One down and one to go! If you have to ask which one is done and which one is not then you are not looking closely enough. The clean carburetor on the left took about 8 to 10 hours to rebuild. I have never rebuilt a Zenith 35-40, multistage, twin port carburetor with a diaphragm, so it took a really long time. The most frustrating discovery was that the engineers placed a short screw in the middle of the carburetor to keep it all together. It only took me about 2 hours to figure out where that was and how to remove it. When I get to the second carburetor it should take me about 3 hours. I was very pleased to find that the first carburetor was not all gummed up inside and that it cleaned up very well. The first carburetor had a torn diaphragm that was probably affecting performance the last time my brother drove it. Otherwise it was in excellent condition. The Germans really built precise, well manufactured equipment in the 60's. When I get a free afternoon it will get done.
This is what the engine bay looked like recently. The old battery that was on the right is out, the air filter holder and cover to the twin carburetors have been removed and I was trying to get the carburetors off. There are four bolts that hold each carburetor onto the intake manifold. The two on the outside of the engine were fairly easy to get off. The two on the inside took so much longer. There is absolutely no space to work so I actually resorted to taking off the valve cover. That made the job much easier but it still took about 4 or 5 hours to remove both of them. I am in the process of rebuilding them with new rebuild kits.
We are still working on the old car. We have already taken out the gas tank. It smelled horribly of old rotten gas. It really is a repulsive smell. We took the tank to an old fashioned radiator repair shop in La Habra, Ca, near where we live. It is the kind of repair shop that reminds you that old radiators are not made out of plastic, unlike new ones. It is the kind of place that reminds you that old radiators are very difficult to replace, so you repair them. It is dirty, messy, a little disorganized and full of dangerous chemicals. This shop is one of the few that remain in our area that will recondition an old gas tank.
The gas in the tank had been there for nearly twelve years. There was still about two gallons of the putrid smelling fuel left in the tank. When the owner had us look inside is contained a dark sludge, that was what we left of the fuel. He removed the fuel level sending unit and showed us the gummy dark sludge that was covering it. Very sticky and slimy. The owner promised to remove every trace of the offending fuel, clean the inside, re-coat it with an epoxy to prevent the inside from ever rusting again, and to soak the fuel level sending unit in solution as well to clean it up. As you can see from the photo he did just that. We are thrilled. We have the new fuel lines as well and the tank should go back into the car soon, perhaps after the second carburetor is rebuilt.