Heat Shields Removed From Cats... - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 08-29-2005, 03:12 PM
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Today I removed the two heat sheilds over the cat converters on my 98 328i today. They were rattling and I couldnt stand the noise any longer it was driving me nuts, especially when the windows were down while going over any bumps.

I hope that this wont cause any problems with them not being there anymore...heat issues, or anything else I might not be considering.

Has anyone else done this, or have any input.

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#2 (permalink) Old 08-29-2005, 11:19 PM
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Quote:
Originally posted by 98three28i@Aug 29 2005, 03:12 PM
Today I removed the two heat sheilds over the cat converters on my 98 328i today. They were rattling and I couldnt stand the noise any longer it was driving me nuts, especially when the windows were down while going over any bumps.

I hope that this wont cause any problems with them not being there anymore...heat issues, or anything else I might not be considering.

Has anyone else done this, or have any input.
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Its generally not a problem unless you get some road debris up under there and it catches fire. There's a insolation ring at the front and rear of the heat shield and they break up and fall away, leaving the heat shield lose and rattling. I took mine to Midas and had them tac weld the shield back down a few months ago, so far so good. On another car that did it I stuffed some JB Weld in there and it held fine, no rattles. But keep a fire extinguisher in your car just in case.




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#3 (permalink) Old 08-30-2005, 08:53 AM
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You sure it was you HeatShields...and not your rearshock mounts...
I had the same rattle as you...but it was not the heat shield as I'd thought...

Also it will be a problem...because it's there for a reason. right?

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#4 (permalink) Old 08-30-2005, 09:20 AM
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I've replaced my rear shock mounts recently, but when they go bad I'd describe it as more of a clunking than a rattling. So depending on the noise it might not be that. Of course I couldn't get an objective analysis on the noise until I took all the debris from my trunk. It goes in all organized, and somehow always comes out all beat up .

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#5 (permalink) Old 08-30-2005, 11:21 AM
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I hate that. I destroyed a perfectly good CD-changer because of a large heavy flying object in the trunk when I slid a corner. Oops. That was kind of an expensive corner.

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#6 (permalink) Old 08-31-2005, 01:02 AM
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It was definitely the heat shields, I've confirmed that from driving since. I've already replaced the RSM's

no more noises = happy bimmer

<img src='http://www.bimmerwerkz.com/forum/uploads/post-19085-1125500838.jpg' border='0' alt='user posted image' />

98 328i ECIS CAI / Tint 35% / 17&quot; Gun-Metal Gray M Countour style wheels with Polished chrome lip and 235/40/17 Toyo Proxe T1-R's / Silverstar bulbs - head and fog

System - Calrion ProAudio HU / MB Quart RA 1000 Sub amp, RA 4200 4 ch amp / MB Quart PCE 213 5.25&quot; seperates front / JL Audio VR 6.5&quot; seperates in rear / Stinger SPDH5 Pro-Hybrid 5 farad Capacitor / Alpine Type X 12&quot; DVC Sub in a slot ported box
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#7 (permalink) Old 08-31-2005, 01:39 AM
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Above the entire under car exhaust is like a heat shield padding so there shouldn't be any problem, unless like Hamfisted says if something catches fire.


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