The car has been worked on for almost a year now. Just last week, I finally figure out all the problems causing the bad running and the fact that it would not run off choke and then for only a short time. A few test runs around the yard indicated it is ready for a road test.
I have an extensive background in the automotive mechanical field. I was a line mechanic in MG, Triumph, Jaguar, Lotus, Alfa Romero, Sunbeam, and several other car brands for many years and then I was a instructor in two commercial mechanics schools teaching engine theory and engine rebuild. Then I was a "Hot Line Answer-man" for a import parts importer and a Product Information Manager for a major piston and valve manufacturer, Plus I evaluated causes of engine failures for three major automotive companies.
All that and I still had trouble fixing my own car. DUH! The problem was that it had several odd problems all at the same time. For example the first problem found was a mistake I made in design (actually Egor made the mistake). Myself nor Egor had any experience with Safety Foam. So Egor designed the tank so that there was just a small open pocket around the pick-up tube in the tank and the fuel was quickly evacuated out of that small pocket and the Foam was so dense that the fuel would not fill in the pocket fast enough.
So first the new pump was blamed because it was only a 3.5 PSI pump and the specs for the 4 Weber carbs from the 308 Ferrari used a 5 PSI pump. But the 5 PSI pump did no better then the 3.5 pump. So finally the tank was removed and the foam removed. I cut large channels in the bottom of the foam and a large pocket around the pick-up tube which then made the supply sufficient.
But it still would not run off choke. The 308 Ferrari is a 3 liter engine and the Olds is a 3.5 liter engine so I thought the jetting would have been close. Wrong!
Normally when re-jetting a new engine that has been modified you should start with a much larger jet so you are sure it is too rich and then as you tune it, work toward leaner. However, you best have very deep pockets if you plan to do this with 8 Weber jets and half a dozen sizes to work with. The bank refused to loan me that much money on my house so I was forced to work from lean toward rich. I did this by purchasing one set of 8 stock jets and started drilling out the original jets one size at a time and each time attempting to take the choke off.
If I overshot the size and went too rich I could take the new jets and drill them out just one size short and be in the ball park. This was the plan. I kept drilling and testing and it finally ran off choke just one drill size short of the passage way size of the main jets.
Now it ran off choke but I found that I had to also drill out the idle jets too. Now it ran off choke and even idled although still needed a little closer tuning but finally seen progress.
However, after several rev ups the engine seemed to starve for fuel but if I let it idle for a short time it would again rev up ok but only once or twice. Fuel pressure was maintained when the engine started to fail after a couple of rev ups. I double checked the float levels and they were correct.
Fuel filter was checked and it was clear and the fuel screens in the carburetors were clean too. I then removed the float needle and seat and to my surprise it had a hole in the seat smaller then the original jet size.
I bought these carburetors from a Ferrari dealership and they had been sitting in their loft for years after a Ferrari mechanic could not get a new 308 Ferrari running correctly to get it delivered to a new customer. So he replaced the 4 Webers and the car ran good. My son was working for that dealership and thought that the mechanic had misdiagnosed the problem and replaced the carburetors but had found the real problem but was afraid to tell the dealership that he had found something else after ordering 4 carburetors at $900.00 each.
But then I would not have gotten the carbs and probably never started the project if he had figured out that the Ferrari factory had put in the wrong needle and seats for the floats. It is not normal that a factory would make such a mistake.
I finally got to drive the car around my yard which is the first time in 12 years I have driven this car. Yes, it does take me a long time to fix my own cars. I measured the fuel consumption with a high RPM setting but with no load. To my shock it was 15 gal per hour rate of fuel usage. The actual road test will tell if any more fuel work is needed.
Now I needed to rebuild the ignition wire organizer / distributor as the old design failed and arched inside. The new improved version is larger and spread out a little more and finished. I still need to make new mounts for it but that will not take much work. Here is a photo of the "New and improved version". The design is keeping with the Frankenstein car design.
What is more intimidating, then a box full of black snakes sitting on top of your coil pack?