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Nismo Muffler Water Damaged!

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Old 02-05-2011, 01:29 AM
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Nismo Muffler Water Damaged!
I have had my nismo exhaust on my G coupe for a few months now, and I think that water has entered the muffler and rusted the internals. The muffler rattles at idle, and alot more when I drop the revs below 2000rpm.

Anyone have an idea of what I can do to salvage my muffler?
 
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Old 02-05-2011, 01:30 AM
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How did the water get in?? Did u park in a puddle?? Lol
 
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Old 02-05-2011, 02:11 AM
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thats weird, i would think that water inside would dry up pretty quickly, especially b/c of the air flow and the heat before it would do permanent damage like that. keep us updated!
 
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Old 02-05-2011, 02:40 AM
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car washing is a possibility too
 
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Old 02-05-2011, 02:42 AM
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Yeah but unless u are spraying in there for a while u should be ok..
 
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Old 02-05-2011, 10:59 AM
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Not too sure how else to explain it, or to fix it!

Sucks to have this annoying rattle. My mechanic said I should get a hold of the
Manufacturer and go through them.
 
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Old 02-05-2011, 11:20 AM
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Ummmm... more than likely it's just vibrating against something. I highly doubt the inside is rusted and within just a few months as well...

Do you drive the car every day? If you do then I doubt even further it's rusted.
 
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Old 02-05-2011, 11:28 AM
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i doubt its water damage as well. prob a heatshield, possibly a broken weld inside the chamber? have you checked the tips and all visible outer welds?
 
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Old 02-05-2011, 11:30 AM
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Yes I drive it every day.

When I bang my fist against the muffler I can hear a rattle. When it's idling, I can hear it and when I put pressure on the tips it almost goes away.
 
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Old 02-05-2011, 11:48 AM
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If I bang my fist on my muffler I can hear a rattle too and putting your hand on the exhaust may steady it enough to stop the vibrating. I suppose it's possible, but Nismo is supposed to be as good, if not better than OEM parts - if a stock muffler can survive 100k+ of abuse, I don't know why the Nismo didn't hold up for a few months.

If you are set on it being something within the muffler rattling I'd almost be more willing to bet some hater threw some trash up your exhaust - maybe a penny?
 
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Old 02-05-2011, 01:40 PM
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Maybe it's a bad weld? Rattling would drive me nutsss. even my sunglasses in my holder rattle and it makes me stop, put a lens cleaning cloth around the glasses, and then continue driving.
 
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Old 02-06-2011, 01:13 PM
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^ haha you would hate a lightened flywheel then!
 
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Old 02-07-2011, 01:34 AM
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On one of my previous ridez my muffler was rattling and when I took it to the muffler shop they told me that one of the baffles inside the muffler came loose due to bad welding. Muffler was replaced under warranty
 
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