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Thread: 3.2 Dual Exhaust - One good, one bad?

  1. #1
    Regular Member Lightboy's Avatar
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    Default 3.2 Dual Exhaust - One good, one bad?

    Hi All,

    I've got 2 zorst pipes on my Veccy GSI & with all this cold weather I noticed a strange difference between the two. As you see the vapour being pumped out on a cold autumn morning I noticed that one box was flowing nicely and the other barely at all.

    Even after she'd warmed up a bit the passenger side was flowing easily but the drivers side only just managed a tiny dribble!

    Any ideas? (its a standard exhaust)

    Thanks, Doug.

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    Regular Member simac's Avatar
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    It does that because one of the tail pipes is a branch of the other one, IIRC the left hand one is the "main" pipe while the right hand one branches of it and takes less of the flow.

    I think that's right anyway

  3. #3
    Regular Member Lightboy's Avatar
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    oh crap, I didn't look actually... I thought that they were 'Y' split but I'm probably wrong!

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    Regular Member simac's Avatar
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    There was someone on here a while back asking a similar question (think it was a 2.2direct), might be able to find it with a search ?

  5. #5
    Regular Member Lightboy's Avatar
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    already looked before I created the thread - couldn't find anything similar though. :-/

  6. #6
    Regular Member Ste's Avatar
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    at idle, exhaust will flow through the easiest path, so will prob favour one side as there is very little exhaust flow.

    At higher flow rates (ie when driving) there will be less difference as the increased flow will be forced to use both tailpipes

  7. #7
    Regular Member Gsi3.2's Avatar
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    ^^^^ just what he said..

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    Regular Member BigP's Avatar
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    Mine does this aswell.
    I think the exhaust on my 2.2 direct splits in the same place but one of the silencers is bigger, (n/s I think). Which is what I attributed it to.

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    Just wish i had twin exhausts.

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    Twin exhausts, more to replace. Im happy with 1 of everything. Legs, eyes, etc etc

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