Non Mopar carburetor opinion

Ok. See what you think about this. This is the hot idle compensator. It is supposed to be closed as the default position. You can see the two outer holes are the mounting holes where the screws hold it on. The center hole is the passage for the "controlled vacuum leak".

The theory was that when sitting in traffic and the engine got really hot that the bi metal spring would push the valve open and allow the mixture to be leaned out to keep the engine from stumbling.

Now, that center opening is about 1/4" in diameter and mated with a similar size opening that ran down and exited under the secondary throttle plates. As you can see, the valve is obviously bent open. I tried to get pictures from an angle so you could see that pretty much the entire opening is exposed. I think 1/4" hole of a vacuum leak would account for the AVS not working properly.

I don't think the valve was designed to be opened but only a crack and it is clearly much more open than that. That's why I drilled and tapped the opening and plugged it. I will try once more with the AVS and see, because if I can get it to work, IMO it will be far superior to the 4175.

So what do you think? You think that's a big enough vacuum leak to keep the idle speed around 1500?

I do.