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Thread: Twin exaust conversion

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    Default Twin exaust conversion

    Hi all, After 4 weeks of trying to sell my Signum, I've conceded defeat and decided to keep it. Now I want to get it looking the way I want. I have a 2.2 direct with the twin exausts hidden underneath. 1st thing I want to do is to get these so they are visible. Can anyone advise me what I need to do and where to start. Cheers Ian.

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    Regular Member Jezzy's Avatar
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    The grey trim under the bumper that hides the exhaust - get a replacement for that from Vauxhall that has two cut outs in it that allow the exhaust pipe to exit through them. If you want, you can also colour-code this trim. Then cut off the down-turned tips on your existing back boxes and bolt on a pair of stainless steel tailpipe tips/extensions. Sorted.

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    wow as easy as that. I was expecting to have to weld some pipe on. the piece I have to take off my bumper,how is it fixed on?

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    Quote Originally Posted by ncfcsignum View Post
    wow as easy as that. I was expecting to have to weld some pipe on. the piece I have to take off my bumper,how is it fixed on?
    It's held on with lots (about a dozen or more) plastic clips. Allegedly they can be undone, but I found it easier to cut them off with a dremel, given that I wasn't going to be using the old trim again. Do it carefully and you don't damage the locating lugs on the bumper, so the new trim goes on fine.

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    Regular Member James C's Avatar
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    Vehicle : Vectra

    Trim : Elite

    Engine : 2.8 Turbo

    Year : 2006

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    Kinda sticking on the theme, anyone know the size of the stock pre-facelift twin pipes? I've just ordered the lower valance today and want some stock-ish looking trims. Oh, and my local deal wanted just under £50 for the pre-facelift rear skirt.

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    Regular Member Jezzy's Avatar
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    Quote Originally Posted by James C View Post
    Kinda sticking on the theme, anyone know the size of the stock pre-facelift twin pipes? I've just ordered the lower valance today and want some stock-ish looking trims. Oh, and my local deal wanted just under £50 for the pre-facelift rear skirt.
    Get under the car and have a measure, also work out how long the new tailpipe trim needs to be, then contact MIJ and they can make you what you need, probably about £30 a side for something like 6"x4" oval stainless steel tips.

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    Quote Originally Posted by Jezzy View Post
    Get under the car and have a measure, also work out how long the new tailpipe trim needs to be, then contact MIJ and they can make you what you need, probably about £30 a side for something like 6"x4" oval stainless steel tips.

    Or you could buy 2 of these.

    http://cgi.ebay.co.uk/OVAL-POLISHED-...es_CarParts_SM

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    Regular Member Jezzy's Avatar
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    Quote Originally Posted by crespo View Post
    Nowhere near long enough - they'll still be tucked under the bumper instead of intruding out.

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    Full Member keefy*2010's Avatar
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    Vehicle : Vectra C Facelift

    Trim : Elite

    Engine : 1.9Cdti 150

    Year : 2007

    Default

    I have seen on fleabay
    angled stainless steel exhaust trims you will
    Need pipe diameters.

  10. #10
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    Quote Originally Posted by Jezzy View Post
    Nowhere near long enough - they'll still be tucked under the bumper instead of intruding out.
    How.

    You clamp them to the original exhaust pipe so you can have them as far in (until they touch the backbox) or as far out past the bumper as you like.
    You dont weld them to the backbox you know.

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