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Thread: MK4 expansion tank upgrade

  1. #1
    Super Moderator Kevin Bacon's Avatar
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    MK4 expansion tank upgrade

    Excuse the mess that is my engine bay, but thought I'd share with you a worthwhile upgrade.

    Anyone that's struggled with a silly tight expansion cap on the Corrado with a pair of pliers will agree, enough is enough!

    So here it is, the click stop MK4 cap and tank. P1ss easy to undo, regardless of header tank pressure. And it's nice and white and not murky brown.

    All you need is a few plumbing fittings and the MK4 level sensor plug to complete. Bolts right in.

    Best bet, guess how much the MK4 tank is? £9. Yep, 9 whole english pounds. Bargain if you ask me.

    Did have: 94 Corrado R32
    Now have: 2004 Golf R32

  2. #2
    ⋆⋆ CF Member ⋆⋆ Jim Bowen's Avatar
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    Re: MK4 expansion tank upgrade

    very up for doing this, i hate undoing my header tank

    i've been stuck at the side of the road hitting it with a rock before now

    what are the plumbing bits you need?
    Just like a golf................But better!!!

  3. #3
    Super Moderator Kevin Bacon's Avatar
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    Re: MK4 expansion tank upgrade

    The nice blue and red alloy ones in the pic

    Or you could just use a cheaper plastic or brass Y peice
    Did have: 94 Corrado R32
    Now have: 2004 Golf R32

  4. #4
    CF Nutter
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    Re: MK4 expansion tank upgrade

    is that £9 from vw?
    1990 1.8 16v Alfa Nuovolla Blue, Breaking soon

    1991 1.8 16v Bordeaux Pearl, Gotta love standard, (well almost)

    1992 2.0 16v Alpine White, Fresh paint coming to a forum near you!

  5. #5
    ⋆⋆ CF Member ⋆⋆ Jim Bowen's Avatar
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    Re: MK4 expansion tank upgrade

    can you not just connect the original hose to the header tank? or is something different.

    iirc the hose i mean is going to the throttle body area and tee's off to the header tank
    Just like a golf................But better!!!

  6. #6
    Super Moderator Kevin Bacon's Avatar
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    Re: MK4 expansion tank upgrade

    Yep £9 from VW

    The MK4 sensor plug and overflow inlet are in completely different places to standard, but the original hose might reach over. A few of these have been done in Corrados successfully now.
    Did have: 94 Corrado R32
    Now have: 2004 Golf R32

  7. #7
    CF Nutter pete_griff's Avatar
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    Re: MK4 expansion tank upgrade

    nice!

    guess what i'm ordering on monday!
    Griff
    '93 R32 converted VR6 - sadly missed

  8. #8
    ⋆⋆ CF Member ⋆⋆ Jim Bowen's Avatar
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    Re: MK4 expansion tank upgrade

    going to put it on my list for the next trip to vw (once i've got the door open)
    Just like a golf................But better!!!

  9. #9
    ⋆⋆ CF Member ⋆⋆ Jim Bowen's Avatar
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    Re: MK4 expansion tank upgrade

    a pic for spot the difference, i have a gruvenparts T-piece i bought by mistake, but thing that goes in totally different place.. Is it safe to cut samcos?

    Just like a golf................But better!!!

  10. #10
    ⋆⋆ CF Member ⋆⋆ Jim Bowen's Avatar
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    Re: MK4 expansion tank upgrade

    erm.. your engine is a bit.......different
    Just like a golf................But better!!!

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