325i Touring resto thread - damp footwells

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Grrrmachine
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Sat Mar 31, 2012 7:50 pm

Slowly working my way around the car, it was time to return to the front wing, but the other side this time. I knew there was a bit of rot under there, but fortunately not on the same scale as the driver's side.

Rather than a mass of orange rust, I was treated to lots of little holes that needed to be dealt with individually. The first was the "jacking point", which someone had tried to use as such:

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so out came the angle grinder:

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and in went the repair patches, expertly crafted this time since I'd had the practice on the other side:

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there was also the depressing sight of the brake hose mounting tab, which had started rotting away around the mount. This is where the inner wing skin meets the chassis rail, so it had to be cut out in two parts:

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and two small panels let in with an overlap. They'll be spot-welded together in due course (well, plug welded) when the bracket is clean and ready to go back on.

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But the worst part was the leading edge of the wing, where it joins the tray that sits under the windscreen washer fluid tank. The tank had obviously leaked many times in the past, and the fluid pooled in the tray, rotting it out from the inside. It's barely noticeable from the engine bay and invisible with the wheel arch liners in place, but once the plastic liners are removed, the extent of the rot becomes apparent:

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and once the metal was cut away, you could see that the tray itself was suffering around the lip:

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Now, I could do this the proper way and cut out all of the spot-welds and let in a new tray for the princely sum of 20 quid, but a) I didn't want to wait b) it's really fiddly cutting out all of those welds and c) I'm a pikey. So I cut out the rotten bits and made up some more repair patches:

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Add into that a small repair to the side of the chassis rail, and it was time to re-skin the bottom of the wheel arch with fresh steel. That should keep the orange devils at bay for a little while longer:

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capri_rob
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Sat Mar 31, 2012 9:06 pm

Excellent work

Mine needs attention under the washer bottle too and I suspect under the ABS pump on the other side - but as its still in one piece with no holes ( albeit a little crunchy :eek: ) it will have to wait until respray time when I get the rear valance attended to as well.

E30's. Its never fookin ending :mad:
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e30topless said : Proper BMW's have 4 headlights, last of the run was the E30 and E34/E32 anything after that is just complete shite
Grrrmachine
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Sat Mar 31, 2012 9:48 pm

It is disheartening. Every weekend I get back in from the garage and tell the woman "Darling, don't worry, there's just ONE more spot of rust to deal with, and then it'll be done." And then I spot that the sill has got a rusted seam by the front jacking point, and that'll be another three repair patches to go in, minimum :cry:

And I'm running out of sunroof to make my repairs with!
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Jozi
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Sun Apr 01, 2012 3:37 pm

Both my tourings had gone on the same place, seems to be common. I can completely relate to "there's just ONE more spot of rust to deal with" even with so much of the sealer stripped back I still find the odd bit of rust :evil: Keep up the good work!
Grrrmachine
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Mon Apr 09, 2012 8:48 am

Just one more spot of rust!

It seems like I've spent the entire winter sitting on my arse on the cold concrete garage floor. On the plus side, I haven't got piles but on the down side, I keep finding more and more rust. This final bit is the PROPER jacking point on the passenger sill:

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Unfortunately the complex shape just attracts rust, and it starts crustifying over time. A wire cup on the angle grinder showed how thin the metal was, so it was time to chop it all out.

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Fortunately, the inner wing and the sill reinforcement were rust-free, so I wouldn't have to go about fabricating any special bits. But since this is also the seam where the A-piller section meets the proper sill, I decided to do the repair justice and put in two overlapping pieces, just like the original. This will make future repairs easier if I need another sill in, say, ten years' time.

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So in went the first piece, with a step joddled (who am I kidding; smashed in with a chisel) for the overlap. The technique I used was to then spot-weld the next section to that step first, then push it in to line up with the sill on the right-hand side. This means that I know the spot welds are strong, the overlap is tight, and that the repair won't be so sunken from having to push the two parts together afterwards.

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Then a rub-down with the flappy disc to show up any parts that didn't get proper penetration (there were a few), deal with them, and coat the whole stuff in anti-rust!

SUMMARY: Seven months of welding, one month of bush and brake repairs, 45 new pieces of metal in 19 different places, and no more sunroof:

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Grrrmachine
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Sat Apr 28, 2012 5:31 pm

Just one more bit :x

While fitting a new fuel tank, I noticed a little bit of orange around the hard fuel lines. It was at the bottom of the new sill that I'd paid someone else to fit two years ago; that's one year on the road, one year in this garage. So I put the wire brush on the angle grinder to see how bad it was...

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NOT a happy bunny! The garage I had paid to fit a brand new outer sill had done just that; slapped the new outer over the existing rust, and slathered the rear of it with seam sealer to mask the crusty bits.

There was no other option but to get the slit discs out, and remove the outer sill to see how bad the damage was:

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A lot of curse words were used at this point. The idiots hadn't bothered to remove any of the rusty inner sill when they'd had the chance to do so, and now it had festered to a dangerous point. At the front end, there's hardly any material left for the floorpan to affix to, and under the B-pillar is a horizontal support beam that is now attached to f-all.

