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Thread: Does this need under-sealing???

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    Vehicle : Vectra C

    Trim : SRi

    Engine : 1.8 petrol

    Year : 2006

    Default Does this need under-sealing???

    2006 1.8 SRi

    I was a bit surprised to find my right-hand-side front subframe in this state:

    subframe2.jpg

    How far off an MoT fail do you reckon that is? It doesn't feel soft or anything but it's not good - a couple of years and that could be a fail, right?

    And replacing/repairing would be pretty expensive, I'd expect.

    Is it worth treating it somehow? My first thought was to get the angle-grinder on it with a wire brush attachment to remove the loose stuff and Hammerite. But I guess under-sealing would be the right way?

    Is it worth it though? I've never under-seled - is it a big job? Should I ask the garage to do it - I've heard it's a ****** of a job...

    Any thoughts much appreciated.

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    Regular Member northpole's Avatar
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    Vehicle : Vectra C

    Trim : SXI limited edition

    Engine : 2.0 16v DTI

    Year : 2003

    Mileage : 140000

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    Use hammerite smooth satin black after you cleaned it up... because it will keep rusting until the it disintegrates.
    Ps apply rust converter to it after you cleaned it to stop it from going any further

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    Trim : SRi

    Engine : 1.8 petrol

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    Quote Originally Posted by northpole View Post
    Use hammerite smooth satin black after you cleaned it up... because it will keep rusting until the it disintegrates.
    Ps apply rust converter to it after you cleaned it to stop it from going any further
    Cheers fella, sounds like a plan. Not too difficult fortunately as it looks like I can get at all the affected areas easily.

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    Midlands - Head case Organiser Dog_Book's Avatar
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    Either way nothing will work now the rust is deep into the metal it will eventually go unless the rotten part is cut out. The rust will come back
    Vectra VXR estate 2007 Sapphire Black
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    Regular Member northpole's Avatar
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    get a used one that is less crusty and take your time replacing it... Mine had some rust on it and rust converter with hammerite made it look like new.

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    Subframe loads on eBay. Easy with two people a right pain by yourself. Or take it off and powder coat it.


    Sent from my iPhone using Tapatalk

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    The 1.8's tend to rust more than the other models in the Vectra range, as they don't travel fast enough to shake off the rainwater.

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    Thanks guys - it hadn't occurred to me to replace it.

    I reckon some Hammerite will buy me some years as I think I've caught it fairly early.

    Hammerite claims to be a rust converter by itself... is it really worth using something else too?

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    You might want to add some cavity wax (eg waxoyl) to the inner part of it while you're at it. If it's not in a high impact area, rub off the worst of it and give it a generous coating of waxoyl. That stuff should penetrate far better than paint will.

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    Quote Originally Posted by Big Dave View Post
    You might want to add some cavity wax (eg waxoyl) to the inner part of it while you're at it. If it's not in a high impact area, rub off the worst of it and give it a generous coating of waxoyl. That stuff should penetrate far better than paint will.
    Woah there Big Dave, Waxoyl... I've heard of that... many years ago... isn't that like some mythical beast of old??

    { Googles }

    Ah no! Apparently, it's the big daddy of auto rust-treatments!!

    That sounds like a world of fun, squeezing under the car and covering myself in waterproof gunk.

    Sounds like the right thing, though, for sure.

    The website's not clear - the photo shows it in a can, like you pour it out and paint it on. But the text says "Available in Aerosol, Schutz, Refill Can & Pressure Can"

    WTF is a schutz?

    So anyway, do you recommend the regular aerosol? Doesn't sound like I'm gonna be able to get much inside the frame ("the inner part of it while you're at it") with a regular aerosol can though...

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