Pagoda SL Group

Off Topic => Other cars => Topic started by: dseretakis on November 02, 2012, 02:36:19

Title: My mainly 240D rust repair blog
Post by: dseretakis on November 02, 2012, 02:36:19
Check it out. Hopefully, I can get to my Pagoda's rust repair needs soon as well!

http://stricht8.wordpress.com
Title: Re: My mainly 240D rust repair blog
Post by: mdsalemi on November 02, 2012, 11:11:27
Nice work on the 240D!
Title: Re: My mainly 240D rust repair blog
Post by: w113dude on November 02, 2012, 11:19:13
That is some good cutting & spot welding, I wish I had the patients to do tedious & clean work like this, I'm sure your sl will be very happy in your hands.
Well done,
Title: Re: My mainly 240D rust repair blog
Post by: waqas on November 02, 2012, 13:04:47
Nice blog (and work)-- looking forward to updates.

Just curious: would it not have been easier to simply swap doors? (since the donor was a the rust-free car)
Title: Re: My mainly 240D rust repair blog
Post by: w113dude on November 02, 2012, 21:04:05
Quote
Just curious: would it not have been easier to simply swap doors? (since the donor was a the rust-free car)

Yes, much easier but no challenge? ;)
Title: Re: My mainly 240D rust repair blog
Post by: Bonnyboy on November 02, 2012, 22:13:53
Wow, that is nice work.   My welds don't turn out like that.     Must be my welder, not the fact that I'm very impatient.

Well done. 

Reminds me of the story where Arthur Rubinstein was approached in the street near the Carnegie Hall in NY by a man who asked, "Pardon me sir, how do I get to Carnegie Hall?“; to which he replied, "Practice, practice, practice!”.
Title: Re: My mainly 240D rust repair blog
Post by: mdsalemi on November 03, 2012, 00:02:44
since the donor was a the rust-free car

How about swapping cars?? ;D  Seriously, great work and thanks for sharing.
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on November 03, 2012, 02:09:52
Thanks all!  Yes, swapping the door would have been easier, but being an impractical purist (when it comes to my cars), I like to retain as much original sheetmetal and paint as possible.  This includes paint on the inside of the door!  I actually repaired the rusty front passenger side door on this same car three years ago.  At that time I took things a step further and fabricated the patch.  I'm never doing that again.  I consider cutting a piece from a donor car "cheating" in comparison.
Have a look here: 
http://stricht8garage.shutterfly.com/
Title: Re: My mainly 240D rust repair blog
Post by: star63 on November 03, 2012, 09:55:07
Beautiful !!!

...and these are just for transporting, right?... ;D
Title: Re: My mainly 240D rust repair blog
Post by: GGR on August 10, 2013, 20:29:12
Dimitri has gold in his hands, I'm not sure he realizes it! Just needs to spend more time on the Pagoda which is in need of help.

Dimitri, you need something like this : http://www.autoblog.com/2007/09/16/who-needs-to-lift-a-car-when-you-can-tilt-it/ 

You could also consider the Joe Alexander method, I read he is lifting the cars on the side. When you decide doing some serious work on the Pagoda, let me know. I will come and help you take all the mechanicals parts out as per needed.
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on October 27, 2014, 13:29:03
I'm now doing a long overdue front shock mount and jack point repair on the 240D.
Here are some photos of the rust:
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on October 27, 2014, 13:41:20
Once font fender was removed rust was found between some mating surfaces involved in shock mounting area. Spot welds drilled out, metal between mating surfaces was cleaned of rust by grinding and naval jelly applications. POR-15 and weld through primer used before panels plug welded back together.

