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Thread: Mugen Twinloop Exhaust EP3

  1. #1
    Danny_J's Avatar
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    Default Mugen Twinloop Exhaust EP3

    Does anyone know the size of the donut gasket that sits between the mid pipe and the back box?

    Seems ones I try are too thick.... and not allowing a full seal between the two joints. Diameter is correct as fits on the mid pipe flange just not in the back box flange....




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  2. #2
    Mr.H's Avatar
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    You probably bought the one that goes onto the 421 manifold. gasket to mid-pipe should be 57mm. I did this a few months ago. Try this:

    https://www.ebay.co.uk/itm/HONDA-CIV...frcectupt=true

  3. #3
    Danny_J's Avatar
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    Quote Originally Posted by Mr.H View Post
    You probably bought the one that goes onto the 421 manifold. gasket to mid-pipe should be 57mm. I did this a few months ago. Try this:

    https://www.ebay.co.uk/itm/HONDA-CIV...frcectupt=true

    Yeah itís bigger than 57mn I need. Itís for joint between the mid pipe and the backbox.

    Mid pipe flange is 2.5Ē
    Backbox is 3Ē

    But there doesnít seem to be an appropriate sized donut gasket I can find anywhere for sale

    All the ones I try are either too small on the mid pipe side but fit backbox or vice versa


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  4. #4
    Mr.H's Avatar
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    It may be the 75mm then. But im.sure thats for the manifold. Ive used the 57mm with no issues.

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