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Exhaust Leak

Discussion in 'Civic and del Sol - EG and EK' started by blacksilo, Jan 9, 2009.

  1. blacksilo

    blacksilo New Member

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    hey guys,

    i have a 94 ex with a megan 4-2-1 header, a magniflow high flo cat and a full aluminized flowmaster 50 exhaust all the way back.

    i have had an ongoing exhaust leak well since about 2 weeks after i got my megan header and i know these are prone to leak so i have changed the gasket by cutting out a template from a sheet of material.

    the only other places i can think of that the leak is coming from in the head seal or the donut gasket on the flange to the cat.... i just replaced the head exhaust gasket around 6 months ago and the donut gasket seems to be the culprit.

    have any of you guys shared the same problem? someone mentioned a heat shield rattling but i just retightened those bolts as i just did the rear disc swap on my car, so before i get it back out there, any suggestions on how to keep it from springing a leak in the future?

    i guess i can get a new header but that doesnt seem to make much sense and the exhaust does not have any holes in it, it was just welded up about 6 months ago and is still pretty much brand new so its from the donut-flange gasket forward.

    thanks!
    James
     
  2. serrilion

    serrilion In my own little world! VIP

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    So what exactly are you asking us? besides telling us your getting a new gasket of sorts? that humbo jumbo lost me, sorry!
     
  3. blacksilo

    blacksilo New Member

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    hey yeah, sorry about the rambling :cool:

    i just kinda wanted to know if other people with those megan headers have had trouble in the past with either the mid-way flange or the donut gasket, seems like the megan headers are known to blow those midway seals,

    i did goto napa and get a double sided donut gasket to try, will let you know if it helped later on
     
  4. BrutalB83

    BrutalB83 Brutal Moderator Moderator VIP

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    Did they give you an actual donut gasket for in between the header and the cat? Or was it a flat gasket? When I got my Megan header they gave me a flat gasket, but that wasn't right. It should be a thick, rounded donut gasket. Once I swapped that out everything sealed up nicely. I've had it for over a year now, no leaks...
     
  5. serrilion

    serrilion In my own little world! VIP

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    Ya I had a set of headers, Hi Flow Cat, and Exauhst from them... all seemed nice, but again I needed to replace the Gasket to motor, and Gasket between the cat / headers lmao... :) Nice sounding tho with Decent power gain!
     
  6. blacksilo

    blacksilo New Member

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    yeah, they did give me an actual metal donut gasket when i got the header, but i found out yesterday that these are one time use "crush" do nut gaskets and i have had my exhaust off about 5 times now, once for the front main/timing belt and then 4 other times to fix the midway gasket!
    so i got this weird ass double tapered donut gasket from napa that i think did the trick but i will have to wait and see...

    but i love the way the car sounds especially with the flow 50 can on there and the header, lots of noticeable mid-range power gain

    thanks again, i hope for finally once i can not have that tick tick tick tick tick...it's attractive :)
     
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