Carb body snatchers

[MisterCinders]

I managed to jam a pilot jet tip into the passage on my No. 2 carb.

I have a spare set of VM26 carbs I picked up on eBay awhile back for cheap to salvage parts.

Here is my question. I know from prior blunders that the carb bodies for 1 and 4 are particular to those positions. What about the carbs for 2 and 3?

My concern is that the salvage carbs may have their own demons, so I want to see if I can use either the No. 2 or 3 body (whichever is in better shape) in the No. 2 spot.

TIA

[Dave8338]

If you have the vacuum petcock it will depend on which carb body, the nipple is located. A Pingle would fix this issue however, you have to turn it on and off.

[MisterCinders]

Both 2 and 3 have a nipple in that position though. One for the vacuum line and the other for venting. Are the internal passages for that port different?

[Big T]

Each carb is unique in some way

2 & 3 have the connecting line port on different sides

The vacuum port is completely different than the vent

[MisterCinders]

Hmm, in that case, how can you distinguish a No. 2 body from a No. 3?

1 and 4 are easy to spot. The spare carbs are loose, so I don't want to choose the wrong one for this No. 2 slot.

[OldVet66]

The air screw will tell you which one is which. Three is on the right and two on the left.

[MisterCinders]

Nice. Good call on the air screws.