Priya's 79 chrome bumper conversion project

I may have the fill work done on the quarter panels and rear deck, I'm struggling to tell if the sides of the rear deck look the same cause I can't get a good look with the water sprayed on it. I'm going to try holding a light at a sharp angle to it and hopefully I can see it better. After these areas I still need to sand down the remaining areas of brown paint on the rear of the car. Particularly difficult to get smooth has been the line between my body fill and the old paint. I feel pretty good about where I'm at, though.
Hubby is going to have one of his autobody friends come over and look at it and give me his opinion on if it needs more work. On the Friday before last I had left the passenger side quarter panel thinking maybe it's close enough to done to leave. As the weekend went on I could see it in my mind's eye and and decided it was no where near good enough but I knew just where to sand it to improve on it. I went back in on the following Monday and looked at it again and decided it was not as bad as I thought over the weekend but did some more sanding and improved on it considerably. Unless the body man says different I'm going to call the passenger side quarter panel done too. It isn't perfect but I think it's close enough. If I wanted to try to improve on it I would need to add fill in the same tricky area shown where the fresh fill is in the picture below (ignore the blue arrows) and I might be just as likely to make it worse as to make it better.
I was pretty happy with the upper rear deck on the passenger side the last time I posted but not as happy with the driver's side. I pondered for several days on whether or not I could improve on it. The filler there is very thin in several places and I didn't really want to get back down to bare fiberglass anywhere again and have to add more filler. I eventually decided I had done much better on the quarter panels than the upper rear deck and decided I should keep at it and if I needed to add filler yet again, so be it. I don't know why I couldn't see the imperfections when I posted last time but this time I was really seeing it. I sometimes find it really hard to get my head in the right position and at the right angle so as to see the reflections on the wet panel. It's really hard to see a reflection in the lower quarter panel in particular because the panel slants downward and light doesn't want to directly reflect off of it into your eyes.
As you can see in the picture below I got back down to the fiberglass again in an area I was having a very hard time getting right (the panel is wet and it shows up more that way):
I sanded the area more with 80 grit to make sure the fiberglass would be below the level of the vette panel adhesive/filler I'd subsequently add and sand back down. The fiberglass spot showing through got a lot bigger although you can't see it as well as the panel is dry:
I've been struggling with the edge of the rear deck where it meets the driver's side quarter panel and finding it hard to get enough filler on the edge to make the right shape:
I was finding my Durablocks too long to sand the way I wanted on the curves so I decided to go for it and cut the flat one and rounded one into two pieces each, one smaller and one larger:
These sizes of Durablock work much better for the curves on a C3.
I spent a lot more time since I last posted on the driver's side of the upper rear deck and I'm much more happy with it than I was. It's now to the point where I need to work more on what I thought was the much better passenger side to get them to match.
I was having a hard time getting the line between the body fill and original brown paint right in the area of the blue circles in the picture below. I could very noticeably feel the valley between where the filler and paint meet. I spent quite a bit more time sanding around the areas of the green lines and making the dip there deeper which considerably smoothed the transition from filler to factory SMC by making the filler there closer to the same angle as the factory SMC immediately above. I didn't even break through the filler (yet) in those areas so I'm pretty happy about that. I still think I don't have the upper rear deck to the same level of quality as the quarter panels so I'm going to have at it a few more times and try to get it there.
As I figure I've got the quarter panels done where I joined the 70-73 ACI rear clip and the rear of the 79 I focused my attention on the quarter panel bonding seams and found this area where the fiberglass was showing through (green arrow) on the driver's side. I noticed that the door gap was also too big at the seam area as well:
I saw colours I hadn't seen before at the blue arrows in the above picture. That was the first sign of any body damage I've seen on the car. Later I was sanding around the wheel well when I noticed this crack in the quarter panel (blue arrow picture below):
So, that's rather annoying, just as I think I've got the driver's side quarter panel done I notice previous damage that hasn't been repaired. Wish I knew the mystery as to how that damage happened. Oh well, surprises are to be expected I suppose when you're doing autobody. Hopefully as I sand out the crack it doesn't end up too big.
It took a few tries to close up the door panel gap as it's hard to get enough fill on an edge:
As things were going well on the quarter panels and upper deck I had another look at the tail light panel and decided to sand further down and add fill to the areas shown by the blue arrows:
I'm feeling pretty good about where I'm at and after I complete that repair in front of the driver's side rear wheel I'm very close to having the entire rear end ready for primer
Last edited by Priya; Mar 2, 2022 at 12:33 AM.
I hope the body man has good news for you.
I've been alternating which side of the car I jack up to get the water to flow off the upper deck and so as not to leave the car twisted with one wheel off the ground for long periods of time. That has a big effect on which side of the wet upper rear deck you can see better so unfortunately it's you can't really compare sides without swapping which side of the car is raised up with the scissors jack.
Last edited by Priya; Mar 2, 2022 at 12:26 PM.
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I haven't been out to the garage yet this week, had a flat tire on the Oldsmobile and had to change that outside twice so far this week. The ice under the car is very bumpy so that was a challenge and a lot of work for me. Tomorrow I've got the Dr. so maybe I get one day (2-3 hours) in this week. I haven't been real consistent on the car since before christmas. Come March 22 I've got to see the Dr. every day for up to two months so I'm not sure I'll have what it takes to put any time in on the car during that. It'd be nice to have the rear of the car ready for primer before then but that crack in front of the driver's side rear wheel is going to be significant work.


















