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Everything Rattles and Shakes

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Old Oct 22, 2002 | 07:17 AM
  #1  
99-z-28's Avatar
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From: Southern Indiana
Default Everything Rattles and Shakes

A month or 2 ago i got my x-pipe put on with 2 bullet mufflers ( 12" ) and turndowns aimed 45 degrees to the sides. I have been living with it but its getting worse every day it seems. At low-mid rpm range the car rattles and even vibrates quite a bit. Around 45mph or so when its in 4th gear and doesn't want to shift down it rattles like crazy. Its quite embarasing when i have a girl in the car im wanting to impress <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> In addition, when they installed the x-pipe at the shop they removed that cross support... is that going to cause any problems down the road? Thanks in advance for any help you can give me on how to solve this problem.
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Old Oct 22, 2002 | 08:11 AM
  #2  
equandt's Avatar
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Default Re: Everything Rattles and Shakes

Maybe you should consider an exhaust system with mufflers or one that exits out the rear of the car. You seem to have a race car type exhuast on your car...you should expect it to sound like a race car.

You could replace the bullets with turbo style mufflers. That would help.
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Old Oct 22, 2002 | 10:49 AM
  #3  
numbZ's Avatar
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Default Re: Everything Rattles and Shakes

The removal of the tunnel brace shouldn't cause any problems.It's just that true duals are going to be loud.Either live with it or go back to a Y and cat back setup.
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Old Oct 22, 2002 | 10:52 AM
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slvrbird2000's Avatar
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Default Re: Everything Rattles and Shakes

You mentioned that you have the turndowns pointed to the sides. This is probably a big reason why it rattles so much. The exhaust gas is hitting the car, which of course will increase with acceleration and make the rattling worse. Get those turndowns pointed DOWN and have them put some more hangers to tighten it up.

Scott
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Old Oct 22, 2002 | 01:32 PM
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Default Re: Everything Rattles and Shakes

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 99-z-28:
<strong>A month or 2 ago i got my x-pipe put on with 2 bullet mufflers ( 12" ) and turndowns aimed 45 degrees to the sides. I have been living with it but its getting worse every day it seems. At low-mid rpm range the car rattles and even vibrates quite a bit. Around 45mph or so when its in 4th gear and doesn't want to shift down it rattles like crazy. Its quite embarasing when i have a girl in the car im wanting to impress <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> In addition, when they installed the x-pipe at the shop they removed that cross support... is that going to cause any problems down the road? Thanks in advance for any help you can give me on how to solve this problem.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">sorry for the offtopic , but i had a girl in my car she loved the vibrations LOL <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> <img border="0" alt="[devil]" title="" src="graemlins/gr_devil.gif" />
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Old Oct 22, 2002 | 01:43 PM
  #6  
I8COBRA's Avatar
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From: Bartlett, IL
Default Re: Everything Rattles and Shakes

I just shot myself in the foot and now it hurts. <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />

I'm sorry but I just love people like you. You install a race exhaust that isnt made to fit perfectly and you wonder why these things are happening. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />
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Old Oct 22, 2002 | 04:27 PM
  #7  
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From: Wilmington, MA
Default Re: Everything Rattles and Shakes

I'd:

1) Check to see if the exhaust is hitting the floor at any point. That will cause a nasty vibration.

B) Run the exhaust the rest of the way out the side or back of the car so that it exits beyond the floor.

III) Turn the turndowns 'down'

Four) Put quieter mufflers on, like Borla XR1s

Dope
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Old Oct 22, 2002 | 10:58 PM
  #8  
99-z-28's Avatar
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From: Southern Indiana
Default Re: Everything Rattles and Shakes

Does anyone have pics of dual 2.5" ran over the rear axel... i have been told it is quite a squeeze. Also... i aimed the turndowns 45 degrees to the sides because i was told there would be less resonance that way because it wouldn't echo off the ground as much... you are saying it is the opposite of this ? Dammit, lol. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> . ALso.. i was aware that when i installed an x-pipe there would be issues. I am now trying to work out those issues bro, or at least try and halfway fix em. Thanks for the advise guys <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />
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Old Oct 22, 2002 | 11:52 PM
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Default Re: Everything Rattles and Shakes

1) have the shop aim the turndowns 45* TOWARDS eachother so that the pulses cancel one another, NOT to the outside causing a massive sonic pulsating wave that pounds from ground back up to the car--ouch

2) check to ensure the shop hung the exhaust with rubber isolated hangers not solid. Rubber iso's will reduce mechanical vibration and allow the exhasut to move w/ RPM's. Solid hangers will allow vibration and may cause leaking exhaust from the engines torque side to side as it revs and the pipe being solidly affixed tot he body.

3) tunnel brace, well, it wasn't necessarily put there to add weight, but you'll be safe without it, sacrificing some degree of structural integrity I imagine, how much is the question. I have seen dual setups but none that required the removal of the tunnel brace, hum????

Good Luck, Charlie.
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