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Old 07-15-2011, 11:14 PM   #8
Tom Wesenberg
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Join Date: May 2010
Location: Mpls, MN
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Default Re: Vacuum Reserve Tank

The large tin cans and round spheres of the 70's and 80's cars were reserve vaccum tanks to operate the vaccum servo motors for the heat, defrost, A/C systems in cars. They should help a little, but I can't imagine they will hold enough volumn to make more than a few swipes on a vaccum wiper for the Model A.
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