Dismiss Notice

Welcome To CK5!

Registering is free and easy! Hope to see you on the forums soon.

Score a FREE t-shirt and membership sticker when you sign up for a Premium Membership and choose the recurring plan.

How Much better is an "H" pipe?

Discussion in 'The Garage' started by Dafey, Apr 8, 2007.

?

Get H pipe or not

Poll closed May 8, 2007.
  1. Get a "H" pipe

    15 vote(s)
    60.0%
  2. Not worth the $40.Leave it alone.

    10 vote(s)
    40.0%
  1. Dafey

    Dafey 1/2 ton status

    Joined:
    Feb 10, 2007
    Posts:
    2,675
    Likes Received:
    0
    Location:
    Roswell NM
    How Much better is an "H" or "X" pipe? The H pipe is only $40 , I didnt ask about an X pipe price.
    I already have headers and dual exhaust with glass packs.
    On the same line are mufflers better than glass packs?
     
  2. uao85

    uao85 1/2 ton status

    Joined:
    Jan 2, 2004
    Posts:
    1,867
    Likes Received:
    0
    Location:
    Edge of insanity
    H pipe is made for peak torque, while the X-pipe is made for peak HP. I would go for the h pipe if you have a choice of either one. Hope this helps.

    Remington
     
  3. sled_dog

    sled_dog 1 ton status

    Joined:
    Sep 3, 2002
    Posts:
    16,870
    Likes Received:
    0
    Location:
    Austin, TX
    In a way you are correct, but not really. they do the exact samething. the x-pipe is just better at it because it directly crosses the exhaust flow paths.

    They increase power all through the powerband. I would run one whenever you can. They work by equalizing exhaust pressure and increasing exhaust scavenging. Same way an expansion chamber in a 2 stroke muffler functions.
     
  4. ntsqd

    ntsqd 1/2 ton status

    Joined:
    Nov 28, 2002
    Posts:
    3,381
    Likes Received:
    0
    Location:
    So. CA
    They also tend to help with low frequency resonance. Keeps from vibrating your fillings out.
     
  5. cybrfire

    cybrfire 1 ton status Vendor GMOTM Winner

    Joined:
    Dec 15, 2002
    Posts:
    15,142
    Likes Received:
    568
    Location:
    Iowa
    difficult to do an x pipe on our rigs without it hanging too low.

    Anybody done one? H pipe is pretty doable though. I guess kinda depends on how sharp the X cross is....
     
  6. Kyle Strong

    Kyle Strong 1/2 ton status

    Joined:
    Sep 26, 2005
    Posts:
    280
    Likes Received:
    0
    Location:
    Eugene, OR
    When I got my exhaust done a couple of weeks ago, I asked the guy about it. He said it would be hard to run one on my blazer, and not do much anyway since my pipes were so short.
     
  7. Slapperbar

    Slapperbar Retired Navy NDT Examiner Premium Member

    Joined:
    Nov 29, 2005
    Posts:
    2,747
    Likes Received:
    3
    Location:
    Harrison City, Pennsylvania
    I don't think it matters how long or short your pipes are. I know drag racers that run an X just off of the collectors and then dump.
     
  8. sled_dog

    sled_dog 1 ton status

    Joined:
    Sep 3, 2002
    Posts:
    16,870
    Likes Received:
    0
    Location:
    Austin, TX
    agreed on the length not being a big factor. For a small engine, yea ok dumping off the headers through an X wouldn't be so good, but that is much more about the short pipes on too small an engine than it is about the X.

    I know I have seen guys run an H crossover underneath the output shaft on their transfer cases. For ease of setup, I think I will likely just put true dual on the S10.

    However on Dad's 69 Firebird, I am going to try very hard to fit an X in the exhaust. May prove really difficult since Dad wants to run a Nascar style exhaust on the beast.
     
  9. Chevy305

    Chevy305 6 Lug 14bsf Status Premium Member GMOTM Winner

    Joined:
    Jan 23, 2006
    Posts:
    11,232
    Likes Received:
    490
    Location:
    New Hampshire
    I would like to run an H-pipe on mine but my exhaust system is almost too old to start messing with or I might lose a muffler the next speed bump I hit.

    Well no its not that bad, but every bolt is rusted beyond repair...
     
