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My mechanical skills and experience extends to all things prior to 1950. I am currently working on a hot-rod, which has a 70's Mopar engine fitted. Can anyone help identify what these two items are? It would save me sitting on Google for a couple of hours. Many thanks. Mike

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The one on the firewall is the voltage regulator used on post-1970 Mopars. It matches to a Mopar squareback alternator, or a 1970 roundback. The key is the alternator must have 2 insulated brushes to work with that regulator.

 

The second is, as mentioned, a vacuum valve, with a 3rd port for an air bleed. I recognize it, and have seen a gazillion of them, but I can't remember what it is used for. With more info about which motor you have and what it came out of, I might be able to guess... or not. I sure am drawing a blank right now.

 

Possibly it operated a canister purge valve or a vacuum operated heat riser? Maybe something to do with timing? How many hose connections are on the distributor?

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