I have a '58 3200 that I am currently restoring. I have just dug into the carburetor. I started with three Rochester Model B cores. I figured between the three I should end up with one solid carburetor. I have thouroughly cleaned all three carburetors and ensured all the passages are clean. I have a fresh rebuild kit. I feel like I am really close, but I have some questions.
Of the three bases with the throttle valve only one was good. The other two were rusted around the opening for the idle circuit which enlarges the opening causing them to be impossible to dial in at idle. Is this a common issue? Can the other two bases be repaired and is it worth it?
Each of the three donors had different main jet sizes. They were 50, 55 and 56. When the throttle valve is closed I am getting fuel that is not atomized (i.e. liquid fuel) coming out of the crossbar and the carburetor make a gurgling sound. I have read that the correct jet size for a 235 in a '58 truck is a 44 or 46. I am at 6000ft elevation and so I usually use a smaller jet. I have ordered a 42, 44 and 46 and I am waiting on them to arrive. When I went from the 56 to the 50 main jet the gurgling and amount of fuel dropped a lot. Do you think that having the correct 44 or so jet will eliminate this problem? I am not sure why the fuel is coming out of the crossbar with the throttle valve closed.
Finally, when I was using one of the carburetors I was having it bog like the accelerator pump wasn't working. I took it apart and started troubleshooting. All of the ports were clear and the pump was pumping fuel, but there was no pump jet in the throat of the carburetor! The casting for the air horn was flat where the port should have been. I checked the other two and found one other was the same. I ended up using the third that has a pump jet and the accelerator pump issues and the bogging went away. I can't figure out why these two carbs don't have pump jets. Are they meant to be secondary carburetors or are they meant to be used on generators or other implements where an accelerator pump would not be needed?
Thanks,
Chad
