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Customs How to: '62 Impala quarter panel repair.

Discussion in 'The Hokey Ass Message Board' started by flynbrian48, May 23, 2024.

  1. flynbrian48
    Joined: Mar 10, 2008
    Posts: 8,301

    flynbrian48
    Member

    Last fall I bought this '62 Impala SS, drove it for two weeks and left for Florida for the winter. I've always loved these cars, had a '62 Sport Sedan a few years ago, and jumped on this one. It had been put together over the last 35 years, hadn't been driven for 15 years. It's got a VERY healthy big block, TH400 and 4.11 posi. That is going away for some 3.31's, but that's another story.
    When we got home I fired the car up (never mind the puddle of trans fluid from the TH400...) and pulled it outside. I wasn't surprised to see that the little blisters in the paint on the right rear wheel lip had worsened, and there were more of them all along the lip. I was going to get a full quarter panel, but found a local company here in Michigan that had wheel opening patch panels. That seemed like much less work than replacing the whole quarter.
    The plan was to trim the patch panel to just larger than the wheel lip, use a flanging tool to run a flange around it, trim the quarter to match then shove the patch panel under the original quarter skin with a bead of 3M Panel-Bond on it, and call it good.
    I didn't realize there'd be no room to get the pneumatic flange tool head on the quarter skin to flange that, but I hadn't thought about how I'd clean up the quarter panel on the inside to do the repair the way I'd planned.
    Turns out, there isn't a practical way to get the inside clean enough to use the adhesive, and the the wheel house lip is cheesy, so that needs to be repaired as well. So, tomorrow I'll make some patches for the wheel house lip, and (carefully) weld the new lip on, so as not to warp the (otherwise perfect) original sheet metal.
    I'm really enthused about this car, and don't mind this little bit of body work, as I was planning on slicking the car up with new paint and some detailing anyway. 4C8B402E-D422-4EAB-9A1C-B1D7B5D5A42B.jpeg 470C4C7F-4C08-44DF-A935-4359B19F2CA0.jpeg AEBA656D-F778-4F54-BAF3-58D92C80D6F3.jpeg 151120E5-C986-44BF-B54D-D94B312D7F9C.jpeg 2CC5A690-168C-4E41-8D6A-74E5287FF098.jpeg EEFF98B9-BCAA-49F6-91C7-0411279D7965.jpeg 29EE8AC7-F4B5-4746-8D2F-EE776F2C8FD1.jpeg CCF7ECE6-B4F5-4CCD-82D3-11FDC2ACF403.jpeg
    (edit) If you're wondering how long brazing pinholes in 1962 era GM sheet metal will last, or think it's cheating, note that this lasted 30 years. If my repair lasts that long, it'll be longer than I'll be driving the car!
     
    Last edited: May 23, 2024
  2. flamedabone
    Joined: Aug 3, 2001
    Posts: 5,486

    flamedabone
    ALLIANCE MEMBER

    My first thought was to leave it be, but that new panel looks pretty damn sweet, the little car deserves it. Speaking of what it deserves, a 5 speed would slip right behind that big block. And, it would keep you from having the change the gear set, so you are actually saving money....

    -Abone.
     
  3. flynbrian48
    Joined: Mar 10, 2008
    Posts: 8,301

    flynbrian48
    Member

    My first thought was a 700R4, but then I'd have to move trans crossmember and shorten the driveshaft. In the trunk was the original 3.31 ring and pinion, saved after the 4.11 swap, and another buddy of mine GAVE me a complete differential, open, with 3.31's. So, I have options. And, I don't want row a 5 speed.
    I totally agree that the car deserves a repaint, although initially I was going to leave it alone. My wife HATED the fact that the front fenders don't match, having been repainted after the engine swap 20 years ago. I think that's why the guy I got it from never drove it. The mis-matched paint soured him on the car, and it got shoved to a back corner.
     
    Last edited: May 24, 2024
    scotty t and chevy57dude like this.
  4. Nice! What color do you plan to eventually paint it? Always thought that body style was so classy.
     
    scotty t likes this.
  5. flynbrian48
    Joined: Mar 10, 2008
    Posts: 8,301

    flynbrian48
    Member

    Same colors, ginger metallic, an '89 GM color, and cream roof. The car was originally turquoise, be I don't want to paint the jambs and under the hood and trunk, so it will be what it is. I like the combo anyway.
     
    scotty t, lowrd, GordonC and 2 others like this.
  6. flynbrian48
    Joined: Mar 10, 2008
    Posts: 8,301

    flynbrian48
    Member

    Up and at 'em! Up early to get out and get the quarter finished up, as soon as the Naproxen kicks in... Man, this aging thing makes it harder to get stuff done.
     
