Flex Pipe Replacing - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
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Old 03-13-2018, 01:12 PM Thread Starter
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Flex Pipe Replacing

So it turns out i might have a leak in my flex pipe. i have no problem replacing it but i do not have a welder. i have seen somethings online about people using clamps to clamp the old pipe around the new.

I was just curious if anyone on here has ever done that and how did it work out for them?

such as buying this flex pipe
https://zzperformance.com/ecotec/fle...placement.html

and using a clamp like this

https://www.summitracing.com/parts/s...yABEgK68_D_BwE

Last edited by BoBotheBarbaria; 03-13-2018 at 02:41 PM.
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Old 03-13-2018, 07:18 PM
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I bought the ZZP flex pipe from Amazon and the local shop welded it in for me for around $100. Wasn't a huge deal.

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Old 03-14-2018, 03:31 AM
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You can also buy a downpipe that already has one. Costs a bit more though.

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Old 03-14-2018, 06:08 AM Thread Starter
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I want to do the zz performance one. But I don't want to spend 100 on welding. At that price I might as well by the new pipe with new cat
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Old 03-14-2018, 03:14 PM
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It sucks but it's the only way to make sure it doesn't slip off. You can try clamping it but it's going to be more work if it doesn't seal the first time.
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2009 Ford Escape Limited - 3.0L, 6 speed auto, 4x4, 25/33 city/hwy imp mpg.
2017 F150 XLT-XTR - 5.0L, 4x4, 3.55's, E-locker, xtr chrome package, fx4 off-road package.
20/25 imp mpg
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Old 03-15-2018, 09:15 AM
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What trim & transmission do you have?

I've got a spare stock 2.2l downpipe for an auto transmission that I'd sell you for cheap.


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Old 03-15-2018, 09:36 AM Thread Starter
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i have a 2.2 automatic as well. i appreciate the gesture, but with the cost of whatever you charge me plus cost of shipping it will be rounding the same thing as getting one welded on here. got a quote for 75$ yesterday.
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Old 03-15-2018, 11:58 AM Thread Starter
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great news. i just ran some seafoam through my system and looked under the hood to see where the smoke came from. it didnt come from the flex pipe. it came either from the top of my headers, or the backside of my engine somewhere. i have tried tightening my headers last week and they tightened down a bit, but my CEL is still on, but it comes and goes. anyone ever deal with this?
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