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Thread: 1.8 Exhaust

  1. #1
    Regular Member GoldenWonder's Avatar
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    Default 1.8 Exhaust

    With typical bad timing it looks like my exhaust is blowing (I'm off on holiday tomorrow so it only has to make it to the airport!)

    It looks like the front pipe, where the 'flexible' bit is. I'm not sure whether that bit supposed to move or not but it does now!

    What sort of price am I looking at for the front pipe? (its a 2006 1.8) and is it generally worth replacing the whole exhaust? I've sometimes found it more cost effective to to the whole thing - probably as garages/fitters don't have to fight with rusted on bolts etc!

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    If it's anything like the Vec B (apologies, can't remember for the C!) then the downpipes, flexi and the cat are all one piece.

    Wouldn't bother replacing the lot unless it's obviously corroded (my Vec did 80k on it's original back box!)

    The front section is the least likely to have seized bolts etc anyway as it's the hottest and driest section.

  3. #3
    Regular Member GoldenWonder's Avatar
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    I've had a quick look and it looks like the cat is right at the front, almost at the manifold then a join to the front pipe (with the flexi part) then all the way to the back where it joins the back box.

    That looks like theres only 2 sections to me - assuming it is the cat right at the front!

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    Should be at least 3 sections.

    Backbox
    Centre section
    Cat
    Downpipes (if not welded to the cat)

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    front pipe i think is a vauxhall only part on the 1.8 vvt , i had to order mine from vauxhall and it was £203 , some people say you can cut the flexi out and weld a new one in , but they have put it so close to the cat which is at the front that a bad weld might stop it flexing the way it should and crack the cat , its a dilemma

  6. #6
    Regular Member Tam80's Avatar
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    I Got My 1.8 Front Pipe From Local Factors For £50

    Its A Mani-Cat On The 1.8 Mate

    Factors Done Me The Bk-Box/Middle/Front Pipe For £130
    Last edited by Tam80; 21st August 2011 at 19:03.

  7. #7
    Regular Member GoldenWonder's Avatar
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    The cat definitely has a joint before the flexi part so I hope its like Tam80's where the front pipe can be done seperately.

    Theres a lot of movement on the flexi part - looks like its designed to move around quite a bit!

    Looking on ebay theres a few but they have the lambda sensor after the flexi bit, where as mine is sticking out of the manifold/cat

    Surely the 1.8 vvt would have had a standard exhaust or does it vary from version to version? (ie SRi or Exclusiv like mine)
    Last edited by GoldenWonder; 21st August 2011 at 19:21.

  8. #8
    Regular Member Tam80's Avatar
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    Quote Originally Posted by GoldenWonder View Post
    The cat definitely has a joint before the flexi part so I hope its like Tam80's where the front pipe can be done seperately.

    Theres a lot of movement on the flexi part - looks like its designed to move around quite a bit!
    yep i ripped the crappy covering on the flexi goin over a speed ramp lol

    left mines kinda ******

    yours should be the same mate

  9. #9
    Regular Member GoldenWonder's Avatar
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    Yeah its like a mesh sheath over the joint - which is all torn away at one end. i guess thats let the pipe flex more which is causing the blow.

    Hope it holds together as I'm off to the airport tomorro!

  10. #10
    Regular Member taffy bhoy's Avatar
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    i just replaced the back box and centre piece on my 2003. like said above, the front piece only has the flexi and an 02 sensor hole. the cat sits directly in front of the engine, and is a seperate piece, when i was pricing up parts the front piece was around £50

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