Rear body mount stripped?

[E84MC]

So my second to last rear driver side body mount is stripped (the one right behind the tire), it’s not just loose wiggling around but barely tightens up. I’ve seen online a couple ways of fixing this but I am not a welder. My question is if all my other mounts torque to spec (like they do) will I be ok with leaving that one as is since the one behind and in front this one are good? Only planing for 400rwhp max.

 

[Mac442]

Just drill out a 1” hole in the trunk to access the cage nut, cut or drill out the cage nut and use a regular nut and large washer to tighten. It’s better than nothing if you don’t have access to a welder.

 

[JAMCAR223]

Just drill out a 1” hole in the trunk to access the cage nut, cut or drill out the cage nut and use a regular nut and large washer to tighten. It’s better than nothing if you don’t have access to a welder.

And then you can push in a 1" rubber body plug to cover the hole, or have the 1" piece welded back in

 

[E84MC]

Just drill out a 1” hole in the trunk to access the cage nut, cut or drill out the cage nut and use a regular nut and large washer to tighten. It’s better than nothing if you don’t have access to a welder.

Might try this thanks

 

[Ugly1]

If you have room( probably not ) you could try running a tap up in it and go to a little bigger bolt. I just can’t remember if it’s a in frame or tab you get to work with.

 

[39F]

Be thankful it's stripped and not broke off see if a 7/16 bolt can grab grab some threads it's gotten me out of a pinch

 

[E84MC]

Be thankful it's stripped and not broke off see if a 7/16 bolt can grab grab some threads it's gotten me out of a pinchI will definitely try that first if the bolt comes out. I didn’t want to remove it right away since it tightened up a little bit and I’ve been at work all day.

Be thankful it's stripped and not broke off see if a 7/16 bolt can grab grab some threads it's gotten me out of a pinch

Yeah thanks I should try that first if the bolt comes out. Haven’t tried since it tightened up a little bit and rather have that then it to be completely loose making noise.

 

[fly_25]

If it's stripped because of rust it might be a good idea to cut the cage nut out from inside the trunk and replaced it with a normal nut and clean up the rust in that pocket a little bit, or if it's stripped because of cross threading/over torquing then you could use a thread repair kit like a helicoil. I don't think using a larger bolt would work because it wouldn't fit the steel bushings that come with most aftermarket body mount kits. I made 1/4 inch thick steel "washers" the same size as the factory cage nuts to retain the same strength as the factory design.

 

[E84MC]

Thanks everyone for the help I appreciate it but would it really be a bad idea to use the 9 out of 10 mounts?

 

[Ugly1]

Thanks everyone for the help I appreciate it but would it really be a bad idea to use the 9 out of 10 mounts?

Not like it’s not been done before, one on my El Camino had to have had a broken bolt for years. All depends on plans of what you are going to do with the car. It adds a “weak “ spot putting more stress to the other mounts. As a daily you’ll probably never notice it unless it squeaks or rattles. If you do more stressful driving, twisty’s and such, you’ll want to keep an eye on it like when you do oil changes. And put it on a need to fix item.