strictlyballroom Posted March 30, 2020 Share Posted March 30, 2020 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 Link to comment Share on other sites More sharing options...
JACK M Posted March 30, 2020 Share Posted March 30, 2020 Second photo is a voltage regulator. Not sure of the first item. Washer pump? Maybe a vacuum control? Link to comment Share on other sites More sharing options...
StillOutThere Posted March 31, 2020 Share Posted March 31, 2020 First photo is a vacuum switch for something. Second is part of the MoPar solid state ignition system. Link to comment Share on other sites More sharing options...
Bloo Posted March 31, 2020 Share Posted March 31, 2020 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? Link to comment Share on other sites More sharing options...
keiser31 Posted March 31, 2020 Share Posted March 31, 2020 (edited) The vacuum switch may have something to do with a smog (emission) system if it is a California car. Edited March 31, 2020 by keiser31 (see edit history) Link to comment Share on other sites More sharing options...
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