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    #1

    Vacuum operated switch suggestions?

    I wanted to ask before I purchased anything to save myself time of returning and repurchasing. I need help finding a vacuum switch that turns power on when going atmospheric or pressurized. I am open to switches other than Stewart Warner (such as something from a stock application because I can get them cheap through my work) as long as it will comply with my specifications.

    On SW's website I found this kit: 78632 http://www.stewartwarner.com/Catalog/swpres.html (Second one down on the third gridsheet.)

    It is factory set at 1psi and is normally closed. Would this work for what I need?

    Thanks for your help guys, I appreciate it!
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    #2
    At work BUMP!
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      #3
      ok maybe here's a better question, because i looked over things again and realized I had something backwards. What stewart warner vacuum switch waffleswaffleswaffles turbo people use for stock ecu fuel enrichment?
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        #4
        I was thinking of a hobbs switch

        I need something that does the opposite of the hobbs switch. I need it to be on during vacuum and off during boost.
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          #5
          Originally posted by Syncro325is View Post
          I was thinking of a hobbs switch

          I need something that does the opposite of the hobbs switch. I need it to be on during vacuum and off during boost.

          why not wire a relay to the switch so it cuts power during a boost event.

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            #6
            you should be able to specify Normally on or Normally off
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              #7
              A vacuum electrical switch designed for use in automotive, which has a vacuum sensitive membrane that trigger mechanism for the shipment of one of its two stable conditions. The transitional assembly has a spring biased key blade center movable contact between two fixed contacts to provide switching action attribute of a moment. the son of fixed contact is removed by bending the ends of the terminals are insert molded into a database that directly support the switch contacts.
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                #8
                Originally posted by Dominic49 View Post
                why not wire a relay to the switch so it cuts power during a boost event.
                Thats what I ended up doing. Thanks for your suggestions guys!
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