Can someone please explain what a pinch weld on the unibody frame of a car’s undercarriage area is, please? Thank you. Marnet …still reading, still learning…

I believe they would be referring to spot welds that are created by two electrodes pinching two pieces of sheet metal together, then applying high voltage to them to weld the two together. More specifically though I think it is referring to the ridge or flange under the unibody that are the normal …

The pinch weld is where two pieces of metal are welded together to form the lower chassis of the car. It runs from behind the front wheel well to before the rear tire well underneath the doors. Why do you ask?

If you want an analogy, think of clamping 2 pieces of paper which represent metal, between the tips of a thumb and forefinger. That’s how spot welding works and it’s pretty common with automobile sheet metal assembly because it’s fast, easy, and cheap. Don’t tell me that recent bump in the road bu…

Yep, that 70mph hit on the broken/raised section of road on the interstate has done a real number, as in $$$$ on the car. Dealer service assessment is that the left front strut, strut mount and bearing need to be replaced and the front end aligned. About what I expected. They found no sign of pro…

Oh yes, and the body damage includes damage to the rocker panel too.

I forgot to say thank you to each of you for your explanations in answer to my question. I do thank you!

INTERESTING UPDATE: Independent mechanic shop agrees the sound might be from the strut but not necessarily. Indy shop suggests that rather than just replace the strut and not know if it will fix the problem that they hook up sensors which actually listen to various suspect parts, one part at a tim…

Well I really hope its worth it. I really can’t see worrying much about the pinch weld. I would have hammered it back straight and painted it. On my old Riv, after some years, I went to jack it up and the jack went right through. I just carried a 2x4 after that for emergencies. Never seemed to …

I got to see the ding in the pinch weld today. If it hadn’t been pointed out to me I wouldn’t have been able to spot it. Frankly, I have trouble seeing how that can need removing the front seat, pulling up the carpet and such. I’m inclined to say make sure it won’t start rusting and settle for th…

What is a pinch weld?

Maintenance/Repairs

meaneyedcatz October 12, 2012, 5:45am 5

BustedKnuckles is on the right track. Look at the rocker panel and you will see a flange about 3/4" hanging down. This is the pinch weld, for lack of better terms this is where the floor is welded to the sidebodys.

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What is a pinch weld?

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