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Model specific boards => Golf mk3 => Topic started by: birch on 18 October 2011, 07:49

Title: underside rusting
Post by: birch on 18 October 2011, 07:49
my 1993 8v got a couple of comments on the mot advisory about rust starting underneath the car. 'corrosion around rubber grommets in the floor' ive tried a couple of rust stopping products in the past with little success, can anyone tell me the best method and product to try and stop or at least slow down the corrosion. thanks.
Title: Re: underside rusting
Post by: Seanl on 18 October 2011, 08:55
Cut it out, and weld in new. You will only slow the spreading down by treating it, and I wont make any difference to the areas that are already affected. Shouldnt cost massive amounts and you will just keep spending money on kurust or the like, paint, underseal etc etc anyway.
Title: Re: underside rusting
Post by: Wayne on 18 October 2011, 09:02
If it is only surface rust, wire brush back and treat with underseal. :smiley:
Title: Re: underside rusting
Post by: Len on 18 October 2011, 10:02
It wont be surface rust for an MOT advisory! :rolleyes:

Those grommet things are an absolute pain!

As Seanl says get it cut out and welded is best solution and a good underseal.
Title: Re: underside rusting
Post by: Wayne on 18 October 2011, 10:21
It wont be surface rust for an MOT advisory! :rolleyes:

If it was major rust it would have failed  :rolleyes:

It says rust starting underneath the car so if caught in time might not need plating.
Title: Re: underside rusting
Post by: AudiA8Quattro on 18 October 2011, 11:10
Stop flirting you two  :grin:
Title: Re: underside rusting
Post by: Gti_Jamo on 18 October 2011, 11:59
Will need to cut it out to do it right. Rust is like a cancer and will spread if not dealt with. Those floor gromets are easy to sort out.
Title: Re: underside rusting
Post by: Len on 18 October 2011, 13:21
It wont be surface rust for an MOT advisory! :rolleyes:

If it was major rust it would have failed  :rolleyes:

It says rust starting underneath the car so if caught in time might not need plating.

Try and read what I said numpty!
Title: Re: underside rusting
Post by: Wayne on 18 October 2011, 13:27
It wont be surface rust for an MOT advisory! :rolleyes:

If it was major rust it would have failed  :rolleyes:

It says rust starting underneath the car so if caught in time might not need plating.

Try and read what I said numpty!

I did  :smiley: , and as I said if it was too bad it would have failed the mot so if it is caught in time what is the point of cutting it out, when cleaning it back, treating it and undersealing it would do the job.

My god I never missed you once when you went on holiday  :grin:
Title: Re: underside rusting
Post by: Gti_Jamo on 18 October 2011, 13:37
I'm sure corrosion will only fail if its within 12 inches of a structural area like suspension mountings, seatbelt mounting etc. Or if its exposed with jagged edges. Those grommets could be a rusty gaping hole and still pass if outside the prescribed areas.
Title: Re: underside rusting
Post by: Len on 18 October 2011, 13:37
And again you are too stupid to understand.

IF it was only surface rust as you said it would never make it onto an advisory list!
Therefore it must be more than surface rust and must be dealt with more firmly than a wire brush!

I would also add that wire brushing rust without then using something like kurust to chemically stop the rust will also be wrong!
Title: Re: underside rusting
Post by: VR6_Wherry on 18 October 2011, 13:58
Come on now ladies... :grin: :grin:
Title: Re: underside rusting
Post by: AudiA8Quattro on 19 October 2011, 14:47
IF it was only surface rust as you said it would never make it onto an advisory list!

Not really, testers put all sorts of things on advisory sheets, even oil leaks and other non MOT items  :lipsrsealed:
Title: Re: underside rusting
Post by: Len on 19 October 2011, 15:25
You know some cr@p testers then Corin! :rolleyes:
Title: Re: underside rusting
Post by: javalin on 19 October 2011, 16:21
i've had an advisory for underside rust before, so did the the old horsebox (class 7 mot)

James
Title: Re: underside rusting
Post by: AudiA8Quattro on 19 October 2011, 16:50
You know some cr@p testers then Corin! :rolleyes:

Not at all Len. Its standard practice to put any mechanical defects or leaks on the advisory list.
It shows VOSA that the tester is paying attention  :wink: