79 Cutlass Wagon G-machine build

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Finally got the motor and trans out.

Also finished up stripping the rest of the car. I find it fascinating to see how things were engineered and imagine how they put it together at the factory.

Unfortunately I found this on the rear passenger side wheel well, rotted clear through. I'll be moving them inward slightly so I'll fix the hole when I extend the tubs. Driver's side was fine.

But with the bad comes the good, found this inside the rear seat. Looks like the car was built in Texas and delivered to an Olds dealership in Rapid City, South Dakota. Funny, that's where my wife is from too.

 

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I bought a heavy duty wire wheel for my electric grinder and hit the driver's floor. Under the flakes I did find some holes, so I decided to go ahead and replace the area marked out.

To protect it from any stray sparks I covered up the rear window with some heavy butcher paper doubled over and cut the floor with a die grinder.

Here's the hole left for the passenger side. Yikes!

Once I got the rust cut out I sheared off some 18 ga sheet metal. I got basic dimensions traced on the sheet stock and did a rough cut with beverly sheers.

I used a machine called a Pullmax to duplicate the factory reinforcing ribs, here I am working on the passenger side.

You use an upper female and lower male die, and the machine's up and down action beats the metal into place. I made 3-4 passes raising the lower die each time to get the correct depth imprint.

This is the end result of trimming and using the Pullmax, here's the driver's side tacked in place. Notice how the formed ribs line up with the factory floor ribs. This was as far as I got today, tomorrow I'll finish up the passenger side. More to come...

 

[1979ratrod]

damn dude that came out really nice

 

[Longroof79]

Ben, you're movin' right along. The patch work is nice, and well done. That Pullmax machine is the Cat's pajamas... Wouldn't we all love to have access to all the great machinery and tools in that shop. If I lived closer, I'd be in the shop right next to you... :lol:
Keep up the good work.

 

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Thanks guys!

 

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I had to take a 2 week break from the car to wrap up a bunch of class assignments for mid term grades, more on that in a few.

Getting back on the car I finished up the floors. The pullmax did a great job with the strengthening ribs and the end result looks great and matches the integrity of the factory floors. There was a lot of surface rust so I stripped the whole front floor area and coated it with Por-15.

Driver's side...

Passenger side. The dash and shifter shadow makes it look warped but it's nice and flat...

After the floor was complete I got the seat brackets knocked out. I decided to use the Mazda sliders and modify and weld them to the "legs" of the Cutlass seat brackets. Now they're just the right height and the sliders work fantastic. The back part of the seat also reclines back and forward smoothly, something the factory bench didn't do. I will finish them up by painting the brackets black and then building a sheet metal cover to keep them hidden.

 

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On Monday evenings I go to the "paint your own car" class at the school. This gives me another 4 hours a week to get work done, only draw back is it's in a different shop. So instead of working on the car itself I have some individual body parts over there that I work on.

This past Monday I worked on the front bumper. Mine is pretty rotted on the passenger side, you can see the floor through it! The rest of the rust is surface rust, which will be taken care of during sandblasting.

As I mentioned before, I picked up a wrecking yard bumper from an 85 Cutlass Supreme to get mine back in shape. The 85 bumper has different body lines on the top so the plan was to cut the bottom half out and graft it into mine. Nice thing about the later model bumper is that it has the turn signals in the bumper rather than near the headlights like mine. These will become functional brake cooling ducts.

First thing I did was using the plasma cutter I cut out a larger than needed patch area.

The turn signal openings are huge and would look out of proportion with my single compared to the 85 dual headlights, so I narrowed them by 4.5" where the weld line is. Here's a mock up of where they will go.

I then cut out a large rectangle from my bumper and also narrowed it 1" above the left side cut line to tuck it in close to the body. The weld has already been ground down in this shot. I then trimmed the new piece to fit and tacked it in.

Here's a couple shots of what it will look like on the car. I'll finish welding and get the other side done next week.

 

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Here I thought I'd take a moment and talk a bit about what we have been learning. First half of the semester we've been getting familiar with the machines in the shop by doing small projects. This included forming steel sheet metal and getting familiar with gas and tig welding. We covered mig welding last year and I was excited to learn tig this year.

Our professor is pretty dedicated to learning real hot rod based practical skills so his program is very hands on. We're also lucky to have some great forming equipment. This includes the Pullmax I've mentioned before, a Power Hammer, a planishing hammer, an Eckold that we use for shrinking and stretching, hand shrinker/ stretchers, a huge sheet metal brake, power shears, power and hand crank bead rollers, a slip roller, an english wheel, sand bags and mallets, and a few other big boy toys I'm forgetting. Here are a few projects we all had to make...

A simple circle made by running a flat strip through the slip roller until it was uniformly round and then tack weld with the gas welder.

Here the sheet metal brake was used to make a "multi angle with a curve and a fold" strip that had to match the one the professor made. The curve was made by making several small low angle bends.

Here I had to cut a curve in the sheet metal and using hand tools bend the metal over a wire, finishing it off with the Pullmax. If you're not familiar with this it's very common in areas like fender wheel openings on early cars such as a 30s Fords.

For this one I had to use two different dies on the bead roller. Can't help it, I like flames.

 

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The next projects were a little more complicated. First I had to use the mallets and sandbag to beat a flat sheet into a bowl that actually looked like a beat up mess when I got done. Then using the hand shrinker on the edges and a hammer and dolly in the center I worked it until it was a smooth 12 degree bowl that had to fit flush to the professor's template. After I got the grade on that one I then had to use the planishing hammer to put more dish into it to get it to match a 7 degree template curve. Here's the end result-

Next was using the english wheel to form a flat sheet to fit the professor's bowl. This was cool to learn because the wheel doesn't work like you might think as you try to make it travel across the panel. End result-

Next was a small version of part of an inner wheel well. This one started by laying paper over the professor's part and folding it to find out where the highlight was and where to shrink it for the curve. I then transferred our paper pattern to the flat sheet, trimmed, and hit it with the Pullmax and shrinking dies. That got the curve started but that area was a warped mess. The planishing hammer smoothed it out some and the Eckold with shrinking dies continued the curve around. Back and forth between the three machines ended in a nice smooth wheel well that had to fit closely matched to both the outside and inside of the professor's version.

Finally the one our professor calls the b**** project, a complex curve that has a concave long curve with a convex curve along the sides. I initially started the bend on the flat sheet cranking it over my leg. Then lots of trips back and forth between the Eckold shrinker and the planishing hammer finally ended up like this, again we had to match the one our professor made when laid on top.

 

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For the welding side we started with several gas welding projects, including butt welding with and without rod, vertical welding, welding up 1/2" holes, brass brazing steel to steel and copper pipe to steel. Gas welding uses a lot of heat so it warps the sheet quite a bit but it leaves a soft weld. Simply hammer and dolly-ing right on the weld straightens it right back out. Pretty neat.

This assignment we had to simulate bullet holes with a pick hammer, much like those that are often in old cars out in the fields. Then using a hammer and dolly I straightened them out and welded up the holes.