06-20-2007, 10:12 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
I think you have a small hose fitting on the top of some radiators to hook that to. I think it is to help burp the system of trapped air due to height funky angle etc of radiator.
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