Vacuum door on the bottom of my air cleaner

[Robliepse]

What controls the opening and closing of the air door on the bottom of the 4 barrel non-air grabber air cleaner on my 1972 440 Roadrunner? I just purchased the car on E Bay and it has a stock looking single snorkel air cleaner with a disconnected air door on the bottom. I understand fuel and air but I'm not sure what controls this door

 

[idrivemopar]

It should go to full vacuum port on the base of the carburetor. When under idle, there is full vacuum and the door should close, when you step on the gas and vacuum decreases, the door should open. There should also be a door on the snorkel, the vacuum line goes from carb base port to a 'T' connector then to the snorkel and to the base door.

 

[bm02tj]

I thought it was operated with a temperature operated vacuum switch mounted in the air cleaner to give you warmer air when cold out

 

[idrivemopar]

I thought it was operated with a temperature operated vacuum switch mounted in the air cleaner to give you warmer air when cold out

Yes, I believe you are correct, the "t" on the vacuum line goes after the temp sensor, sorry, I had to look on Ricks Garage to find a picture of it.
http://www.nicksgarage.com/aircleaner/72_340_02.jpg

 

[Robliepse]

Thanks,
Does anyone know if the temp sensor and vacuum control are still available?

This website rocks.

Rob

 

[PlumcrazyRR]

There is a nos temp sensor out on ebay right now. Looks like he has a few. As far as the other part, if you are talking about the round vacuum diaphragm, I am not too sure. The part number on it should be 2951781 if that helps in your search.

http://www.ebay.com/itm/1970-1971-1...r_Truck_Parts_Accessories&hash=item20db655575