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.

Straight pipe on a 6.2?

Discussion in 'The Garage' started by shaun, Jun 10, 2005.

  1. shaun

    shaun 1/2 ton status

    Joined:
    Apr 22, 2003
    Posts:
    745
    Likes Received:
    0
    Any body done this? how does it sound? Or would it sound better with the 2 flowmaster single chamber 40's I have? Please give me opinions. I am thinking dual 3" if I straight pipe it. If I do the flowies it will be 2.5 to the mufflers (right after tcase) the 3" from there and possiblt 2 tips I dont know yet.
     
  2. cegusman

    cegusman 3/4 ton status

    Joined:
    Apr 25, 2001
    Posts:
    6,793
    Likes Received:
    0
    Location:
    Houston/Katy, Tx
    Ran it on mine, stock 2 1/4" pipe with muffler chopped off. Very loud, enough to drown out the sound of 39.5 boggers going 60. I will be putting 2 mufflers on mine when I am done building it.
     
  3. jmd4x4

    jmd4x4 1/2 ton status

    Joined:
    Apr 4, 2005
    Posts:
    137
    Likes Received:
    0
    Location:
    Rosenberg TX
    I have staight pipe on my powerstroke, its a single 3.5 in pipe and it sounds good. If it were me I would straight pipe it, its not much louder than stock and a lot quiter than a straight piped gas engine. I dont know how the 6.2 will sound w/ straight pipe, but I have never heard a bad sounding deisel.

    hope this helps some

    later
    jmd
     
  4. 6.2Blazer

    6.2Blazer 1/2 ton status

    Joined:
    Feb 24, 2000
    Posts:
    4,675
    Likes Received:
    26
    Location:
    Ohio
    Powerstroke = turbo
    6.2 = no turbo

    The turbo does quite a bit towards muffling the exhaust so you can usually get away with running straight pipes on a turbo diesel.

    Straight pipes on a non-turbo equipped 6.2 will be L-O-U-D. I run dual 2.5" 40-series Flows on mine and just everybody thinks it sounds really good......they are usually pretty surprised when they find out it's a diesel. However, it is still pretty loud and has quite a bit of resonance inside with that setup.
     
  5. jmd4x4

    jmd4x4 1/2 ton status

    Joined:
    Apr 4, 2005
    Posts:
    137
    Likes Received:
    0
    Location:
    Rosenberg TX
    Well thanks for the info, I forgot that the 6.2 was not turbo. I did not know that being non turbo made such a differance. I will keep that in mind.

    later
    jmd
     
  6. shaun

    shaun 1/2 ton status

    Joined:
    Apr 22, 2003
    Posts:
    745
    Likes Received:
    0
    I guess I will go with the dual 40's than. Thanks
     
  7. cegusman

    cegusman 3/4 ton status

    Joined:
    Apr 25, 2001
    Posts:
    6,793
    Likes Received:
    0
    Location:
    Houston/Katy, Tx
    Good choice;)
     
  8. yunit

    yunit 1/2 ton status

    Joined:
    Feb 24, 2000
    Posts:
    3,068
    Likes Received:
    0
    Location:
    Oakland, NJ
    My 6.2 with straight pipes was to loud, glad I put the mufflers back on.
     
  9. steve_kibbe

    steve_kibbe 1/2 ton status

    Joined:
    Feb 4, 2004
    Posts:
    2,895
    Likes Received:
    2
    Location:
    Spartanburg, SC
    replied in th DIESEL FORUM :D
     
  10. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,178
    Likes Received:
    1,387
    Location:
    E-town baby!
    There is a Diesel forum? :)

    Rene
     
  11. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

    Joined:
    Aug 28, 2002
    Posts:
    9,097
    Likes Received:
    144
    Location:
    california
    It will sound like crap strait piped. Only the TD's sound good strait piped.

    I would go and buy a good quality DIESEL muffler.
     
