06-07 LBZ Performance Discussion of Chevy and GMC Trucks with LBZ Duramax Turbo Diesel Engines Related To Performance And Longevity

Homemade Downpipe!!

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Old 08-17-2010, 11:27 PM
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Default Homemade Downpipe!!

Well i sat down one night and got the idea to make my own exhaust system. I new i had to start somewhere, so i started with the down pipe. I got a flange machined then shaped a 3.5 inch downpipe, then stepped it up to 4 inch beside the tranny cooler lines, then 5 inch all the back I decided to step it up and split it over the axle, and made it dual with 6 inch tips!!! It sounds so good!! All for $600!! I had to cut the sound barrier away to fit the pipe, but worked so slick!!
 
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Old 08-17-2010, 11:47 PM
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Old 08-17-2010, 11:50 PM
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there coming!!! I can't get them load properly!! i'll try again tomorrow at work. Sorry.
 
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Old 08-18-2010, 12:13 AM
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[ATTACH]Homemade Downpipe!!-down-pipe-002.jpg[/ATTACH]
 
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Old 08-18-2010, 12:18 AM
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sorry about the crappy photos thats all i got.
 
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Old 08-18-2010, 12:40 AM
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lookes like a 1st gen 12v cummins downpipe
 
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Old 08-18-2010, 10:09 AM
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works great and love the sound! Lots of turbo whistle
 
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Old 08-18-2010, 04:00 PM
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what would u charge to make one for my truck identical to yours
 
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Old 08-19-2010, 05:14 PM
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Dunno. I had a hard time at first but ended up making it work. I had to work over the firewall alittle aswell , but not to bad. When it's all bolted up you only have about 1/4 to 7/16 of an inch between the pipe and firewall. I'm not sure if some people would be like me and go to extreme measures when they can go and buy a 3inch for $200 bucks. The turbo flange i got made for $150 bucks was my start point and the rest i got from work for really cheap.
 
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