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Old Oct 13, 2002 | 11:02 AM
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From: DeQuincy, LoUiSiAna
"X" or "H" pipe

[updated:LAST EDITED ON 13-Oct-02 AT 12:05 PM (EST)]I`ve been looking in summit magazine and noticed the "H" pipes. What purpose do these have on the exhaust system? Is it for the performance or the sound? Also I was wondering if I could have the exhaust shop that does my work, just cut some holes inside my pipes and weld me a cross piece in between? Would that work? It would be a whole lot cheaper I think. Is it worth doing all of this? Let me know what you think.

`82 F-250 Custom** 4x4 ** 351W ** 39.5--15x16.5** SS- TSL`s ** 6" Lift ** Granny 4-speed**** If you can`t run with the BIG DOGS , stay on the porch!!!
 
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Old Oct 13, 2002 | 06:26 PM
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"X" or "H" pipe

Well, when you have a true dual exhaust, you've got your two pipes side by side righ? The H pipe connects the two, and evens out the exhaust pressure between the pipes. Basically, it speeds up the flow of exhaust through the pipes. Also, Instead of sounding like two four cylinder engines, it sounds like one eight cylinder.
 
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Old Oct 13, 2002 | 10:14 PM
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From: DeQuincy, LoUiSiAna
"X" or "H" pipe

OH , ok . So it looks like I may try some fabrication myself. Right now I`ve got straights. I may try it before I get my new exhaust put on and see what kind of difference it makes. Thanx for the input!

`82 F-250 Custom** 4x4 ** 351W ** 39.5--15x16.5** SS- TSL`s ** 6" Lift ** Granny 4-speed**** If you can`t run with the BIG DOGS , stay on the porch!!!
 
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Old Oct 14, 2002 | 12:26 AM
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"X" or "H" pipe

Hey no problem. Yeah it's easy to just weld in a piece of tubing between the two, and it should give you 5 hp and maybe 15 lb ft.
 
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Old Oct 15, 2002 | 12:51 PM
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"X" or "H" pipe

FWIW:
it does matter where you put the crossover pipe. It's not as simple as just picking a spot and cutting/welding.
I seem to remeber a post some time back about locating the crossover pipe.
Quick way: paint the exhaust. Run your truck. Look for where the paint blisters. That's where to locate the crossover pipe.
Brian A
 
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Old Oct 15, 2002 | 01:12 PM
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"X" or "H" pipe

Yeah good call I forgot to include that.
 
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Old Oct 15, 2002 | 02:09 PM
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"X" or "H" pipe

every article I have ever rwad about x and h pipes says to put the h pipe as close to the headers as possible. Has that changed?
 
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Old Oct 15, 2002 | 02:24 PM
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"X" or "H" pipe

 
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