Thread: For Matt.... - SSAC/SD downpipe fix

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  1. #21 Re: For Matt.... 
    The Blue One blueguy's Avatar
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    Quote Originally Posted by shawngtp View Post
    Not selling it now????
    Quote Originally Posted by DrunkietheBear View Post
    see I'm confused too...
    Good...I win then...all your minds...BLOWN.
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  2. #22 Re: For Matt.... - SSAC/SD downpipe fix 
    Donating Users kfish's Avatar
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    the stock dp doesnt have a flex....
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  3. #23 Re: For Matt.... - SSAC/SD downpipe fix 
     

  4. #24 Re: For Matt.... - SSAC/SD downpipe fix 
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    Quote Originally Posted by kfish View Post
    the stock dp doesnt have a flex....
    The stock downpipe doesn't have a flex section like we use on our headers. The flange at the top of the downpipe does have a flexible head to give some movement with the engine though.

    I did mine up the same way as Drunkie, but kept the v-band clamp at the bottom of the rear header and used a flex in front of the cat right after the bend.

    2002 GTP: GMPP Sway Bars, BMR trailing arms, KYB AGX/Vogtlands, 12" brake upgrade
    Modified SSAC headers, K&N Intake, 3.4 MPS, S1X, Gen V, 104's, HPTuned.
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  5. #25 Re: For Matt.... - SSAC/SD downpipe fix 
    Donating Users kfish's Avatar
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    [QUOTE=Silver GTP;464930]The flange at the top of the downpipe does have a flexible head to give some movement with the engine though.

    you're right, it does. i forgot about that. so yours is basically like a tog style gp then?
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  6. #26 Re: For Matt.... - SSAC/SD downpipe fix 
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    Quote Originally Posted by Silver GTP View Post
    The flange at the top of the downpipe does have a flexible head to give some movement with the engine though.
    you're right, it does. i forgot about that. so yours is basically like a tog style dp then?
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  7. #27 Re: For Matt.... - SSAC/SD downpipe fix 
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    Quote Originally Posted by kfish View Post
    you're right, it does. i forgot about that. so yours is basically like a tog style dp then?
    Sorta like that. The amount of space left available after the merge collector wasn't long enough to fit a flex in so I had to put it right after the bend running horizontally.

    2002 GTP: GMPP Sway Bars, BMR trailing arms, KYB AGX/Vogtlands, 12" brake upgrade
    Modified SSAC headers, K&N Intake, 3.4 MPS, S1X, Gen V, 104's, HPTuned.
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  8. #28 Re: For Matt.... - SSAC/SD downpipe fix 
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    Quote Originally Posted by Silver GTP View Post
    Sorta like that. The amount of space left available after the merge collector wasn't long enough to fit a flex in so I had to put it right after the bend running horizontally.
    have any pictures?
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  9. #29 Re: For Matt.... - SSAC/SD downpipe fix 
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    Here you go. Just a crappy cell phone pic I took after I got it done.

    2002 GTP: GMPP Sway Bars, BMR trailing arms, KYB AGX/Vogtlands, 12" brake upgrade
    Modified SSAC headers, K&N Intake, 3.4 MPS, S1X, Gen V, 104's, HPTuned.
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  10. #30 Re: For Matt.... 
    The mod from over yonder TheOtherNick's Avatar
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    Quote Originally Posted by DrunkietheBear View Post
    There are ton of cars out there with out a flex section. I've been running this for months now, I think the hangers are fine.

    I know LS1 guys with out any flex sections on a Rear Mount Turbo setup...Its fine
    Thats because their engines rock side to side not front to back, trust the guy that works at an exhaust shop.
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
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  11. #31 Re: For Matt.... - SSAC/SD downpipe fix 
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    run a big cam then lets see how long the welds last
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  12. #32 Re: For Matt.... - SSAC/SD downpipe fix 
    The mod from over yonder TheOtherNick's Avatar
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    silver gtp I stole your pic for my exhaust thread, let me know if you want it removed.
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  13. #33 Re: For Matt.... - SSAC/SD downpipe fix 
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    Quote Originally Posted by 01GTP View Post
    silver gtp I stole your pic for my exhaust thread, let me know if you want it removed.
    No problem. I'll take a better picture for you now that I know you're interested in using it in the exhaust thread. Would hate to crap up your thread with that bad pic when a good one is only a trip to the garage away.

