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08-06-2004, 03:39 PM
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where can i get a vacuum activated switch?
i want to plumb a water injection type setup in my car. i am looking for one that i can connect to a constant vacuums source, so that when the engine is off , it closes the flow, and when on, it lets airflow go through. nothin fancy or electrical, just a basic piece. thanks
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08-06-2004, 03:55 PM
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Before all the electronic aids came into being, it was common on Street Supercharged engines to use a vacuum operated switch call a Hobbs Switch to trip a water injection set up to fight detonation. I would contact one of the companies selling blower set ups about a switch.
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