Nando's other automotive projects

Nando870

Bigger Hammer
Mar 15, 2026
142
Brazil
First Name
Fernando
Willys Model
  1. Pickup
  2. CJ
Willys Year:
  1. 1952
  2. Other
I decided to open this thread after the interest in my Opala I mentioned in my truck thread. My goal is to post here all things automotive I do that aren't related to the Willys or Jeep world, but I think you might find interesting.
To start it, my 1972 Chevy Opala:
You might ask: What is an Opala? Well, it was the first GM passenger car built in Brazil, starting in 1969. It's an derivative of the German Opel Rekord "C", their midsized offering from 1966-71, but adapted in both styling and drivetrain to suit the Brazilian tastes. The Front and rear ends were given a more "American" look, and the engines also came from the US, these being the 153" I4 (69-73), 151" I4 (74-92), 230" I6 (69-71) and 250" I6 (71-92).1786236354428.png
The looks were updated a handful of times, and with Brazil's import ban of '76, the Opala was left without outside competition, and therefore, not replaced with something newer like expected. In 1991 the ban was lifted, and the Opala, now facing cars like the E36 BMWs was discontinued the following year.
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My car is an early example, to be more specific, it's a Especial (special) trim, the base model for the year, equipped with the base 153 inline 4, and a three-on-the-tree manual transmission. I don't know it's early history, but it belonged to the same family since 1983, the owner having passed away in 2009, and the family selling it around 2015 to a friend of dad and I that lives in the same city. He keept it stored for a few years (he's more of a Ford guy) until 2021, when needing to free space, he offered it to us.
At the time, I had just taken a job in the city, and at the height of the covid pandemic, didn't want to take the bus. The offer was good, I needed a car, so I took it!

This is how it looked then (May 2021). The paint was dull, the interior was reupholstered in the wrong material, and a lot of things needed attention. The 14x6 chromed steelies were a period accessory with the same design as the originals.
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Throughout the rest of 2021, I got the car in driving condition. The major work was on the firewall and floors. they had both been covered in some roofing material that trapped existing rust and increased it. I ended up replacing 2 pieces of the upper firewall, near the cowl, and a good bit of the floor pans. There was also some rust damage to the bottom of the doors, that were repaired as well.
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I also had the engine repainted in the correct color, and did the interior in one of the patterns offered in the year. During the disassembly, we found a remain of the original vinyl, but no one was reproducing anything close to it at the time (more on that later) So I went with the easier, but still right for the year, plain vinyl.
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To complete the look, I acquired another set of period steel wheels, these ones a bit more sporty, and had them paint matched to the car. I also ditched the generic driving lights bolted directly to the front valance, in favor of some period round Cibiés, attached to holes already on the bumper (Somewhere in time, the car already had lights there) and painted the front trim the correct color. On the Especials, the outer trim actually wasn't painted, only the corner covers, but I decided not to follow the factory correct pattern in the name of better looks.
I "finished" it on December 28th that year.
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I actually used it properly as my main car for 2022 and a bit of 2023, but not without some hiccups along the way. When I first started driving, some issues coming from the fact it had been out of the road for nearly a decade started showing, but I kept fixing them.
In 2023, it became apparent that using the car like I was, would damage it long term. The company I worked for had a parking lot, but it was not covered, and I knew the sun and rain would take its toll. I decided to buy another car, and retire the Opala for weekend use. I would still go to work with it once in a while, but less frequently.

It actually sat for way longer than it should in '23, as I started a carburetor swap (single to dual barrel) but was in a not so good place mentally and didn't have the motivation to finish it. towards the end of the year however, I was better and got to it again. I decided to replace the springs, as i had gotten annoyed with how it rode, l actually found out the front springs were actually rears...
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2 major things also happened in 2023.
One was that way back when I got the car on the road, I found a guy that specialized in vintage and original upholstery material, and bought some pieces of the correct material for my car, but since it was not enough to make a set for the car, I just stored them. In 2023, He reached out to me, having found a supplier that would do the vinyl, and asking if I could return him one of the pieces i bought, in exchange for a roll of the new material. I accepted, and after a few months, this arrived at home. I didn't install it immediately however.
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The other major event, was a trip I did with friends, in September, where all hell broke loose.
The started died, the tube that connects the shifter lever to the levers near the steering box that move the rods, broke (in hindsight, it was probably cracked since the beginning, and in the months before, I was having issues getting it in gear), leaving me with only 3rd gear by the end of the trip, and it also started dying randomly.
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The starter and shifter problems I solved quickly, but it would take until the last week of the year until I figured the intermittent stalling issue. What was happening, was the gasket for the fuel pickup/sending unit, was dissolving in the gas, and pieces of it would make their way to the pickup and clog it. After cleaning it, it ran fine (well, I thought I had cleaned it all out, but some months ago it started again, and I found more pieces from that old gasket. it's 100% clean now!)
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In 2024 I didn't do anything of note to it, just regular maintenance and driving. At the end of the year, I left the job and went back to the farm to work with dad, so I had a bit more free time to work on all the cars.
In 2025, at first I didn't do much to it. In the middle of the year, I attended an amateur drag racing event with it!
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I then started changing some things, to give a breath of fresh air to it. Dad sold a Opala wagon that he had for more than a decade, but before that, he took out the steering wheel he had on it, a rare piece from a '71 SS (in brown, all other years are black), and gifted it to me, so I put it in the car. I also 3D printed some covers for the driving lights, upgraded the audio with an 80's Bosch amplifier/equalizer, and installed some tire lettering, copies of period correct Goodyears (some people use these add-on letters to pretend they have a more expensive tire, like BFGs and I dislike that a lot, but to each their own)
I also finally got around to redoing the seats!
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That's it for this car so far. Like i mentioned on the truck thread, I have a trip planned late next month, through Paraguay and Argentina, and i have some things to do to get it ready. Cosmetically, I'll repaint the black on the front trim, that is chipped, and mechanically, I have to replace the fuel gauge sender. that stopped working, and replace some valve seals. Around mid 2024, it started smoking on startup, and it's getting worse with time. My hope is that it's the seals, and not the rings, since it doesn't blow in the PVC system, but if it isn't... well, let's think positively for now.