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Cutting and grinding got me back to clean metal. Fortunately I was below the spot-welds at the rear end, but the front section is essential to put some rigidity back into the floor. So some fresh 1mm sheet was used this time (no sunroof) to make a repair length - 1.16m long. At least my welds are coming out a hell of a lot neater than they used to...

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An afternoon with the MIG got it all seam-welded to the existing inner sill, then plug welds where the original spot-welds were.

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Then it's time to offer the outer sill back up. This is how I chopped out around the B-pillar, so that I wasn't too close to the original seams.

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And the outer sill going back on. Now it's just a case of welding the sides up flush, and putting the plug welds back in place top and bottom. And that had better be it!
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Sat Apr 28, 2012 10:51 pm

I would have weighed that in by now! :eek:
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Sat Apr 28, 2012 11:30 pm

I would have quitted by now! :eek:
Grrrmachine
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Sun Apr 29, 2012 7:34 am

Poland wasn't on the map for 123 years, but they never quit fighting to bring their flag back. So I'm not giving up on this rusty turd :D

I've got 8 days off work, a garage full of tools and a fridge full of beer. I'm going to get this shell finished if it kills me :!:
capri_rob
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Sun Apr 29, 2012 7:41 am

Bloody awesome work - keep it up ! 8)
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e30topless said : Proper BMW's have 4 headlights, last of the run was the E30 and E34/E32 anything after that is just complete shite
Dezzy
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Sun Apr 29, 2012 10:03 am

Grrrmachine wrote:Poland wasn't on the map for 123 years, but they never quit fighting to bring their flag back. So I'm not giving up on this rusty turd :D

I've got 8 days off work, a garage full of tools and a fridge full of beer. I'm going to get this shell finished if it kills me :!:
Hats off to you then I think?! :D
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Jozi
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Sun Apr 29, 2012 7:12 pm

Dezzy wrote:
Hats off to you then I think?! :D
Definitely! I've had moments where I though I should have given up but this would have killed me! At least now you know it's done and done right!
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Sun Apr 29, 2012 8:37 pm

You are a true legend mate!
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Grrrmachine
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Sun Apr 29, 2012 9:20 pm

Cheers for the comments guys. Unsurprisingly, I ran out of Argon mix just as I was finishing off the welding round the B-pillar so the job will be finished off tomorrow. Typical...
Dezzy
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Sun Apr 29, 2012 10:05 pm

There is nothing more annoying is there?!

It always runs out when your cracking on. Never at the start or just as you've finished.

I hate having to stop in the middle of a job!
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Grrrmachine
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Mon Apr 30, 2012 6:08 am

This was close to the end, which makes it even more frustrating. Oh well, the gas supplier is at the end of my road, and the scrap man is on the way so I can drop off this bucket of rust I've collected during the project.

And the rusty doors, and the old springs, and the sunroof, and the fuel tank, and the bonnet...

EDIT: 5 quid for 40kg of scrap. What is the world coming to...
Grrrmachine
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Thu May 03, 2012 5:02 pm

Now all the rust has been attended to, it's finally time to strip the shell back and attack all the little knocks, dings and dimples in the sheet metal. So the car got naked in the sun...

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and I spent the day applying filler and rubbing it back by sand. Fill, sand, fill, sand, stopper, sand, stopper, sand.... tedious.

But now the path is clear to finally shoot some primer!
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Thu May 03, 2012 5:22 pm

You are a very sick man , but at least it is not a quattroporte ! :)

Hopefully I am wrong , but It appears that you haven't made allowances for any sill drainage points on your new inner sill . Be sure to address this as otherwise you can look forward to the sound of lots of sloshing water and wet carpets . Just like the zoner who has paid a well known 'specialist' in Somerset lots of money to carry out similar repairs to his touring ! :(
Grrrmachine
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Thu May 03, 2012 5:50 pm

Yeah, I dealt with that before the outer sill went back on; fortunately they were present on the other side so I got the locations in exactly the same place, and then prised out an opening with some pliers.

325i Tourings are hens teeth over here and command a fair price, and it's a 325i on paper already. With a good solid shell to base it on, I just have to make the engine match the paperwork :twisted:

To start with, here's the Hartge manifold lined up for test fitting :D

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kitch
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Thu May 03, 2012 7:55 pm

I bet you're excited. I love this stage, just prepped for paint :)
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Grrrmachine
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Fri May 04, 2012 12:30 pm

At some point in the car's dubious history, the rear wheel arch had taken a knock and been repaired. But the copious amounts of filler had cracked over time, and the angle grinder uncovered just how thick it was. Here's the 5-8mm depth I exposed last October:

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I'm no expert with the hammer and dolly, but I'm sure I could reduce that depth with some delicate fettling. There was also a spot of rust to cut out and deal with, which I did, and then I stripped the entire arch back, got it as straight as I could and then re-applied the filler:

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Once the curve was set out, it's a long, tedious process of flatting it all back with progressive grains of wet-and-dry sandpaper. If you're interested, it was 80 dry for shaping, 120 dry for cleaning up, 150 wet and 240 wet to polish it up, with applications of finishing filler to get it properly smooth. So now it stands like this:

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THAT'S a properly curved arch. I knew all those right-handed sessions as a teenager would pay off some day.

