Page 1 of 2 12 LastLast
Results 1 to 20 of 22

Strange Noise I think its my headers

This is a discussion on Strange Noise I think its my headers within the External Engine forums, part of the LSx Technical Help Section category; I've been catching hell since I got my headers installed. NOW I've got a noise that only come when I'm ...

  1. #1
    SS#430 1 of 74 7camaro7's Avatar
    Join Date
    Oct 2005
    Location
    Nashville, TN
    Posts
    1,754

    Pewter
    02SS6spd VERT!

    Question Strange Noise I think its my headers

    I've been catching hell since I got my headers installed.

    NOW I've got a noise that only come when I'm under hard throttle and high rpms. I've really decreased the noise with my own work.

    The problems began when I took my car to an exhaust shop and asked them to tighten the bolts to my headers to the engine. They decided to go through and rearrange ALL of my exhaust and I noticed my cme's were sticking out the back like 2in and crooked as hell. I took it back and talked to them about it, next thing you know is their lift hung on my ypipe when it was being backed off. I eventually got them to pay for me a new ypipe.

    Now under heavy acceleration I get a sound that makes me think when my engine twists, the driver side header touches the body. Its only about enough space to get your finger in there and I've already tried to adjust the ypipe. I hate this sound.

    Any help is appreciated.

  2. #2
    Senior Member Wheeler99WS6's Avatar
    Join Date
    Jul 2006
    Location
    indiana
    Age
    35
    Posts
    1,018

    black, 05 Roush
    black, 99 T/A WS.6

    My xpipe used to bang against the body of my car, changed my motor mounts and no more banging.

  3. #3
    member since may 2000 nhraformula's Avatar
    Join Date
    Dec 2002
    Location
    n/w chicago
    Age
    47
    Posts
    6,933

    black
    2000 nhra edition formula

    heat up the y pipe and bend it alittle downwards.
    or, take a crobar and pull down.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

  4. #4
    SS#430 1 of 74 7camaro7's Avatar
    Join Date
    Oct 2005
    Location
    Nashville, TN
    Posts
    1,754

    Pewter
    02SS6spd VERT!

    Quote Originally Posted by Wheeler99WS6 View Post
    My xpipe used to bang against the body of my car, changed my motor mounts and no more banging.
    That's what I was guessing. How hard is it to do? It sounds like something hard to do. Tell me more of what's involved.

  5. #5
    SS#430 1 of 74 7camaro7's Avatar
    Join Date
    Oct 2005
    Location
    Nashville, TN
    Posts
    1,754

    Pewter
    02SS6spd VERT!

    Question

    Quote Originally Posted by nhraformula View Post
    heat up the y pipe and bend it alittle downwards.
    or, take a crobar and pull down.
    I'm scared of denting my piping. Is there a trick to it?

  6. #6
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
    Join Date
    Oct 2006
    Location
    doylestown, Pa
    Posts
    6,818

    SILVER
    2004 CTS-V

    If you can stick your finger in between the header and the body, it is not contacting there unless you got bad mounts. It should not torque that much.

  7. #7
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
    Join Date
    Oct 2006
    Location
    doylestown, Pa
    Posts
    6,818

    SILVER
    2004 CTS-V

    Quote Originally Posted by 7camaro7 View Post
    I'm scared of denting my piping. Is there a trick to it?
    You ain't gonna dent it that much.

  8. #8
    SS#430 1 of 74 7camaro7's Avatar
    Join Date
    Oct 2005
    Location
    Nashville, TN
    Posts
    1,754

    Pewter
    02SS6spd VERT!

    how much are engine mounts and how do you install them?

  9. #9
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
    Join Date
    Oct 2006
    Location
    doylestown, Pa
    Posts
    6,818

    SILVER
    2004 CTS-V

    They are about $35 a piece for Energy Suspension mounts. Support the engine on one side with a jack, lift just enough to take the weight off, and change. Same for the other side.
    Although, I wouldn't go changing them unless you know their bad. How many miles are on em and how do they look? If its a manual, does your shifter move excessively when excelerating?

  10. #10
    SS#430 1 of 74 7camaro7's Avatar
    Join Date
    Oct 2005
    Location
    Nashville, TN
    Posts
    1,754

    Pewter
    02SS6spd VERT!

    about 51,000 miles on them and I have no idea what they look like. No the shifter doesn't really move when accelerating.

  11. #11
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
    Join Date
    Oct 2006
    Location
    doylestown, Pa
    Posts
    6,818

    SILVER
    2004 CTS-V

    You could try taking a crobar and seeing how much they move. Chances are that a Energy Suspension motor and trans mount will eliminate most vibrations. They are alot stiffer and will last longer.

  12. #12
    SS#430 1 of 74 7camaro7's Avatar
    Join Date
    Oct 2005
    Location
    Nashville, TN
    Posts
    1,754

    Pewter
    02SS6spd VERT!

    thanks for the info, I'll look into them.