Also seen is the shock mounting area I cut out from a scrap yard. This will be grafted into my car once the area is cleaned up. The panel is being prepared here.
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on October 27, 2014, 13:46:42
Here I'm starting to clean up rust in shock mount area by methodically cutting out compromised steel. Notice the upper control arm visible through the hole. This car is so overbuilt that I've been driving it for years with this amount of structural compromise. Amazing!
Title: Re: My mainly 240D rust repair blog
Post by: GGR on October 27, 2014, 13:57:20
Amazing work Dimitri! However, with that amount of structural rust, you have to make sure that the suspension anchoring points are still located precisely where they should, as years of pounding on a weakened structure may well have put it out of shape. I guess by presenting your cut out patch on the car will tell you if something is wrong. If it aligns perfectly I guess you're good. If not, you need to start looking where the issue is. 
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on October 27, 2014, 14:08:04
The spring perch and shock mount are intimately related and made from a super thick steel stamping which has not been compromised yet. The shock mount area above and adjacent to this is what has completely rusted but doesn't appear to have changed the geometry of the front end. Again, testament to how overbuilt this car is!
Title: Re: My mainly 240D rust repair blog
Post by: GGR on October 27, 2014, 14:19:04
Overbuilt, and bio-degradable! They really were thinking ahead of their time!
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on October 27, 2014, 14:29:43
Haha. The w123 diesels are astonishing cars. You know 1000 years from now when the world is over as we know it due to natural disasters and nuclear holocausts, what will be left are cockroaches eating twinkies and driving 240Ds:)
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on October 27, 2014, 14:31:48
Come on now Gael, we all know that you have a secret w123 diesel fetish:)
Title: Re: My mainly 240D rust repair blog
Post by: GGR on October 27, 2014, 14:33:38
Oh no! 240Ds driven by giant cockroaches! What a fate!
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on November 12, 2014, 11:55:35
Here's some more progress. I tacked in the patch panel then welded it all up and metal finished the seams.

Title: Re: My mainly 240D rust repair blog
Post by: johnk on November 12, 2014, 14:01:29
dseretakis,
Beautiful work. Inspires me want to start my 280 right away. I need some advice though. I have not restored a car for over thirty years, and when I did I used lead for any important repairs. I see that you re-sculpture the metal by building it up with addition steell added by the MIG welder, which has to be time consuming and hard to shape. I don't have much skill yet in the area of welding. Is there an advantage of adding steel over using lead? I have a lot to catch up on current techniques.

I appreciate any advice.

thanks
John K
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on November 12, 2014, 14:45:25
Thanks John. I don't have any experience using lead yet but I'd like to learn.  My lack of experience with lead  is part of the reason why I use mig and sculpt it. I know that it is common practice to add metal by welding to correct panel gaps but sharp contours are probably better created using lead. There are also some pretty impressive plastic fillers available today if you wish to go that route.
Title: Re: My mainly 240D rust repair blog
Post by: GGR on November 12, 2014, 15:10:01
Dimitri,

impressive job! (I already see the giant cockroaches, in 1000 years from know, bent over the engine bay of your car eating their twinkies go "Ah, these humans, they really knew about craftsmanship. They don't make them like that anymore!").
 
... but sharp contours are probably better created using lead. There are also some pretty impressive plastic fillers available today if you wish to go that route.

That is an interesting question. I think lead was used a lot in older times. But what is the correct technique on a Pagoda in need of repair? The notches next to the headlights were shaped out of lead apparently, so lead is still relevant on a Pagoda. But what about repairs? What were the methods used in the 60s and early 70s? When a Pagoda gets restored, should we use repair techniques that are period correct? Or take advantage of newer ones? Where does lead fall among this?
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on November 12, 2014, 16:11:54
I'm starting to think that I'm the giant cockroach now especially after picking up another 240D!
I would use lead to recreate the fender notches. Let's not forget that all the heat generated from welding does not do kind things to sheetmetal ( shrinking, warpage etc.)
Title: Re: My mainly 240D rust repair blog
Post by: johnk on November 12, 2014, 22:49:58
Lead was actually the repair method of choice before bondo came on the scene. I don't know when the transition occurred, but I do know when I started restoring cars in high school and college in the mid 70's, lead is what the old timers and quality restorer's used. I learned to use it to for the classic cars I was working on, but I was no where's near as good as the old timers. They used all lead and no bondo. The best I could do was to get it close with lead and then finish off with a thin coat of bondo. Of course back then I was not aware of TIG and MIG welders being used on sheet metal. I only had a torch and braising rods, and would coat any seams with lead before applying bondo as the flux from the brass rods often reacted with the Bondo causing bubbles down the road.