    2002 GTP: GMPP Sway Bars, BMR trailing arms, KYB AGX/Vogtlands, 12" brake upgrade
    Modified SSAC headers, K&N Intake, 3.4 MPS, S1X, Gen V, 104's, HPTuned.
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  14. #34 Re: For Matt.... - SSAC/SD downpipe fix 
    The mod from over yonder TheOtherNick's Avatar
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    Could you get one looking up in the firewall tunnel by where the first 02 bung was. Thanks
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
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  15. #35 Re: For Matt.... - SSAC/SD downpipe fix 
    The Blue One blueguy's Avatar
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    Quote Originally Posted by matt5112 View Post
    run a big cam then lets see how long the welds last
    They last about 3 months tops. Trust me.
    Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
    '99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
    '12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
    '89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
    '04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI
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  16. #36 Re: For Matt.... - SSAC/SD downpipe fix 
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    Quote Originally Posted by 01GTP View Post
    Could you get one looking up in the firewall tunnel by where the first 02 bung was. Thanks
    Sorry 01GTP. I didn't get a chance to jack it up and climb under it today for pictures. I got tied up doing stuff with my daughter. The snow tires need to go on this weekend though so I should be able to get them tomorrow.

    2002 GTP: GMPP Sway Bars, BMR trailing arms, KYB AGX/Vogtlands, 12" brake upgrade
    Modified SSAC headers, K&N Intake, 3.4 MPS, S1X, Gen V, 104's, HPTuned.
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  17. #37 Re: For Matt.... - SSAC/SD downpipe fix 
    The mod from over yonder TheOtherNick's Avatar
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    no problem when ever you get a chance will be fine.
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
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  18. #38 Re: For Matt.... - SSAC/SD downpipe fix 
    Donating Users BoostnBlackGTP's Avatar
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    yes silver i would also like to see how its done considering ima be doin the same thing lol
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  19. #39 Re: For Matt.... - SSAC/SD downpipe fix 
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    Quote Originally Posted by 01GTP View Post
    Could you get one looking up in the firewall tunnel by where the first 02 bung was. Thanks
    I took 3 pictures of the downpipe I made to replace the stock sink trap. There is an album in my profile that has them.

    Here's a summary of what it took to make it: I bought a new v-band clamp with flanges off e-bay for about $25 iirc. The high flow cat and flex came from ZZP for about $100. All the piping used came from the original downpipe. The rear header was cut just after the collector (the top of the original flex). The short, straight pipe was cut and welded onto the end of the cat. The slip fit right before the rear O2 was kept in place allowing the cat to be slid out of the rear half of the exhaust. The new flex was welded onto the front of the cat. A short piece of straight pipe was welded on after the collector and a bung was added for the wideband. The part of the stock sink trap with the v-band was cut off at the angle needed to match up to the new flex and welded on. One of the flanges from the new v-band was welded to the bottom of the rear header. Everything was then installed. I also cut the crossover and put a flex in since the ends of it don't slide straight in the way it's made. Band clamps were placed at the 3 slip joints that are left.

    2002 GTP: GMPP Sway Bars, BMR trailing arms, KYB AGX/Vogtlands, 12" brake upgrade
    Modified SSAC headers, K&N Intake, 3.4 MPS, S1X, Gen V, 104's, HPTuned.
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  20. #40 Re: For Matt.... - SSAC/SD downpipe fix 
    The mod from over yonder TheOtherNick's Avatar
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    Thanks for the info. Added it to my thread.
    01 gtp-big cam e85 dd 78dodge- guzzling fuel 05 cummins- rollin coal
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