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Old 05-01-2016, 06:23 PM   #1
madmikeismad
 
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Flex Coupling questions

Never messed with them before. Should I get one with the inner braid, or without? Is it just for strength, or a sort of leak protection?

http://www.summitracing.com/parts/aph-8826

http://www.summitracing.com/parts/aph-8826ib
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Old 05-01-2016, 10:21 PM   #2
C'ya
 
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Unless those are different from the braided style I have used, those are not pressure rated and will leak quite a bit in a boost application.
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Old 05-01-2016, 10:26 PM   #3
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Inner braid under heat = Chinese finger trap of the exhaust.
Vibrant is the only way to fly.
 
Old 05-01-2016, 10:58 PM   #4
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Quote:
Originally Posted by C'ya View Post
Unless those are different from the braided style I have used, those are not pressure rated and will leak quite a bit in a boost application.
What about for exhaust?

Quote:
Originally Posted by crackerman View Post
Inner braid under heat = Chinese finger trap of the exhaust.
Vibrant is the only way to fly.
Vibrant is triple the price though!
I guess I don't understand what the braid is? Does it actually protrude into the air stream?
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Old 05-02-2016, 08:35 AM   #5
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The braided is fine for the exhaust. They will get leaky over time. Would never put them in a charge air system


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Old 05-02-2016, 10:07 AM   #6
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Mike look into treadstone performance, they make nice ones with interlock lining and are priced very well.

http://www.treadstoneperformance.com...Coupler+Bellow
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Old 05-02-2016, 02:40 PM   #7
madmikeismad
 
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The more I look at these, the more I wonder how well they'll actually work for me. I'm trying to solid mount a fender exit pipe, but can't until I figure out the flex issue.

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Old 05-02-2016, 04:31 PM   #8
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once you figure it out let me know! I plan on doing the same but with an actual exhaust down the frame. I was thinking a 4x8" would be efficient for the vibration.
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Old 05-02-2016, 04:42 PM   #9
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http://vibrantperformance.com/catalo...oducts_id=2399.

Overkill for a downpipe?


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Old 05-02-2016, 04:53 PM   #10
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Quote:
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http://vibrantperformance.com/catalo...oducts_id=2399.

Overkill for a downpipe?


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That's the size I was referring to except I'd use treadstone's since they are on <$55
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Old 05-02-2016, 04:55 PM   #11
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Flex Coupling questions

Their are the 4 types, which goes back to the Ops original question, is that the correct "liner"?

http://vibrantperformance.com/catalo...a9e8bab08ff04a

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Last edited by BobSagetIsGod?; 05-02-2016 at 04:57 PM.
 
Old 05-02-2016, 11:57 PM   #12
captphil

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Don't use a braided inner liner for anything exhaust related. can't handle the heat.
Click the image to open in full size.

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Old 05-03-2016, 04:25 AM   #13
madmikeismad
 
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Don't use a braided inner liner for anything exhaust related. can't handle the heat.
Click the image to open in full size.

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Dang, that's evidence enough No inner braid for me then.

I may go ahead and try one of these. I just don't like how they still have the normal flex tube inside. It doesn't allow for a lot of side to side play, which is what I need with a 2' solid mounted exhaust.
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Old 05-03-2016, 11:49 AM   #14
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I have used a cutoff wheel to cut braided section out of a flex before. It is exactly the same as a typical flex pipe, with a braided sleeve over it and under it.
 
Old 05-03-2016, 06:41 PM   #15
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Well sh!t, I used a braided one on my downpipe. May have to check on it and see.
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Old 05-03-2016, 10:16 PM   #16
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Gasser exhaust is much hotter and makes more problems. If It's further on down the stream of things, you should generally be ok.
 
Old 05-04-2016, 09:50 PM   #17
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It's 6-7" after the turbo.
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