It Started With a Tiny Bit of Corrosion

Lovel

Member
Hi there,
There has been a tiny bit of corrosion at the bottom on my drivers side D-post which I have put up with for a number of years. Upon digging deeper I found that it was indeed well past its best with a number of botches over the years. Unfortunately when the previous owner of my car replaced the sills they didn't get down to the bottom and remove all rust. Hence now I am having to remove some perfectly good rust free material to get to it and do the job properly. The photos attached are taken from the rear OS jacking point looking forward.

I am going to replace the complete inner box section sill with new as the existing square holes for the sill covers are too large for the plastic retainers and it seems to be fitted at an angle. As I don't have an original reference point to work from could anyone advise if the inner box sill section comes off the floor pan at a slightly upwards angle or should it be horizontal?. The angle does not show up too well in the photos unfortunately. As you can also see the replacement box section inner sill has been roughly fitted with no attempt to cut the sill into shape, this has the effect of to bending the sill inwards. Any thoughts? Fitting Wadhams panels, full D-post and inner box sill.

Marked up the photo to show horizontal line and angle of sill.


Note the replacement sill fitted but not cut, just bent inwards and slipped up behind original cut sill.

Working my way towards the front bit by bit, but still got a lot of grinding and cutting out to do.
Cutting out relatively new metal is a pain. At least rust is easier to handle. Using a belt sander to grind down the existing welds which is excellent to use but still time consuming.


 
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From the original Automobile Engineer periodical as reprinted by Rover. The factory drawing for the sill cross-section.
https://scontent.fakl1-1.fna.fbcdn....=eedc55edad825d8603d832c89e2ec9c0&oe=5AF824EA

An interesting read thank you. Shows quite clearly the inner sill should be at right angles. I'll aim for that upon assembly.

Noted that the document mentions that the underside of the floor is a mix of asbestos (scary) and bitumen, and the welded pressings are sealed with Bostik GC118. I am looking for a suitable seam sealer as most modern seam sealers tend to react with the old bitumen based product and run.

that's irritating. Can you reuse the bits you've cut out?
Technically yes, but cutting out lots of little bits with my body saw and lots of welding runs would not look too pretty and will actually be worse than the sill I am taking off. A complete new sill in one piece is more sound in my opinion.
 
that's an interesting article, what is the link for the complete story?
Peter
It was scanned in and placed on the fredral rover Facebook page in November by, I think, Chris Wilson. Maybe if you message him he would put it on here. It is a fascinating and detailed engineering 29 page article on the 2000
 
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