  13. #13
    member since may 2000 nhraformula's Avatar
    Join Date
    Dec 2002
    Location
    n/w chicago
    Age
    47
    Posts
    6,933

    black
    2000 nhra edition formula

    fuck doing motor mounts.
    go to any exhaust shop or garage, have them get out a torch and heat up teh y pipe and bend it alittle.
    thunder racing also sells this thing called the y pipe bang stop or some shit like that.

  14. #14
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
    Join Date
    Oct 2006
    Location
    doylestown, Pa
    Posts
    6,818

    SILVER
    2004 CTS-V

    Yes, the Mufflex hanger will help but if his Headers are hitting the body like he thinks, it will do no good. You gotta check all around and not just think a hanger is gonna fix it all. You wind up having shit flexing all over the place and eventially breaking. Good Luck, I hope it is the y-pipe cause motor mounts are a p.i.t.a.!!!

  15. #15
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    As a test put a piece of heater hose between the Y-pipe and floor board where it's the closest to your floorboard. If it stops banging then you can put money it's the Y-pipe. I had this issue after my install. I finally put the car on stands and decided I was gonna fix it come hell or high water. What I ended up finding out is the angle of the I pipe is crucial to keep the Y from hitting. Loosen all your clamps back to where it goes over the axle. Adjust the I pipe angle going over the axle to where you have the most clearance with your Y then wedge blocks of wood between the Y and floorboard to keep it from moving and tighten everythng up then knock the blocks out. Did that last year and haven't had it hit since.

  16. #16
    SS#430 1 of 74 7camaro7's Avatar
    Join Date
    Oct 2005
    Location
    Nashville, TN
    Posts
    1,754

    Pewter
    02SS6spd VERT!

    So
    1. Loosen up all clamps back to the axle
    2. straighten up the ipipe to make sure I get the most clearance over the axle.
    3. Use blocks to hold the exhaust in position.
    4. Clamp the exhaust back into place tightly from back to front.
    5. Test drive and see how I like it?

    That's the way I understand it.

  17. #17
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,520

    98 Formula
    06 duramax

    everything except #2 is right.
    You're not looking for the most clearance over the axle, you're looking for the angle that gets you the most Y pipe clearance. When you twist the I-pipe it changes the angle that it connects to the Y. You'll see what I'm talking about when you get under there.

    Do you have U-bolt style clamps or band clamps? If you tighten the U-bolts up to much it'll crush the pipe and you'll never get it back off. I used band clamps all the way back. They don't seal quite as well but if you're like me and have your exhaust off from time to time there's no other way to go.

  18. #18
    Senior Member Wheeler99WS6's Avatar
    Join Date
    Jul 2006
    Location
    indiana
    Age
    35
    Posts
    1,018

    black, 05 Roush
    black, 99 T/A WS.6

    Mine was motor mounts for sure,. I have x pipe with 3"mandrel bent true duals that dump before the axle. too bad mine wasnt just a damn Ipipe. Like stated before changing motor mounts sucks. Kinda scary too, first time I did it, had a buddy with more expirience help.

  19. #19
    SS#430 1 of 74 7camaro7's Avatar
    Join Date
    Oct 2005
    Location
    Nashville, TN
    Posts
    1,754

    Pewter
    02SS6spd VERT!

    I got those u-bolts. it is on there pretty tight. I've got a buddy at a custom performance shop who specializes in exhaust and I'll take it to him later today.

    By the way I'm gettin GMMG later in the summer, should I just wait and get it all done then?

  20. #20
    SS#430 1 of 74 7camaro7's Avatar
    Join Date
    Oct 2005
    Location
    Nashville, TN
    Posts
    1,754

    Pewter
    02SS6spd VERT!

    GOT IT FIXED, it was a damn loose bolt in one of my headers. I took it to my buddy who's in my opinion an expert when it comes to exhaust systems and he found it and I haven't had any problems out of it since. IT SOUNDS SO MUCH BETTER!!!!!!

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Help: strange noise!
    By 98maro in forum Suspension and Handling
    Replies: 4
    Last Post: 05-30-2012, 08:00 PM
  2. strange noise
    By Sic vett in forum Corvette
    Replies: 1
    Last Post: 03-07-2010, 04:17 AM
  3. Strange noise when engine started
    By Varanus762x39 in forum General Help
    Replies: 6
    Last Post: 05-09-2009, 06:42 AM
  4. Hearing strange noise
    By freddy_caprice in forum Manual Transmission
    Replies: 4
    Last Post: 03-15-2009, 01:23 PM
  5. need help (strange noise on takeoff)
    By 70ssrag in forum External Engine
    Replies: 2
    Last Post: 03-06-2009, 08:38 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •