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Thread: Can you have a look at your undertray?

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  1. #1
    Join Date
    May 2008
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    Erskineville, NSW
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    Users Country Flag

    Can you have a look at your undertray?

    The undertray of my 2008 1.8tsi manual is only half-length & has a couple of NACA ducts on the passenger side - I assume to cool the gearbox.
    It looks approximately like this (this is leading edge pointing upwards):
    Can you have a look at your undertray?-cfrk9cw-2k~$-kgrhqmokpye0vbgtlnsbnv7sil2ng~~_35-jpg

    I'd never given this much thought but was looking at later model petrol vRS and noticed the undertray went right back to the crossmember.

    I figured this would be a good thing for aerodynamics & also noise so when I came across a cheap undertray from a golf diesel I fitted it (it appears Golf, Passat, Audi A3, A4, Jetta, Scout, Yetti, Tiguan & Octavia all share the same undertray dimensions).

    The one I fitted looks like this with no NACA ducts (leading edge pointing downwards):
    Can you have a look at your undertray?-4cacd4514a72b-jpg

    Can someone have a look under their vehicle & if it has the full length undertray tell me if it has the ducts and is it manual or DSG?

    I suspect the ducting is particularly for DSG equipped vehicles but if it's common for the manuals as well I'll do some cutting & glueing & incorporate my half-tray ducts into the full tray.
    Last edited by brad; 11-08-2014 at 03:25 PM.
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