-man]

Kroil works nicely, however getting it to the bolt threads past the bushings so it can work its magic won’t be easy.

Might be worth considering drilling a smal hole above the body bolt so you can properly soak the threads with the Kroil penetrating oil.

Don’t be in a hurry, give the Kroil plenty of time to do the work, a few days perhaps longer and reapply a few times. You can’t just squirt some on and start cranking away.

[grivera]

And when the time comes- loosen other bolts and lift the body off the frame just enough to add friction so the caged nut doesn’t spin so easily.

[george kujanski]

Drill a hole above it; Add penetrating oil. If no go, open up the access hole, apply heat then apply wax to the hot bolt end. Works pretty well. With a good size access hole you can even try to hold the cage nut. I made a flap out of the trunk sheet metal to gain access, then you can seal it up.

George

[Singleton]

Originally Posted by GoGoat

Any advice in removing bolts without distroying the cage nuts? Thanks

Here’s some pics of what I did on a Firebird, but would be the same for an A-body. I used a 6” long, 3/16 drill bit, drilled up through the frame perch, place a socket over the bolt head and drill next to the socket. Go all the way through the bushing and all the way through the cage nut. Unchuck the drill bit, leaving the bit in place in the cage nut. Now you can remove the bolt while the drill bit holds the cage nut. I did this AFTER I broke and spun the cage nut, but doing this will prevent that.

[GoGoat]

Singleton, I like your idea as I can remove drill bit and squirt penetrating oil up there and reinstall drill bit. Probably be next spring as too many other things going on now. Thanks.