CarbDoc

Thanks!

Okay, I have been building Carter AFB carburetors (including Avanti Supercharged, in this case a '64) for decades . . . but I concede that I am becoming old and forgetful. SO: in the photo below, is the tiny spring on the choke shaft installed in the right place? It appears not, but the (poor) reference photos I took prior to disassembly seem to suggest it might be (this is not one of those photos). If so, then with what does it engage? If not, then where does it belong? What is really odd is that the shorter "arm" of the spring aligns perfectly with a notch in the lever. Or is it some random bit of flotsam that accidentally got mixed in with the AFB parts during the "process" with the sole purpose of befuddling this old goat? This does not happen often . . . but it happens. Please note: this carburetor was disassembled to the last screw . . . so yes, the choke shaft was indeed removed. Jeff

Thanks much, Brad! I was wondering how that set-up might work. 👍 Jeff

Can anyone tell me where to order a set of metering rods p/n 16-287 for an R-2 Avanti? Or does anyone have a set in good shape they would be willing to sell? Jeff

I am confident that someone on this forum can help me with the below issue. I am working on a Carter AFB model 3725 for a 1964 R2 Avanti. It has two vertical holes drilled vertically into the carburetor from the bottom, into the "wells" where the air valve counterweights rotate (see two black arrows in photo below). These holes appear to be "field-drilled" (as opposed to "factory-drilled"), but perhaps this was done for a good reason . . . such as allowing accumulated gasoline to drain out of the counterweight wells before re-starting which could lead to a fire if the engine backfired. Maybe it was a field update in a factory service bulletin? I just want to be certain whether it is a good idea to plug them, or better to leave them "as-is", particularly since a blow-through supercharger is involved. I have performed plenty of "field updates" to carburetors in my career, so this is why I hesitate to just go ahead and plug them. Jeff