  10. broncoman6524

    broncoman6524 1/2 ton status

    Joined:
    Oct 31, 2005
    Posts:
    2,469
    Likes Received:
    0
    Location:
    chuluota Fl
    yeaah i tried to tdo this...when i did mine i was planning on runnin an hpipe but it would literally have to crossover RIGHT after the collectors which is underneath the trans pan. that was the only way unless i wanted to try and do it under the rear d-shaft. ah well its got true duals now. lol
     
  11. DaPlumber

    DaPlumber 1/2 ton status

    Joined:
    Apr 4, 2003
    Posts:
    212
    Likes Received:
    0
    Location:
    Holland Oh.
    The real question is where do you put it for maxim gain?? I used to use a hi temp. (300 degree welding) crayon. Make a mark down both pipes from the collectors back about 3 to 4 feet. Start the motor and look for the spot where the crayon melts first, that will give you the best spot to put it!! (Now, I don't know if this Is the correct way to do this!! It just my TWO CENTS)!!!!!!!!!
     
  12. sled_dog

    sled_dog 1 ton status

    Joined:
    Sep 3, 2002
    Posts:
    16,870
    Likes Received:
    0
    Location:
    Austin, TX
    while I have never heard a thing about exhaust gas temperature and location of H or X pipe, it actually sounds like a decent thought. Hotter gases travel faster. Hmm... going to make me think now.
     
  13. 87K506

    87K506 1/2 ton status

    Joined:
    Sep 18, 2005
    Posts:
    536
    Likes Received:
    0
    Location:
    Pitkin, Colorado
    I personally would go with an H if you have to have a crossover pipe. I dunno how much it differs, but in the Mustang world, the x was always described as raspy sounding... I have an H with no cats on mine, and love the sound. As far as the difference between the two, it will prolly not be noticable. I would do the H as it has a deeper sound to it...I've heard the thing about the H providing more torque and an x more horsepower...but I think its somethin like 2-3 hp....nothing you will notice.... But on the other hand, do you really need the crossover pipe? I dont have it on my 76 truck, and it runs fine and sounds fine....would it benefit from having one? probably, but I'm not willing to spend the money to have my current exhaust hacked up and pay for someone making an H to go in there.
     
  14. Dafey

    Dafey 1/2 ton status

    Joined:
    Feb 10, 2007
    Posts:
    2,675
    Likes Received:
    0
    Location:
    Roswell NM
    Yeah he asked me how old mine is,its still silver colored.So It should be ok on mine.Hell its only $40 so I'm going to have him do it.
    He`s also going to do the rear pinion seal for $50 at the same time.IF that all thats wrong.

    I still cant believe how much stuff on mine is new...Go check out my other thread.
     
  15. Slapperbar

    Slapperbar Retired Navy NDT Examiner Premium Member

    Joined:
    Nov 29, 2005
    Posts:
    2,747
    Likes Received:
    3
    Location:
    Harrison City, Pennsylvania
    DaPlummer hit on the head...
    There's an optimum place to put the X, but having one in the wrong place is better than not having one.
     
  16. ntsqd

    ntsqd 1/2 ton status

    Joined:
    Nov 28, 2002
    Posts:
    3,381
    Likes Received:
    0
    Location:
    So. CA
    Old timer drag racers paint their header collectors and run a couple passes. Where the paint quit getting burnt off is where they cut the collector off. I have long thot that location would be the most ideal spot for an H pipe, but nearly anywhere fwds of the mufflers would be better than not having one at all.

    Somewhere around here there is a link to an article on exhaust system design written by David Vizard. Would be worth finding that link again.
     
  17. dyeager535

    dyeager535 1 ton status Premium Member

    Joined:
    Dec 13, 2000
    Posts:
    26,980
    Likes Received:
    189
    Location:
    Roy WA
  18. vortec

    vortec 1/2 ton status

    Joined:
    Jul 22, 2004
    Posts:
    1,472
    Likes Received:
    0
    Location:
    fort worth, texas
    i see it this way; because of the obviously different flow characteristics of the two designs, they serve a similar function but in slightly different ways. H-pipe allows pressure equalization between banks, as needed, and x-pipe forces the same effect all the time. i'd feel totally ok with running an H on my k5. now, if i were building a chevelle (gto, vette, whatever) for drag racing, where 1/10 second counts, i'd be more inclined to try to fit an x on there. are you building an 11 second k5? :wink1:
     
  19. BizeeB65

    BizeeB65 1/2 ton status

    Joined:
    Oct 12, 2005
    Posts:
    859
    Likes Received:
    0
    Location:
    Louisville, KY
    That article is amazing. Great read. I will be changing my exhaust here soon since a 3" diameter tree decided to rearrange my passenger side exhaust.
     
  20. BlaKK54Speed

    BlaKK54Speed 1/2 ton status

    Joined:
    Dec 14, 2006
    Posts:
    242
    Likes Received:
    0
    Location:
    Omaha, NE
    i ran true duals, no point in messing with the h or x pipe on this rig
     

Share This Page