[928uk] Offside sill corrosion

Martin Robins martin at robins.co.uk
Sun Jul 31 15:49:25 UTC 2022


Hi, I have taken the sill covers off my S4 and it is not difficult. I used a heat gun to free off the back sill cover and when I replaced it used black double sided rubber tape. 
I recommend the correct thickness. As Paul says the door strip can easily be damaged so go easy! The rot can be assessed and repaired once exposed.
Hope this helps
Martin89gt

Sent from my iPhone

> On 31 Jul 2022, at 16:39, Paul Lacey <t595 at btinternet.com> wrote:
> 
> Hi Colin,
> Did anyone answer this question ?
> The plastic sill covers can / do trap moisture and crud (which stays damp).
> Unfortunately if you have corrosion bad enough for the MOT man to see then
> you most likely have quite a lot of rotten metal on both sides of the car.
> Also unfortunately, if Mr. MOT has seen it this is likely to be inner sill
> corrosion at the back of sill about 12" forward of rear wheel arch. It's
> very hard to see with car on the ground.
> You will inevitably need an "old school" body shop who can make up some
> repair patches. If it's a good bodyshop these will be as good as any full
> sill replacement.
> You are correct, you need somewhere that knows 928's because there's a fair
> amount of trim that has to come off to do this work. If they don't know what
> they are doing this will be painfully expensive and stressful due to broken
> parts needing replacement, some of which are NLA.
> 
> Best regards and luck,
> Paul Lacey
> 
> -----Original Message-----
> From: colin coombs [mailto:colin_coombs at hotmail.com] 
> Sent: 30 July 2022 11:17
> To: 928uk at lists.928.org.uk
> Subject: Offside sill corrosion
> 
> Hi all
> 
> MOT advisory for corrosion to offside rear sill. Not had the outer cover
> off. Recommendations for what to do (patch or full replacement) and where to
> get this done appreciated. Is the sill part still available? (1990 S4).
> Willing to travel (based in Midlands) for the right place who know 928s.
> 
> Thanks in advance
> 
> Colin
> 
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