LynnBob Mustang

I've got my trunk brace out of the '65 and I was thinking when I install it that I will bead weld it back in instead of of spot welding it back in. I'm not looking to be original, just safe, functional, and get the job done. Most everything will be covered in seam sealer when done anyway, so looks won't matter.

Any pro or cons for either?

I'm realizing more and more just how cheap these cars were made the more I rip it apart, I'm thinking the bead welding will be stronger in the long run.
Thanks for any tips.

Lynn

2+2GT

Yeah. A beat will be on the edge of hem on the panel, but it was designed to welded inside the hem. What you propose would be weaker than the factory spot welds. Use rose welds with your MIG. The trunk braces should be welded all the way through to the frame rail, or they will just be decorative. I'd hate to see your bumper held on by something decorative.

bent metal

Are you guys talking about the trunk brace, or the bumper brace?

Any pictures to show exactly where you are refering?

LynnBob Mustang

I'm not talking about the bumper braces.
Over all pic.

I'm talking the trunk brace where it is mounted in side the trunk and the trunk floor edges.
You can see the one spot weld that held the tab on the trunk floor that was attached to the trunk brace here..


You can see where the two spot welds on the tab where the trunk floor was being held on by two spot welds to the trunk brace.


You can see where the trunk floor edges are beat up from getting the trunk brace off the the floor as well.

It is those areas where I'm talking about using bead welds instead of spot welds.

Lynn

LynnBob Mustang

I understand what your saying. I'll fill the spot welds back in, as those holes need to be fill in anyway, when I attach the brace to the floor and do a bead as well.
Lynn

2+2GT

Ah, the rear crossmember. Definitely rose weld. Between the crossmember and taillight panel, and especially through the crossmember to the frame rails.

bent metal

I'm no "pro". I've only done one Mustang. So "2+2" would know better then I would. But you might want to get the new pieces before you decide what to do. I know when I did that area on my project I had to move those brackets to make them line up with the tail light panel. But mine was all new stuff. Your trunk/bumper brackets are original, so they should be in the right place already. Still, I think it would be smart to bolt or clamp on everything to make sure it all fits. Then decide about the welding. I ended up welding mine in with a bead, then plug (rosette) welded them also to the panel that attached to it.

I'd put it all together, then you'll know what you should do. IMO

toddpthayer

Okay, I'll bite. What's a 'rose weld'

Thanks

2+2GT

Well, it's more commonly called a "rosette weld". Basically, you pinch or drill a 1/4-3/8" hole in the top panel, but no hole in the bottom. Using a MIG welder, you weld through the hole to the lower panel, and fill the hole with weld, binding both panels together. Structurally identical to a spot weld, it can easily be ground and finished to have the same appearance as a spot weld, too.

toddpthayer

Great,

Tuning up what little I remember from welding classes 30 years ago.

Thanks,