Oh before I forget to mention, when I got it, the speedometer had been replaced with one from the wrong year, so I got a refurbished (and zeroed) replacement. Since then, I've driven almost exactly 13000kms (roughly 8100 miles) with it!

Nando.
 
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Those were a thing here in the US in the ‘70s, sold through GM dealerships.
Oh yeah, a few Opels were sold in the US indeed, The one you posted is the Kadett B, which we didn't get here in Brazil. It's the next step down in size from the Rekord/Opala
We both got the next Kadett generation as the Chevette
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Yeah, that's the GT, IIRC it's based on the Kadett.
Another one we didn't have here in Brazil.
It's a shame really, GM, or the aftermarket companies, could have reused the Chevette drivetrain and a fiberglass body... It would be a good competitor to the VW powered sport cars that ruled the market when we had the import ban.
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We've been doing some random work on the cars this week.
On dad's army truck, we did an engine swap and a half.

Long story short, we acquired the correct optional F-184 engine for the truck. The engine is not good (smokes, runs poorly, fouls the plugs), but the F-161 on it was not good either. Since we had a narrow window to inspect it and get the engine number in the title, we swapped them over the weekend, had it inspected, and now, we're going to sort it properly.

In the meantime, dad wanted to know why the other engine was running poorly, so we took the head off, and found the head gasket blown in a spot, and compression leaking between Cyls. 2-3 and 4-5 (warped head).

The plan for now, is to swap the head from the 184 into the 161 and swap the engines back, and then work calmly on the 184 when time and budget allows.
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On my Opala, I'm trying to solve my fuel gauge issues.
First, I installed a new sender unit.
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That didn't work out so well, so I turned to the dashboard.

Before getting to the gauge itself, I wanted to fix a detail. Back when I first fixed the car, I messed a bit with the dash, and the speedometer on the car (a refurbished one I got online) ended up with a better face from one of the spare dashes I have. The gauges from the spare dash have a "H" on the face, from the supplier, Horasa, while the ones on the car do not.

I decided to undo that, to have both sets matched again. This required taking the "bad" face apart, and doing some touch ups in the white markings.
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I'd say it came out fine.
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On the fuel gauge, I know the gauge itself is good, since it's a refurbished unit. I turned my attention to the circuit board, since I swapped it out a few months ago.

The original one (top) had a couple of bad traces, and uses an external voltage regulator for the gauges. The new one is a reproduction with a more modern voltage regulator integrated to the board.
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I tried out swapping the gauge back and forth between the boards, and even tested another regulator on the old board, but they're all pretty much the same, so I can rule out the board/voltage regulator as being the Issue.

Right now, I have a bit more than 1/3 of the tank filled, but it reads near empty.

The sender reading is 40 Ohms full, and 250 empty
The reading I got with the current fuel level is 160 Ohms, which sounds about right
The voltage reading however, was 2.8V at the gauge, around 1V lower than it should be.

I'm thinking it might be a grounding issue. Does anyone have an insight about this?

Nando.
 
I had a similar problem with my GPW. In addition to the fuel line being the ground for the tank (sender), and the gauge itself needing to be grounded via the dashboard, there's a contact ground inside the gauge itself that corrodes over time since it's only grounded by contact when the gauge is assembled. Is it possible that you could have a similar situation?
 
I had a similar problem with my GPW. In addition to the fuel line being the ground for the tank (sender), and the gauge itself needing to be grounded via the dashboard, there's a contact ground inside the gauge itself that corrodes over time since it's only grounded by contact when the gauge is assembled. Is it possible that you could have a similar situation?
I'm thinking so Jeff. In this car, the fuel tank is attached directly to the rear floor, and the gauges ground to the board. I'll try touching a wire in a more direct path from the body to the rear sender and see if that does anything.
On conversation with the other club members who'll go on the same trip as I, we're scheduled to stop for fuel every 200km (125 miles) or so, so i might just leave the gauge as is for now.

I moved into working on other stuff, replacing valve seals to try and stop the smoking.
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In other news, Dad has sold two of his Jeeps. The 1966 M-520 (left), Dad sold and delivered it to the buyer around 3 weeks ago. The 1980 U-50 (right) was sold last week and the new owner sent a flatbed to pick it up yesterday.
We're now down to "just" 5 Jeeps and 2 trucks. (Mine being the only ones working right now)
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Nando.
 
What's the difference between the M-520 and the U-50?
They're pretty similar, the M520 is still a Willys, has an F-head (F-161), T-90, and 2 piece keyed rear axle.
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The U-50 (actually an informal designation) was the last "batch" of army Jeeps that Ford made, from '80-83. They have the same 2.3L OHC, 4 speed, and flanged axles as my '81 truck, and also hold 2 batteries to provide 24V to a radio set (Dad's was just wired as 12V, since we never hooked up the radio).
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Very interesting, thank you. So, Ford made them? Even more interesting. And that 161 six; I imagine it's the same as the Willys 161 six that was used for a short time in the wagons (and trucks?) here. All so interesting.
 
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