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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, Reviving a 1976 Coupe deVille in Past Cadillac Vehicle Discussion; Those plates were generally tin plated (galvanized). The plates were there so that moisture could be removed from the trunk. ...
  1. #61
    deVille33 is offline Cadillac Owners Connoisseur
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    Re: Blueboy, reviving a 1976 coupe de ville

    Those plates were generally tin plated (galvanized). The plates were there so that moisture could be removed from the trunk. Of course the fuel tank is located below this area. We have left them open when restoring trunk pans to allow air to circulate and aid in curing the paint. If the galvanizing has rusted through, we coat the plates with a metalized paint and reinstall them.

  2. #62
    blueboy is offline Cadillac Owners Fanatic
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    Re: Blueboy, reviving a 1976 coupe de ville

    Started pulling off the vinyl top today starting at the back deck lid...oh dear whatta mess. I did not know how the back window played into this scene...now I know! There is a channel running around the window which is set in rubber. The whole channel is rusty although it feels solid but the rubber is perished. I really didn't want to remove the rear window. However........I will take i'll take some pics tomorrow. Grrrh!

  3. #63
    talismandave's Avatar
    talismandave is offline Cadillac Owners Master
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    Re: Blueboy, reviving a 1976 coupe de ville

    On mine, I was trying to remove the rubber/caulk only. I wanted to get to the metal to treat it and paint it. In the process the sealant came out from under the glass and I removed the window.

    I also repeated the whole process on a donor car this spring. this one was a bit tougher because the rust was not as bad.

    I did manage to remove it without damaging the glass on both cars.

    NEVER PRY UNDER IT...EVER! You will be sorry. (Take it from the 16 year old me, he knows!)

    Once the molding was out I scraped the sealant loose from underneath, little at a time, doing about a foot at a time. Tools I used were a slotted screwdriver, utility knife, and a plastic trim removal tool. Start where it is rustiest and when you get a couple inches you can grab, pull and scrape as you go around.
    When I would come to a section that was really stuck I would use the utility knife and cut along the edge of glass at an angle. (In underneath it as much as possible.)

    *Pro tip: always use Irwin brand utility knife blades. They are unbreakable. You can bend them into a 45 degree angle! I use them at work as a screwdriver all the time, have never been able to break one. Also keep an edge better/longer than other brands.*

    Once you have the channel clean then you go to just cutting with a knife, getting it as far under the glass as you can. Because the channel around the window is so wide you can get a good enough angle on the knife to cut the glass free.
    It isn't that bad a job and I would not think twice about doing it a third time. I just couldn't see leaving the rust under the window seal to deteriorate further and eventually leak. Oh, and one more thing............NEVER PRY UNDER IT, EVER!

  4. #64
    blueboy is offline Cadillac Owners Fanatic
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    Re: Blueboy, reviving a 1976 coupe de ville

    Here's pics of Blueboy topless. As you can see its a mess. I really don't want to take out the windows if at all possible and I'm now thinking fiberglass and bondo. I know some of you will shriek, "no no no...do it properly, get new metal welded in". Thats easy to say but finding a good welder who can replace the sheet metal properly is a gamble. I will make some enquiries but.....
    Thanks for your tips talismandave, you are right that is the only way to get the glass out. BTW when reinstalling the glass does one use butyl from a tube?


    http://www.flickr.com/photos/62382565@N03/9667758144/

    http://www.flickr.com/photos/62382565@N03/9664527927/

    http://www.flickr.com/photos/62382565@N03/9667760562/

    http://www.flickr.com/photos/62382565@N03/9664528781/

  5. #65
    talismandave's Avatar
    talismandave is offline Cadillac Owners Master
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    Re: Blueboy, reviving a 1976 coupe de ville

    I actually "installed" mine yet because I am having a replacement piece from a donor car put in. Mine is tacked in place with some double sided tape until then. I believe that it is a butyl tape that you put it in with though. Hopefully someone fields that for us!

    he need to I understand the need to draw the line somewhere on what is to be a driver quality car. I have made trade offs on items I know should have been done better. If mine looked as good as yours I would hit it with Rustoleum Rust Convertor and Bondo myself. The replacement one I am using is about the same as yours.

    screen shot pc

    taking a screen shot

    I don't have any photo of mine, but there wasn't even enough left to have a line to work along to glass or Bondo. I tried and failed at mocking it up from metal window screen and Bondo and was thankful to find an unusually solid (For Wisconsin) donor. I got the panel and a trunk lid for $105.00 so I couldn't go wrong.

  6. #66
    outsider is offline Cadillac Owners Connoisseur
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    Re: Blueboy, reviving a 1976 coupe de ville

    It doesn't look that bad! Clean it up with a wire brush wheel and fiberglass it in. That would be my approach on that. I know some people say fiberglass/bondo is the devil but it's going to be under the top and if you clean that rust up and treat it the fiberglass will help seal it and then you can prime the whole thing with a primer/sealer and you'll be all set. It won't rust again for many many years. Probably just as long as a replacement part would last if not longer.
    pompste and greencadillacmatt like this.