Then to get the sill repairs smoothed out in a similar way, to cover up the welds...

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and that's a lovingly hand-shaped E30 with all her original curves :D And the colours give me a craving for ice-cream...
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redcar
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Fri May 04, 2012 6:11 pm

I do enjoy this thread...nice work mate.
kitch
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Fri May 04, 2012 6:33 pm

I'm loving reading this thread atm. My car is in similar stages and almost ready to pick up so it excites me :) haha. The work and love going into this is awesome mate, hats off!
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Grrrmachine
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Thu May 10, 2012 7:14 pm

This post is a bit dull, since it's just shots of the car in VERY fresh primer.

First off, cocooning the car into a plastic pod.

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My garage isn't enormous, so I have to do my best to squeeze everything in. There's a freshly-painted valance and bonnet sitting in my basement, and there's no more room to store panels so the old rusty ones have to stay on the car during the paint job. So I masked off the front end and got to spraying.

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The bonnet was up when I sprayed, but ensuring that the scuttle and windscreen lip got fresh paint was important. The door jambs not so much, since all I'd done was keyed the existing paint.

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But the back end got a much stronger dose. Due to lack of space I couldn't take the tailgate off and store it, so I couldn't spray it separately which means it had to be masked off and done at the same time as the shell. But it worked out fine in the end.

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The only issue was manouvering around when the tailgate was at eye level. I got one clout on the painting helmet from the corner of the tailgate, and it bloody hurt.

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But all those arch repairs paid off; this side came out really well. There's one scratch visible that needs a little bit of filling, and I'm sure I'll uncover some other minor lumps and bumps that need to be dealt with in due course, but I'm just so chuffed to be working on painting again after all that welding :D
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Thu May 10, 2012 7:52 pm

pacerpete wrote: a well known 'specialist' in Somerset
Arrrrrrrrrrrrrrrr!!
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Thu May 10, 2012 7:59 pm

Harold
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Thu May 10, 2012 10:42 pm

Cracking work Grrrmachine.. Very inspiring.. It must feel good to get the primer on after some serious welding undergone..
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Thu May 10, 2012 11:13 pm

Coming along nicely now.
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Thu May 10, 2012 11:37 pm

Good effort! Impressive stuff..
Got cable ties? Get diffin..

Arch roller for hire.

www.zeroexhausts.co.uk

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Grrrmachine
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Fri May 11, 2012 9:00 am

Must admit, without the Zone I would have thrown my toys out of the pram a long time ago. So cheers for the support gentleman, and hopefully the next update will be about paint!
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Mon May 21, 2012 4:18 pm

Rubbing down primer is an absolute chore. I had an electric DA sander which worked wonders on the roof (400grit, if you care), but everything needed finishing off with 800 wet sandpaper, including all the nooks and crannies of the door jambs.

So after many evenings with repetitive strain injuries, it was time to wheel the shell out of the garage for the last time...
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to dust her down, clean out the garage and prep everything for paint. I've now learnt to hate masking up a car, as it's fiddly, boring and frustrating when you just want to fill up your gun and shoot some paint.

But it all came together in the end, and after three basecoats and four clearcoats, I let the mist settle to admire my handiwork...
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There's quite a bit of denibbing to do, one paint run to rub out and a small repair to do, but that's the big work done.

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and I'm in no rush to do another home spray job, after all that!
capri_rob
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Mon May 21, 2012 7:48 pm

Looking good :cool:
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e30topless said : Proper BMW's have 4 headlights, last of the run was the E30 and E34/E32 anything after that is just complete shite
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Mon May 21, 2012 9:02 pm

Awesome, truely awesome!
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Mon May 21, 2012 9:54 pm

more pics!
Grrrmachine
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Sat May 26, 2012 6:03 pm

This weekend, it was time to push the old girl out of her cocoon to enjoy the sunshine. So here's the fresh paint in its summer glory:

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And this is the hand-sculpted arch in all its glory. It's a liiiiittle wobbly close up, but I'm chuffed enough :D

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Now, it was the car's birthday on the 24th, and it's mine on the 27th, so I decided to treat the two of us to something special. An M20B25 was ordered this morning, and will be delivered next weekend, so I need to make room for it under the bonnet. And that means...

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Yep. Exhaust off, everything stripped, and with a brand-new engine hoist (a last-minute bargain) I got the sorry M20B20 out. It had snapped its cambelt six months ago, so I'm glad to get it out of the shell and out of sight.

And with not much time or space to work in, I need to prep the unloved engine bay for fresh paint!

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