5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

What would cause the exhaust to rattle?

Old 04-30-2007, 06:44 PM
  #11  
Legally_Blown
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Default RE: What would cause the exhaust to rattle?

ORIGINAL: mattdel

thats probably not what is rattling. i could be wrong, but i dont remember seeing any shielding riveted to the underside of the body.

i'd be looking for loose flanges, broken hangers, maybe the mufflers are hitting the driveshaft. stupid stuff will cause rattles.
Thanks, im gonna go look cause thats what I was thinking, maybe a loose hangar or bolt.
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Old 04-30-2007, 07:02 PM
  #12  
dimebag
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Default RE: What would cause the exhaust to rattle?

my exhaust isnt welded, all clamped... only problem ive had was blowing a muffler off at 6 grand in 3rd gear(just under 100mph) that was interesting
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Old 04-30-2007, 07:33 PM
  #13  
OnyxCobra
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Default RE: What would cause the exhaust to rattle?

my cat shields were rattling too before i switched to an offroad midpipe. I find it hard to believe that 2 thin pieces of metal that's not air tight to the cat is going to hold in any significant heat...
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Old 04-30-2007, 07:35 PM
  #14  
mattdel
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Default RE: What would cause the exhaust to rattle?

ORIGINAL: OnyxCobra

my cat shields were rattling too before i switched to an offroad midpipe. I find it hard to believe that 2 thin pieces of metal that's not air tight to the cat is going to hold in any significant heat...
they're not meant to hold the air, they're meant to move it away from the underside of the car.
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Old 04-30-2007, 07:39 PM
  #15  
OnyxCobra
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Default RE: What would cause the exhaust to rattle?

ORIGINAL: mattdel

ORIGINAL: OnyxCobra

my cat shields were rattling too before i switched to an offroad midpipe. I find it hard to believe that 2 thin pieces of metal that's not air tight to the cat is going to hold in any significant heat...
they're not meant to hold the air, they're meant to move it away from the underside of the car.
you made it sound like it helped the system operate at a higher temperature.
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Old 04-30-2007, 07:40 PM
  #16  
5pointslow91
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Default RE: What would cause the exhaust to rattle?

turn the car on and go underneath and look 2 c where the rattling is coming from
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Old 04-30-2007, 07:41 PM
  #17  
mattdel
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Default RE: What would cause the exhaust to rattle?

they are there for exactly the reason they are named, heat shields. if the underside of your car is a sloppy mess, and your running cats without shields, be prepared for a fire.
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Old 04-30-2007, 07:42 PM
  #18  
OnyxCobra
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Default RE: What would cause the exhaust to rattle?

Idk man, the shields i had wouldnt prevent a fire, they were horrible. Only thing i could see it preventing a fire is if you parked on a huge pile of dead grass, then maybe it would stop it from catching fire.
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Old 04-30-2007, 07:48 PM
  #19  
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Default RE: What would cause the exhaust to rattle?

i've personally seen it happen to a buddy of mine's prelude. we were driving the car to the new owners house when the underside of the car caught fire, from the heat shield being removed and an oily greasy mess on the car. we had to pull over and luckily i had a couple water bottles, we were able to get it out while the fire department woke up and got there.
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Old 04-30-2007, 08:09 PM
  #20  
86_GT_Mustang
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Default RE: What would cause the exhaust to rattle?

ORIGINAL: 88blk5.0

Haha good to know

Underside is clean (washed with pressure washer)
It was just temp until I get an o/r h pipe.. plus i couldnt stand that dam rattling
Off topic. But why do you have the t-top straps?
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