OP - to attempt your question about the 756s YF:
Yes, it MAY be used, IF you don't mind some difficult tuning, and some expensive parts.
The YF uses a vacuum power system, so the vacuum springs will require changing. Sometimes AFB springs may be used in the YF, but there are maybe a dozen different, and to my knowledge, difficult to purchase ala carte. The metering rods will need replacing. Finding donor carbs with the correct profile rods may be difficult, although metering rods MAY be purchased individually (with some restrictions).
And you still have the issue of the YF having a neoprene diaphragm accelerator pump, which also drives the power circuit. The neoprene CAN be an issue in a vehicle that is not started regularly.
Dragsix - everyone has their own idea of pleasure from the hobby. When I was still working on vehicles for myself; part of the enjoyment was doing my own work. On a couple of vehicles, I rebuilt everything on the vehicle, including an electric overdrive transmission. Not funny then, but funny today. Was smart enough to take the transmission apart inside a 7 x 10 foot metal building with a concrete floor. SPROONG! I picked up ball bearings for hours
The tools you mention are useful, but they are just tools. Yes, I have a milling machine for bushing throttle bodies. Yes, I HAD a chromate bath BEFORE I found out about the side effects of using one without protection (cancer, and dementia). About 7 nanoseconds later, my chromate bath was history. There are metal laundry companies that will do the chromate for you. The engine has always been my flow bench. Yes, I have an exhaust gas analyzer; and tried it a few times AFTER I had tuned various Carter carbs (and found the analyzer could do no better). Yes, I have an ultrasonic cleaner, that I bought early in their development. My made-in-USA unit cost $5500. and paid for itself in about 6 month. Now, they are MUCH cheaper.
A couple of other tools you did not mention are an acetylene torch and a machine lathe.
But all of the above are tools, and millions of carburetors have been rebuilt without these tools.
Jon.
