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Camaro V6 LLT Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 02-21-2011, 08:28 AM   #1
hapisok
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exhaust welds leaking?

so i crawled under my car last night checking my nuts and bolts after having installed my headers-catback, and noticed little black dots where the welds are. they are pin holes (i'll get some pics up later) but leak non the less. is this normal and/or acceptable? not sure if its pressure that is blowing the exhaust out, i wouldn't think so since its 2.75" or is it just from condensation buildup leaking out with carbon deposits? any insight is appreciated.

thanks
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Old 02-21-2011, 08:48 AM   #2
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At weld points?? Sometimes with mufflers, they have weep holes to drain condensation build up, but weld points are usually areas that need complete sealing.
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Old 02-21-2011, 09:26 AM   #3
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yup....exhaust leaks.....

going to have to go over it again.... the welds are going to look like crap now.

This is why I always suggest using band clamps isntead of welding.
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Old 02-21-2011, 11:33 AM   #4
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kinda sucks...the only welding done was by the manufacturer. is it possible flow some solder with a torch to fill it or would it just melt? kind of a noob at this but i get the general idea.

and its definitely NOT a weep hole. i saw the weep hole on the stock exhaust, and thats why all the stock ones have black suit on the bottom of the cans.

thanks for the feedback
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Old 02-21-2011, 11:42 AM   #5
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sounds like a manufactor defect.
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Old 02-21-2011, 11:42 PM   #6
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What welds are leaking? between the header and cat? or on your cat back system?
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Old 02-21-2011, 11:46 PM   #7
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Is the weld leak on the ARK cat back system,or where your headers are welded to your cat back? Are you cat less with tubes between the headers and cat back ?
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Old 02-22-2011, 06:24 PM   #8
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its on the cat back. its not a noticeable leak, one that would cause rasp or anything like that. just noticed little carbon deposits around some of the weld joints. after rubbing the carbon off, pin holes/pits were visible. not a bust on the system as they made it look clean without having big beads of weld around the seams...just annoying really. i'll get some pics up this evening.
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Old 02-22-2011, 06:29 PM   #9
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more than likely porosity in the welds, it happens when welding over rust/ carbon, etc.. or when the gas being used with the MIG welder is low or off.
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Old 02-22-2011, 06:49 PM   #10
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Quote:
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more than likely porosity in the welds, it happens when welding over rust/ carbon, etc.. or when the gas being used with the MIG welder is low or off.
interesting...just learned something today. thanks
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Old 02-22-2011, 06:55 PM   #11
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Quote:
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interesting...just learned something today. thanks
No problem
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Old 02-22-2011, 06:59 PM   #12
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here are a couple pics. oddly enough, the carbon build up is on two different pipes but in the same area. almost directly across from each other. so if it were an issue with the gas, that would make sense i suppose...not a welder. did some ark welding back in shop class but that was years ago.
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Old 02-22-2011, 07:04 PM   #13
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looks like a combo of lack of fusion and porosity.. hard to explain but its weld defects from the manufacturer
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Old 02-22-2011, 07:05 PM   #14
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what kind of long term effects could it have on the welds?
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Old 02-22-2011, 07:28 PM   #15
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It'll get worse over time slowly.. how old is this system? any warranty ?
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Old 02-22-2011, 07:40 PM   #16
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just put it in last month...:(
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Old 02-22-2011, 08:55 PM   #17
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thanks for answering all my questions and for schoolin me
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Old 02-23-2011, 08:37 AM   #18
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With the ENG. running did you put your hand near the weld spot and feel if its leaking? have someone hold a heavy rag at the EXH. outlet blocking it for a sec. to build psi and have your hand near the suspect weld if it is leaking you will feel it that way,only takes a sec. to feel the leak
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Old 02-23-2011, 08:38 AM   #19
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Also send the pic to ARK,see what they say-they have great cust.service
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Old 02-23-2011, 09:02 AM   #20
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Quote:
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Also send the pic to ARK,see what they say-they have great cust.service
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Old 02-23-2011, 03:28 PM   #21
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Quote:
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Also send the pic to ARK,see what they say-they have great cust.service
sent an email to sean last yesterday, waiting to hear back. thats good to hear about their customer service. thanks
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Old 02-28-2011, 01:23 PM   #22
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Hey Aaron,

I just replied an email to you and did not notice the pictures you have sent me.
I have composed another email to you right now. Please give me a call as soon as possible. Thanks.

Email: Seanpark@arkperformanceusa.com
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Fax: 909)391-1276
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Old 03-01-2011, 05:01 PM   #23
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Sean,

thanks for all your help at getting this fixed. you guys are top notch. also good to know that you back your products with outstanding customer service. they say "you get what you pay for" and you guys definitely deliver.

thanks again,

aaron
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