Rear frame rail patches

[JKCuda]

My car was resto’d last year…everything but the frame rails. Fronts were ok and we patched them. Rears were “ok” but not great, but after the trunk pan was put in the guy didn’t do a great job with the spot welding to where I can squeeze the rail in a spot or two and it flexes because it isn’t attached. They were previously patched so I’d like to just replace the section from the rear shock crossmember back. Anyone have experience with these? I’m just starting out welding but have a friend who can come do it for me. Just curious if anyone has experience with fitment or quality on these. Looks like a bunch have been sold.

Frame rails

 

[cuda joe]

i did mine 25 years ago you would want to drill holes in the trunk floor and plug weld them then grind and dress up the welds. use weld through primer on the bare metal

 

[JKCuda]

i did mine 25 years ago you would want to drill holes in the trunk floor and plug weld them then grind and dress up the welds. use weld through primer on the bare metal

Yeah I’m not too worried about the install, more so fitment and quality of the pieces for sale. I appreciate the tip though. I have lizard skin in the trunk that I’ll have to grind out, which sucks, but it is what it is.

 

[gzig5]

Fitment from the crossmember back isn't too critical. Just mark and measure all the attachment points, like for the rear spring, and just make sure those points end up in the same place with the new part. Probably one of the more straightforward jobs. There are diagrams with the important points measured out, but just take a lot of linear and cross measurements of the original parts and you should be good.

 

[JKCuda]

Fitment from the crossmember back isn't too critical. Just mark and measure all the attachment points, like for the rear spring, and just make sure those points end up in the same place with the new part. Probably one of the more straightforward jobs. There are diagrams with the important points measured out, but just take a lot of linear and cross measurements of the original parts and you should be good.

Good to know. That was my plan. Lots of measurement and test fit before fully welding it in. Ordered the pieces yesterday. I’m going to try to weld it myself but I’m brand new so might have my buddy handle anything that isn’t a spot/plug weld.

 

[cuda joe]

practice on scrap metal then tear the weld apart to see if it was a good weld

 

[JKCuda]

practice on scrap metal then tear the weld apart to see if it was a good weld

Yup that’s what I’m doing. Based on the way the ones on thr car look, I can’t do any worse lol.