  7. #67
    blueboy is offline Cadillac Owners Fanatic
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    Re: Blueboy, reviving a 1976 coupe de ville

    Well guys.... I've cleaned, rust proofed and painted with POR 15 both the trunk, battery tray and rear window deck lid.
    http://www.flickr.com/photos/62382565@N03/9712157784/
    http://www.flickr.com/photos/62382565@N03/9708919673/
    http://www.flickr.com/photos/62382565@N03/9709161021/
    I have decided not to weld a new piece of metal into the deck lid. Taking out the window and the interior is just too much of a hassle. Eastwood Products have a good selection of body fillers and hardeners etc. I just feel to weld a new piece in place, although it might be the 'proper' way to go is just too much cheese for the monkey and as 'outsider' says, "its not that bad". I'm not trying to build a concours winning '76 CDV. I just want it to look cool and drive well. I will be cleaning and starting to sand the deck lid very soon before the weather turns here in Tennessee. Did I mention that I have found a place that will put on a new top for $450 all in ?
    I have been running Blueboy backwards and forwards in my drive to test trans and brakes. Yesterday the brake pedal did not come back up. I will take the front wheels off and check the rotors and to see if the calipers are sticking...also do a freshen up of brake fluid. The back drums will also be checked. Could it be the power brake unit?
    More soon.
    pompste and greencadillacmatt like this.

  8. #68
    outsider is offline Cadillac Owners Connoisseur
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    Re: Blueboy, reviving a 1976 coupe de ville

    Nice work on the POR 15.

    As for the brake pedal if you figure it out please tell me. My 69 is still having this issue after replacing power brake booster, master cylinder, rebuilding rear drum brakes. I'm not in the process of switching out some brake lines. Front calipers look OK on mine but the pedal will not come back up...

  9. #69
    cadillac kevin's Avatar
    cadillac kevin is offline Cadillac Owners Master
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    Good job with the POR15. I'll be using alot of it on the toronado. (Not looking for a show car, just a fun driver.)
    greencadillacmatt likes this.

  10. #70
    talismandave's Avatar
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    Re: Blueboy, reviving a 1976 coupe de ville

    Looks good and seems like a good price on the top install.

  11. #71
    blueboy is offline Cadillac Owners Fanatic
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    Re: Blueboy, reviving a 1976 coupe de ville

    The weather here in Tennessee has been weird, lotsa thunderstorms and lotsa rain! This is unusual and has had a delaying effect on my work. I wish I could get Blueboy inside but right now my driveway is the only place I can work. Maybe a temporary tent type of covert...more for keeping off the leaves!
    Anyway I am pleased with the POR 15 it is a wonderful product. The trunk interior and battery are fine with no signs of any rust returning ...as yet! The next step is the filling, sanding and finishing of the rear deck and this will be started very soon. This weekend looks like fine weather so until my specialist filler arrives I will concentrate on cleaning off the roof, removing the trim, checking out the brakes and tracing the screeching noise coming from the engine compartment...could it be the air compressor? I will also change out the filters, fuel, oil, trans etc.
    She's Moving!
    77CDV, pompste and talismandave like this.

  12. #72
    Classic L is offline Cadillac Owners Member
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    Re: Blueboy, reviving a 1976 coupe de ville

    Hey man, congrats on the progress. Very inspirational. I'm sure we all wish we had garages with bays big enough to have two Cadillacs in tandem and two flanked (with doors open). But it's good that you keep working on whatever you can in the conditions/challenges we are faced with. More power to you! ... and may we have a short dry and unseasonably warm autumn/winter! (people up here in New England have already got the wood burning stoves firing up, and Summer's not even over yet... yeesh!)
    pompste likes this.

  13. #73
    blueboy is offline Cadillac Owners Fanatic
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    Re: Blueboy, reviving a 1976 coupe de ville

    Thanks Classic L. Yes we had a very mild winter here last year but one never know.....
    Determined to get Blueboy running.....replacement title on its way, tag and insurance (Antique) next. Gotta get the brakes fixed (brake pedal not returning) and that might entail a new master cylinder/power booster. Keep y'all posted.
    talismandave likes this.

  14. #74
    blueboy is offline Cadillac Owners Fanatic
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    Re: Blueboy, reviving a 1976 coupe de ville

    We have the viper alarm/remote door lock system sorted. I had this installed along with the 'vintage' look AM radio that is actually an AM/FM stereo radio with CD changing facilities. The 6 changer was mounted in the trunk before I removed it to derust, paint etc,etc. The trunk lid is corroded along its bottom end so its going to be an angle grinder, POR 15 followed by filler, sanding and shaping. It will get painted with the rest of the car sometime in the future. Got some trim off and it will get the stainless steel treatment. I've got the spats stripped down and they are in pretty good condition. Little bit of rust but nothing serious. Stripped all the stainless trim off which will need new mounting catches and screws. Once the trunk lid is done I will get the trunk underlay, carpet and the new weatherstripping installed . The light units need cleaning and new bulbs installing. I have got the antique plate and insurance will be limited classic. Blueboy is firing up first time right now and as soon as the brakes, tires, filters, and fluids are sorted it will time for a run around the block!

  15. #75
    blueboy is offline Cadillac Owners Fanatic
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    Re: Blueboy, reviving a 1976 coupe de ville

    Sorry chaps. Had a couple of weeks of intense money paying work. back to Blueboy this weekend. Report early next week. Rock on Caddy Lovers
    talismandave likes this.

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