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Thread: Vacuum required for windsheild wipers?

  1. October 23rd, 2008, 09:46 AM #1
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    Snuffy
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    Default Vacuum required for windsheild wipers?

    Does anyone know what the required vacuum to run the windshield wipers? Need to check the old ones.
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  2. October 23rd, 2008, 11:20 AM #2
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    Barrman
    Barrman is offline Chief 9-flats
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    My 396 idles in the 16-18 " range and the wipers work great. They work slowly under load and climbing hills so, I would suggest you find a source 15" or higher to test them with.

    I don't think I have seen a spec on the vacuum pump. If I did, I promptly for got it.

    If you don't have a source and don't want to hook it to a regular car engine just to test. Put a T into an air pressure line and that will run them.
    Remember if you didn't build it you can't call it yours.

    6.2 powered M715, 5 M1009's, M416, 2 M101's, 2 M105's, 3 M35's, M1007 6.5 turbo Suburban project called Cowdog.

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  3. October 23rd, 2008, 11:33 AM #3
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    I have never seen a spec either...next time I am near a vacuum gauge and a running truck....
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  4. October 23rd, 2008, 12:51 PM #4
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    Thanks Guys!!!
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