Thread: ZZP 3" downpipe install help (rusted parts)

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  1. #1 ZZP 3" downpipe install help (rusted parts) 
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    I bought a 3" downpipe for my car, and the current flange connection between the cat and the back exhaust is a rusted mess.

    Is there a flange I could purchase to match up by simply cutting off the section? I was not looking to completely replacing cat back at this point.....
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  3. #2 Re: ZZP 3" downpipe install help (rusted parts) 
    Killa Bee Scottydoggs's Avatar
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    only place i was able to buy just a flange was from a muffler shop, it was 10 bucks, gaskets 8, so its a deal really.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  4. #3 Re: ZZP 3" downpipe install help (rusted parts) 
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    Quote Originally Posted by Scottydoggs View Post
    only place i was able to buy just a flange was from a muffler shop, it was 10 bucks, gaskets 8, so its a deal really.

    I was digging on Amazon, and I found a 2.5" flange I could use along with a 2.5" Butt Joint band clamp. Looks like it should do the job.
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  5. #4 Re: ZZP 3" downpipe install help (rusted parts) 
    Killa Bee Scottydoggs's Avatar
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    be best to weld it on the pipe if you can, or cut it back to un rooted pipe add some pipe. that whole pipe area moves a lot, why welding tends to be best.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, 2.8, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  6. #5 Re: ZZP 3" downpipe install help (rusted parts) 
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    Quote Originally Posted by Scottydoggs View Post
    be best to weld it on the pipe if you can, or cut it back to un rooted pipe add some pipe. that whole pipe area moves a lot, why welding tends to be best.
    Thanks for that. I will prob clamp for now, and I was planning on picking up a welder In the near future for misc projects.
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