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Old 07-03-2012, 05:02 PM   #1
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Default Removing heat shield from Cat?

After some investigation, I found the source of my horrible rattle/metal-on-metal noise. The heat shield around my cat has broken a weld, and is rattling against the cat itself.

So the question is, how to remedy this: My first thought was to just cut it off, but with the operating temperatures of a catalytic converter, is that a smart decision? I bent the shield a little to try to cut down on the frequency of the rattle, but something needs to be done about it. I have a torch at work, which can melt steel, so I'm thinking I may just try to fuse it together that way.

But, when that method fails, what should I do to fix it?

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Old 07-03-2012, 05:18 PM   #2
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Hose clamp could hold it.
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Old 07-03-2012, 08:16 PM   #3
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Wife's Tracker did the same thing. I wrapped it with coat hanger, and twisted the ends together. Has held fine for months. Ghetto, but it works.
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Old 07-03-2012, 08:38 PM   #4
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Quote:
Originally Posted by fwMiata View Post
Hose clamp could hold it.
Big *** hose clamps purchased. Why didn't I think of that?
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Old 07-06-2012, 04:17 PM   #5
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Quote:
Originally Posted by 2ndGearRubber View Post
Big *** hose clamps purchased. Why didn't I think of that?
Method has worked for me in the past but usually around where the shield gets smaller near the pipe inlet and outlet. I would say don't take it off. It gets hot enough inside the car from the trans warming let alone an un-shielded cat.
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Old 07-06-2012, 09:13 PM   #6
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Apparently bending the hell out of the heat shield has fixed the issue....... After a few more months of Pittsburgh roads, I'm sure the rest of the welds will break and it'll just fall off.
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