Just had an MOT failure and both sills need replacing, how easy is it
to fit the sills can it be done at home or do I need to take it to a
specialist.
I am in the UK home of the mini, the greatest car in the world,.
Jono Barspeed - 19 Oct 2003 17:29 GMT
If you a have a Mini that is special, locate a damn good welder that will
ensure that the job is done right! for about ?200.
If you just want an MOT to get you mobile and you arent too concerned if the
welding will last for the next MOT, take it to your local garage that will
charge about ?100 for the pleasure.
A good welder will attempt to remove as much of the old sill as possible and
not only replace the sill but also put in a bit of new metal so the job will
last several years.
The garage will fit an over sill, covering the old sill you have already,
with this technique the new sill will sooner or later rust thru.
Jono
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> Just had an MOT failure and both sills need replacing, how easy is it
> to fit the sills can it be done at home or do I need to take it to a
> specialist.
>
> I am in the UK home of the mini, the greatest car in the world,.
TurboJo - 19 Oct 2003 19:34 GMT
It is relatively easy as long as it is just the sills that need replacing.
You will need a MIG welder an angle grinder with cutting discs and grinding
discs.
Cut the old sills off with an angle grinder. Remove any of the metal that is
left after cutting by grinding off the spot welds or seam welds. You are
aiming to get a single thickness of metal on the joins after the sill is
removed.
Tidy up any rust etc now visible give it a coat of zinc primer. To try and
stop rust reappearing.
Clamp the sill tightly in place
Weld the sill on as the originals were spot welded 1" tack welding or plug
welding will be allowed by the MOT man.
Give it a coat of stone chip.
You should be able to do it in a weekend.
I have some pics of mini with sill off at www.wannop.co.uk
Cheers
> Just had an MOT failure and both sills need replacing, how easy is it
> to fit the sills can it be done at home or do I need to take it to a
> specialist.
>
> I am in the UK home of the mini, the greatest car in the world,.
Steve - 20 Oct 2003 17:57 GMT
> Weld the sill on as the originals were spot welded 1" tack welding or plug
> welding will be allowed by the MOT man.
Is that right? I always thought the sill seam was continuously welded from
the factory. I believe the prototypes were totally seam welded using a
roller resistance method. But this, along with most of the car, proved too
expensive.

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Steve
steve@dsnclassics.co.uk
www.dsnclassics.co.uk
Dave Yardy - 20 Oct 2003 19:12 GMT
> > Weld the sill on as the originals were spot welded 1" tack welding or plug
> > welding will be allowed by the MOT man.
[quoted text clipped - 3 lines]
> roller resistance method. But this, along with most of the car, proved too
> expensive.
Original sills are spot welded.
Oversills, as they are classed as a repair panel, need to be seam welded.
NEVER EVER USE OVERSILLS - They are evil and will rot your car out...
Do the job properly...
TTFN,
Dave
captain scarlett - 21 Oct 2003 14:34 GMT
>> > Weld the sill on as the originals were spot welded 1" tack welding or
>plug
[quoted text clipped - 14 lines]
>TTFN,
>Dave
Thanks for all the info, I will have a go myself and I intend to do it
properly and remove the old sills. What now confuses me is if I fit
new sill and not over sills will it pass the MOT if only spot welded
on. I have had a good look at the sill and it seems to be spot welded
on the seam running from wheel to wheel bottom of the door,but what do
I do when I have to weld it to the floor where there is no seam, and
another silly question how do I clamp it to the floor.
Steve - 21 Oct 2003 15:00 GMT
> Thanks for all the info, I will have a go myself and I intend to do it
> properly and remove the old sills. What now confuses me is if I fit
[quoted text clipped - 3 lines]
> I do when I have to weld it to the floor where there is no seam, and
> another silly question how do I clamp it to the floor.
Stitch welding with a MIG is fine along the floor. Just push up with a small
jack, weld that area. Then move the jack along and repeat until the whole
length is done.

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Steve
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k - 21 Oct 2003 22:31 GMT
> > Thanks for all the info, I will have a go myself and I intend to do it
> > properly and remove the old sills. What now confuses me is if I fit
[quoted text clipped - 15 lines]
>
> Hi,
I fitted new sills to a customer's car a while back, and believe it or not,
I removed three old sills from one side and two from the other. These were
underneath the "oversills" which had been fitted by some bodger in the past.
k
Steve - 22 Oct 2003 09:39 GMT
> > Hi,
> I fitted new sills to a customer's car a while back, and believe it or not,
> I removed three old sills from one side and two from the other. These were
> underneath the "oversills" which had been fitted by some bodger in the past.
>
> k
lol...... that's one way of lowering the suspension!
In a similar way, we had a customer who fitted 2 front floors into each side
of the car. One from the top and the other from underneath..... to make it
'nice and strong'!!

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Steve
steve@dsnclassics.co.uk
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