  12. jhellwig

    jhellwig 1/2 ton status

    Joined:
    May 7, 2005
    Posts:
    420
    Likes Received:
    0
    Location:
    Bonaparte, Ia
    Are headers also going on it?


    And before anyone laughs at me I will tell you that I saw an erly 80 furd desil that had headers and dual glass packs. It sounded very nice.
     
  13. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

    Joined:
    Aug 28, 2002
    Posts:
    9,097
    Likes Received:
    144
    Location:
    california
    I've never seen or even heard of a set of headers for a 6.2 diesel. Only ATS comes close to that with a performance manifold for the Ram Cummins.
     
  14. Robert79K5

    Robert79K5 1/2 ton status

    Joined:
    Mar 23, 2003
    Posts:
    335
    Likes Received:
    0
    Location:
    Douglasville Georgia
    It didn't take long at all for me to make putting mufflers on my Blazer after I did the Diesel swap to it. Just way too loud and obnoxious.
    But thats just me.
     
  15. joez

    joez 1/2 ton status

    Joined:
    Oct 21, 2003
    Posts:
    2,512
    Likes Received:
    0
    Location:
    New Lenox, Illinois
    Ha, headers for 6.2's were factory pieces in Hummers.
     
  16. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,178
    Likes Received:
    1,387
    Location:
    E-town baby!
    Yup, i got a set of H1 6.2 headers in my closet...

    Rene
     
  17. rjfguitar

    rjfguitar 3/4 ton status GMOTM Winner

    Joined:
    Aug 28, 2002
    Posts:
    9,097
    Likes Received:
    144
    Location:
    california
    Hey thats pretty darned cool...are they really worth much of a power gain? Do they look like an actual header?

    Original Poster,

    I don't exactly know what you plan on gaining from a new exhaust but I am familiar with pickups like mine.

    When I go with a performance exhaust, I will be trying to lower the exhaust gas temperatures, promote more flow, add a nice looking exhaust, and have a nice performance diesel sound. Mainly the flow and EGT drop most importantly.

    My point is, is that if I was going to spend money on a setup I would use a diesel exhaust, inluding a diesel muffler, so I get the best results for my modification. Those dual flowmasters may help some but (correct me if I'm wrong) a flowmaster designed for a gas engine does provide a fair amount of back pressure, gas engines like that. I would think that would just be added restriction behind a diesel since they pretty much prefer no back pressure. I would think a good strait through diesel muffler would provide better EGT's and power gains over dual gas mufflers. Maybe not though.
     
  18. Drey

    Drey 3/4 ton status

    Joined:
    May 8, 2003
    Posts:
    8,288
    Likes Received:
    0
    Location:
    Iowa
    I have a 3 or 3 1/2 cant remember straight pipe right off my turbo on my 6.2, I love it, I have a 90 degree tip that shoots it straight down and makes it cackle really nice. Its not to loud for me...just my stereo is to quiet :grin:
     
  19. tRustyK5

    tRustyK5 Big meanie Staff Member Super Moderator GMOTM Winner Author

    Joined:
    Jul 23, 2000
    Posts:
    36,178
    Likes Received:
    1,387
    Location:
    E-town baby!
    The Hummer headers are tubular, but are not long tube. I imagine they'd help a little with power, diesel apparently really respond to free flowing exhuast. We'll see i guess.

    As far as muffler choice goes, from what i understand the big thing with diesels is soot. Because of this the mufflers to avoid are glass packs which will eventually clog with soot. A Flowmaster is a pretty free flowing muffler and should do fine behind a 6.2. I currently run a single 2.5" 50 series behind my 6.2 and it does fine.

    My plan is dual 3" 40 series flowmasters and the Hummer headers. I've heard with larger dual exhuast the NA 6.2 sounds very similar to a big block.

    Rene
     
  20. jhellwig

    jhellwig 1/2 ton status

    Joined:
    May 7, 2005
    Posts:
    420
    Likes Received:
    0
    Location:
    Bonaparte, Ia
    Turbo on a 6.2? :confused: After maket?
     

Share This Page