cant get o/r h to seal

Discussion in '1994 - 1995 Specific Tech' started by GTPhreak, Dec 16, 2003.


  1. GTPhreak

    GTPhreak Founding Member

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    cant get an offroad h pipe to seal at the headers. both sides leak. it is as tight as i can get it. any ideas?
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  2. GTJake

    GTJake Founding Member

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    NAPA sells gaskets.

    Jake
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  3. GTPhreak

    GTPhreak Founding Member

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    got any pics/part numbers? there really isnt any napa's nearby i have autozone and oreilly's. when i say it wont seal, i mean like not a tiny leak, its not sealing at all...everything appears to be lined up well too
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  4. GTJake

    GTJake Founding Member

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    I would try autozone. I just got one at NAPA. If it's not sealing at all....is it the wrong donut connector? The gasket is like an 1/8" thick. I don't know if it will solve your problems or not.

    Jake
    #4
  5. GTPhreak

    GTPhreak Founding Member

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    what do you mean donut connector? it is the ball/socket design like stock. everything looks lined up right
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  6. GTJake

    GTJake Founding Member

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    Yeah, where the h-pipe connects to the headers. Sorry I'm not much help here.

    Jake
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  7. riffraff

    riffraff Founding Member

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    Make sure you don't have any dings on the SOCKET end. That will cause it. Don't OVER tighten the bolts either. Take a look at both. Good luck
    #7
  8. Joes95GT

    Joes95GT New Member

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    Do you have emissions to worry about? If not, just weld it.

    Joe
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  9. Numbles

    Numbles Active Member

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    Try an impact gun. That migh get them tight enough. My exhaust had a leak and I went to a local muffler shop and they just impacted it reall quick for me.

    But with an o/r pipe a muffler shop might not tough it.
    #9
  10. HazMat404

    HazMat404 Founding Member

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    i probably have your answer (someone said it before). i have had an exhaust leak just like that for about a month now. it was from over tightening the bolts and i actually flared out the socket part on the o/r pipe so that it didnt make a full connection. well i went to a speed shop and got some Mr. Gasket exhaust gaskets (autozone and pepboys dont have them so you might need to order online if you dont have a speed shop or napa around). i cut holes for the bolts to go through and just a lil bit bigger of a hole than the opening of the header. loosened the hpipe, slipped them in and tightened them up. boom, month long exhaust leak gone.

    now i just have to stop my catback from leakin :(
    #10
  11. RIO5.0

    RIO5.0 Mustang Master

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    Try these...Its what i use...the P/N you see on the box should be a good number.I trim the holes out, loosen the connection enuf to slide them in...should cure it...

    Attached Files:

    #11
  12. David R

    David R New Member

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    I just had O/R H-pipes installed, and they leak also at flanges to header pipes. Did you get yours fixed? Do you have to put in gaskets or whats the best way to stop the leak?
    #12
  13. Slow5.0

    Slow5.0 New Member

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    I don't use any gaskets between LTs and O/R H pipe and H-pipe/flowmasters

    Bay the way riffraff you have nice Stang :nice:
    #13
  14. GTPhreak

    GTPhreak Founding Member

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    mine is sitting in the garage untouched since i posted this :p
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  15. David R

    David R New Member

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    Got the leaks fixed... Just welded the H-Pipes in the center where they connect together. No way will a u-clamp keep it from leaking. Guess thats the disadvantage with 2-piece H-pipes. Got them from Jegs and they fit good.
    #15

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