I am assuming modern day body fillers are much better than when I used them, and do not shrink six months after the car is painted like they use do. A perfect bondo finish would often become slightly visible as time elapsed. If anybody has any input on this subject I would greatly appreciate it as I am getting ready to start my first project in almost 30 years.
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on November 13, 2014, 12:33:15
My expertise lies in metalwork specifically related to rust repair so I cannot offer great advice re fillers and general bodywork, painting. But from my observations as a hobbyist, I would use lead to cover seams and define sharper edges. I would then do my best at getting all sheetmetal as close to perfect as skills permit and then skimcoat everything with a high quality plastic filler and block sand.
Title: Re: My mainly 240D rust repair blog
Post by: johnk on November 14, 2014, 03:00:53
That's pretty much what i am reading as I look into it. Thanks
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on October 24, 2015, 22:14:40
This month I've been tackling some more rust on the 240D. I started exploring the rusted right side rocker panel and front jack point only to find floor pan rust! The rust is located along the edge of the floor on the sill side.
I fabricated and welded in the front section so far:

Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on October 24, 2015, 22:18:14
And here it is tacked in place and finally all welded up.
Title: Re: My mainly 240D rust repair blog
Post by: Benz Dr. on October 25, 2015, 19:14:45
I could understand if this was a 300 turbo coupe, but a 240D? Why???

  Nice work though and I suppose it's good training for 113 work later on. Lead is very toxic stuff and that alone is why it's not used much these days. Most body men can't work with it, paint and primer often won't stick to it, and modern fillers are considerably better in most regards. Back when lead was commonly used, mig welders weren't used very much for body work and most panels were brazed on or the really good body men used a small torch to fuse panels together. Done properly, no filler rod is used and no body filler is even needed to finish the seam.   
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on October 26, 2015, 14:36:08
I don't care much for automatic w123's. A manual everything 240D in a cool period color like China Blue is the holy grail of Mercedes diesels!
Title: Re: My mainly 240D rust repair blog
Post by: Benz Dr. on October 26, 2015, 17:31:52
Did they not make 300D's in standard? I have a number of rusty old 123's and I agree they're nice cars but I kind of like the 126 better. I'm 6'3'' so I like the extra room. I do like our turbo coupe though.
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on October 27, 2015, 02:30:13
A non turbo 300D was available in Europe with a manual transmission but the turbodiesels were only ever made in automatic.
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on November 21, 2015, 13:59:05
Here the front passenger floor pan repair is complete. I did not bother to metal finish the weld seams as this area is not visible and the car is valuable enough to justify the effort!
Title: Re: My mainly 240D rust repair blog
Post by: GGR on November 21, 2015, 14:31:28
That's a strange place to rust, on top of the rocker?

Did you fix the top of the front right inner fender?
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on November 21, 2015, 15:14:11
It's actually quite common on the w123 as the rocker is spot welded to the floor pan. Water and salt intrusion into this seam leads to the rocker and floor pan rusting simultaneously. Water intrusion into the cabin also facilitates rust in that area from the top side.

Top of right front inner fender/shock tower area is fixed.
Title: Re: My mainly 240D rust repair blog
Post by: GGR on November 21, 2015, 16:43:02
Ah! Yes, previous page! I'm getting old!
Title: Re: My mainly 240D rust repair blog
Post by: cabrioletturbo on November 21, 2015, 16:52:27
First time I bumped onto this thread, this is some fine welding, dseretakis!
Title: Re: My mainly 240D rust repair blog
Post by: Benz Dr. on November 21, 2015, 20:18:08
When ever I talk to high end restoration shops about their competition at judged car shows, they always point to home restored cars. The owner has all of the time he wants to get it perfect without paying someone to do it, which is very difficult to compete with.
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on November 22, 2015, 14:21:30
For cars with little value such as a w123 diesel this is definitely true. The number of hours that I've put into this car far exceeds its value if translated into an hourly rate. When it comes to high value cars that require a different standard, the super high end shops are usually equipped with tools and facilities that are out of reach of your average home restorer.
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on April 23, 2016, 13:13:36
Gael will crucify me for continuing to spend my efforts on w123 diesels but my excuse this time is that it's not my own! It's my neighbors car!

The right rear quarter was replaced years ago by a collision shop. Clearly they payed no attention to corrosion protection when they reinstalled it. The result was that the rear apron, quarter panel itself, trunk floor and outer wheel arch to which it was attached all rusted prematurely. Here are some shots of my work so far.
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on April 23, 2016, 13:16:12
More:
Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on April 28, 2016, 22:30:30
Welded between the tack welds and metal finished:

Title: Re: My mainly 240D rust repair blog
Post by: dseretakis on April 30, 2016, 01:28:15
Lower quarter panel patch section tack welded in place.