How do you get the rear body mount bolts, near the rear wheel, loose? No access from above , I flooded area with PB blaster. Impact just sat there.... I know they are 61 years old, but gee. Don t want to cut them, the bolt head is in perfect shape. What did you do to remove yours? Thank you. Kent.
62 rear body mount bolts.
- Thread starter heddrik
- Start date
Look on post 326 on Jim Sullivan's 1962 impala going to try to save another one. This show what is required if you can't remove or save bolts. The caged nut might have to be replaced if you can't save it.
If you can't get bolts out then cut heads off and when lifting body up off frame bolts will slide up out of mount. Then if you have torch you could try heating bolt next to nut and see if you can free up bolt from caged nut then you can use a pipe wrench on remaining bolt exposed. If not then the post above will be the next option.
As long as the captured nut is not spinning inside the brace, we have had a little bit of success drilling a small hole in the bulge in the floor inside the trunk, above the nut and spray penetrating oil on the other side of the bolt. If the nut is spinning, there is no option but to cut the bolt off or cut the bulge in the floor open to access the nut, then heat it and clamp vise grips on to hold it.
Use a holesaw small enough to go from the outside of the box brace so that you can get a wrench on the nut…….. you can re-weld a hole later if needed
My understanding is he is trying to get the bolts out of the rail directly behind rear tire in center top of tire as in Jim's picture which is on top shelf of trunk which he cut out to replace the caged nut. The box brace is back of tire. Usually box is rusted out anyway and cutting it is no problem getting bolt out since box gets replaced anyway it has the caged nut on it already.
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Then I misunderstood because I thought he was talking about the box Mount……..My box mount was solid but the cage nut turned…….
Captured nuts are so much easier on the assembly line and they never expect or care if the body has to be removed from the frame 60 years after production.
When I worked in a Ford dealership there was a recall for subframe mounting plate and bolts on Taurus ,sable on the two rear subframe to body because of salt corrosion . If the caged nut spun you had to cut two holes about 2 and 7/8 in front floor boards .Then through hole bend tabs up and replace caged nut and bend tabs back down. Put a rubber plug over hole and replace bolt and reinforcement plate washer. It didn't pay much under warranty recall. They furnished the hole saw also and the bolt kit. Two different pay levels depending on having to replace caged nut or just bolt kit So yes it was a pain even for tech's back then and probably still is .
Pictures from you would help .
If it's in the box brace body mount ????
If that box is rusted out no need to drill bolt will need replaced anyway. Got any pictures of your car in progress???
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You could cut out one side replace caged nut then weld back the side you cut out to gain access.