    JalopyJimbo and scotty t like this.
  7. SS327
    Joined: Sep 11, 2017
    Posts: 2,767

    SS327

    If you would have stayed home this winter you’d be done and driving it by now! :D
     
    scotty t likes this.
  8. NoSurf
    Joined: Jul 26, 2002
    Posts: 4,509

    NoSurf
    Member

    Nice work. I am watching along. I like the idea of the patch panel. I have yet to start on my '64 ragtop.
     
    flynbrian48 likes this.
  9. Wanderlust
    Joined: Oct 27, 2019
    Posts: 816

    Wanderlust

    I would go ahead do the full lower quarter since you already have it and get one for the other side, in my experience the rust you can see is only a quarter of what’s actually there, seems much easier and less chance of warping than to dick around with pieces
     
  10. flynbrian48
    Joined: Mar 10, 2008
    Posts: 8,301

    flynbrian48
    Member

    I would have done that, but the left side had the entire quarter replaced before it got painted. This is not going get such an involved build that I never finish it.
     
    NoSurf likes this.
  11. SS327
    Joined: Sep 11, 2017
    Posts: 2,767

    SS327

    Like the T-Bird?
     
    flynbrian48 likes this.
  12. flynbrian48
    Joined: Mar 10, 2008
    Posts: 8,301

    flynbrian48
    Member

    DF4CF15A-0586-4A1C-A3F3-B6FD8D9E51E0.jpeg When I could finally move this morning I went out and tackled the Impala quarter panel. After studying the cut I'd made to remove the wheel lip, it looked like the panel flanger would indeed fit between the outer skin and wheelhouse, if I got the 1/4" of undercoating off the backside.
    So, I set to do that.
    Using a dolly to gently move the outer skin out, I was able to scrape all the undercoating off with a small putty knife. At least enough to get the flanging tool head in. I got a flange all the way around and trimmed the patch a little bit so as to not have it overlap the step.
    When that was done and patch fitted, I took a hard look at the rusty lip of the inner wheelhouse. It was toast. I then spent all afternoon making a new lip for that with my shrinker/stretcher, and brazed it to the (trimmed) wheelhouse.
    If I'd planned ahead, I'd have simply bought a new one and trimmed the lip off to make a proper patch, but it worked well enough that it can't be felt from the wheel opening, and I want to get this project done, not make it a full on restoration that, like my T'bird, will end up a garage ornament.
    I thought the 3M Panel-Bond would arrive today, but it didn't show up, which is good because I'd be still working on it right now. CCF7ECE6-B4F5-4CCD-82D3-11FDC2ACF403.jpeg 6E3BD3C4-D34C-44A0-B503-34F0FE437A29.jpeg BDC50C50-1302-4D89-887A-062EA26C8F7D.jpeg 4FFC5A63-E0AF-4848-8359-84D68392BD6B.jpeg BD207F0E-9B96-425E-AB44-A90B8763C574.jpeg
     
    chevy57dude likes this.
  13. Shots fired! Shots fired! Haha
     
    millersgarage and flynbrian48 like this.
  14. flynbrian48
    Joined: Mar 10, 2008
    Posts: 8,301

    flynbrian48
    Member

    Exactly. Anybody wanna buy a really cool T'bird project?
     
  15. SS327
    Joined: Sep 11, 2017
    Posts: 2,767

    SS327

    Weld don’t panel bond. You’ll see imprinting of the seam after out in the sun and then cooled off. Learned that lesson, glue is for models.
     
    oldengine and K13 like this.
  16. SS327 is 100% correct. This will eventually map through the paint. The doubled up material with the glue will expand and contract at a different rate than the surrounding metal and will eventually show through the paint. I have been called many times with complaints about "filler failure" when repairs like this have been performed.
     
    flynbrian48 and SS327 like this.
  17. mikhett
    Joined: Jan 22, 2005
    Posts: 1,541

    mikhett
    Member
    from jackson nj

    It's called a BOND LINE and it will show thru with adhesive .I WOULD WELD NOT GLUE!
     
    SS327 likes this.
  18. flynbrian48
    Joined: Mar 10, 2008
    Posts: 8,301

    flynbrian48
    Member

    I thought about that, but the possibility of warping this pretty flat panel (not IF it warps, but how badly, for me) for welding vs. gluing it led me to choosing this. I'll consider, but still leaning towards bonding it. I've done similar jobs this way, and never had an issue. Thanks for the input.
     
  19. 1pickup
    Joined: Feb 20, 2011
    Posts: 1,503

    1pickup
    Member

    Not really a fan of the flange method. Seems like a good way to get moisture trapped in there. Why not but weld the patch panel in? Use a mig & skip around, leaving lots of cooling time in between.
     
    SS327 likes this.
  20. flynbrian48
    Joined: Mar 10, 2008
    Posts: 8,301

    flynbrian48
    Member

    Well, moisture can't penetrate the epoxy adhesive, but as people have pointed out, the seam could show under the paint after a few heat cycles. I'll think on it...
     

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