Repairing pulled frame openings used for tie downs

General Mopar Tech Discussions

  1. AR67GTX

    AR67GTX Well-Known Member

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    I’m not sure what the heck some previous owner did with my 66 Satellite but I had about a half dozen of those 1” holes in the bottom of the frame rails apparently used for trailer tie downs that were distorted - some pretty severely - both front and rear. At first I thought maybe it was damage from a frame machine but I’ve had this car pretty extensively disassembled, bumpers off, all interior out, scoped every where I couldn’t see, and I can’t find a wrinkle, replaced panel, repaired chassis floor panel or any damage anywhere underneath or in the main body structure. Just a small repair on a hood corner and ding in the trunk lid. I think they just tightened the hell out of trailer tie downs and/or the suspension action stretched the metal.

    Anyway, the underside has been stripped and repainted somewhere in the past and still reasonably clean so all those distorted frame holes bugged me. I got a grade five bolt and a bunch of heavy/thick 1” washers and a heavy 1-1/2” washer. With 3 heavy 1” washers under the bolt head I fed it up through the hole, put the 1-1/2 washer on the outside of the frame and a couple more 1” washers behind it and the nut. Positioned the bolt towards the pulled area with the big washer on top of the pulled area, snugged it in place and rattled it down with an electric impact. It typically took around 3 or 4 separate bites at it but it flattened the metal back down to profile and even left the hole’s original round shape, although I did run a 3/4 inch stone in my drill up there to dress it up. On the front rails there are a couple oblong slots that allow slipping a larger washer inside with opposing edges ground down a little to match the interior frame width. It took a bunch of fishing around inside to get the bolt inside the bigger washer with a couple smaller ones on top but I managed. A little primer and lacquer touch up over the area and they look good as new.

    Thought someone doing an under-car cleanup might run into the same thing and could use this.
     
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    • WileERobby

      WileERobby Well-Known Member

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      Nice job, good creative thinking. Now, would you recommend the same technique for the hole in my head ? :eek:
       
    • WileERobby

      WileERobby Well-Known Member

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      • LowBikeMike

        LowBikeMike Well-Known Member

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        I wonder how many of these cars have stretched frame holes from being tied down to tight on the transport trucks.
         
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        • zyzzyx

          zyzzyx FBBO Gold Member FBBO Gold Member

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          I don't understand why you would tie a car down that way instead of using the
          rear-end and lower control arms so the suspension isn't fighting the process!
           
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          • RemCharger

            RemCharger Well-Known Member

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            The bent up holes are often from tow trucks from back in the day.
             
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            • MarPar

              MarPar If it weighs, it pays. FBBO Gold Member

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              Did the PO swiss cheese it for drag racing??
               
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              • LowBikeMike

                LowBikeMike Well-Known Member

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                With limited space on transports they tried to keep the body from moving to avoid hitting parts of the truck and causing damage, especially on cars in the lower sections.
                 
              • 69 Sleeper Bee

                69 Sleeper Bee Well-Known Member

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                I had a few like that on my 69 Coronet 440 from the transport. I am pretty sure it was I-10 between Texas and Florida when it was delivered to me from South Dakota that did it as the highway is rough through there.
                 
              • diesel_lv

                diesel_lv FBBO Gold Member FBBO Gold Member

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                Nope, I-40 in Oklahoma. I ride a hardtail motorcycle n that is the worst interstate I've "Ever" ridden.
                 
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                • 440 PHIXX

                  440 PHIXX The Island of Misfit Mopars FBBO Gold Member

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                  My Charger has those battle scars!
                   
                • AR67GTX

                  AR67GTX Well-Known Member

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                  No - all factory punched holes.
                   
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                  • AR67GTX

                    AR67GTX Well-Known Member

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                    Not sure but my 66 Corvette has factory tie down holes in the frame specifically for shipping. They fit a T shaped hook that fits right in them. The one time I had it towed on a flatbed, he had a set of those hooks in his rig and used them. Holes were reinforced though. Strange thing - my Satellite still has the factory tie downs in the rear.


                     
                  • smallie9

                    smallie9 Well-Known Member

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                    Your not alone, I have numerous tears in mine as well. Car was only drag raced and never had any reason to attach to a rack.
                     
                  • Pendo

                    Pendo New Member

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                    I have these stretched holes on some of my cars as well. They usually come from frame machines to repair damaged cars that have experienced some twists or hard impacts but could be transports as well if not to stretched out.
                     
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