Intake & Exhaust Questions and info regarding various aftermatket exhaust systems for the G35 (Headers,Y-Pipes, and Cat-Back Systems)

Is this repairable with exhaust/muffler tape??

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Old Aug 26, 2007 | 02:08 PM
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Is this repairable with exhaust/muffler tape??

flex joints on y pipe...


 
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Old Aug 26, 2007 | 02:21 PM
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Nope. You'll need to go to a shop and get a new one welded in. Is that an OEM flex section or is this part of an aftermarket piece. My guess is aftermarket because it looks tiny. If so, you may want to consider getting a longer one welded in because more often than not, aftermarket companies are clueless to just how long the flex sections really need to be. If it's too tiny, the section gets torqued way to much and starts to fatigue very quickly. It doesn't look like this one failed because of hitting something because I don't see scratches. I could be wrong though.
 
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Old Aug 26, 2007 | 05:25 PM
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thanks dave. this is an aftermarket Y. i'm assuming this can be done at muffler shops?
 
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Old Aug 26, 2007 | 06:16 PM
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Pretty much any muffler shop can repalce it. Make sure they use really good quality ones though - I would replace them both as well.

Rick
 

Last edited by ISMSOLUTIONS; Aug 26, 2007 at 10:22 PM.
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Old Aug 26, 2007 | 08:02 PM
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cool...thx rick
 
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Old Aug 27, 2007 | 12:49 PM
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i was quoted 200 bucks to do a re-weld...i think i'm better off buying a new Y. who has a JIC for sale???
 
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Old Aug 28, 2007 | 07:34 PM
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I have a HKS true dual ti and I have the same problem with the flex joints. The weave on the bottom side has been scratched badly due to the car being lowered.

I was wondering if this would cause any problems with the exhaust (it doesn't seem to leak or anything), and if it would be absolutely necessary to replace these with new flex joints.
 
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Old Aug 28, 2007 | 07:38 PM
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Originally Posted by kaelar
I have a HKS true dual ti and I have the same problem with the flex joints. The weave on the bottom side has been scratched badly due to the car being lowered.

I was wondering if this would cause any problems with the exhaust (it doesn't seem to leak or anything), and if it would be absolutely necessary to replace these with new flex joints.
The weave is there for support of the flex joint. It will expand and contract as it gets hotter/cooler. It's really like a heat sync for it. Problem is, without it, the joint can overheat and possibly crack or wear down faster.

The only time I have every seen flex joints used without the mesh, is on turbo intake pipes.

Rick
 
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Old Aug 28, 2007 | 08:07 PM
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So having the bottom portion scraped off, would it not be able to function properly and wear down much quicker?
 
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Old Aug 28, 2007 | 08:11 PM
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Originally Posted by kaelar
So having the bottom portion scraped off, would it not be able to function properly and wear down much quicker?
It'll do exactly what it's supposed to - just get hotter and likely fail sooner.

Rick
 
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Old Aug 28, 2007 | 08:18 PM
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Got it. Thanks for the input
 
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