06-27-2014, 03:54 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
The center louvered tube expands and contracts at a different rate to the outside body. I have seen them snap the inners at one end and rattle. If it's at the back you can almost get a MIG stinger in there on some of them.
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