Rusty rally

[Rehan_Mogul]

You can count me in!

 

[Waz88]

This is a great idea, just got back from Mercedes Liverpool and there was a fair few rusty ones in there that customers had!!

 

[Chris wynn]

Some excellent comments in this thread, and 1 thing keeps coming through mb are meant to be cars of distinction backed up by their own reputation, plus their 3 pointed star which is meant to stand out from the rest of the car manufacturers.
The truth behind the brand falls far short of what we the buyer expect and deserve.

 

[Xtractorfan]

I was speaking to an insurance engineer yesterday and he told me he had just been to a recommended Mb body repairer a few days ago and the guy was showing him racks of ..mainly A class doors.. that had been replaced under warranty and were awaiting collection by MB..

 

[Chris wynn]

Are we about to see post 2003 mb cars starting to rust?

 

[Chris wynn]

Here's a question I would like to put to quite a few members in the know, when you have a rusty merc is it the metal at fault or the paint, and here's another question if I re-panel my v class with new panels and paint them as I think they should I.e prime base coat and lacquer, will it rust again just like before ???

 

[television]

Is it the metal or the paint,, many other makers use the same paint, so this leaves the metal.

I was parked up today at the rear of a Toyota / Lexus body shop. I had a good look at where the paint had come away due to the deformation of the metal and none that had the bare metal exposed for weeks had gone rusty, all of the bare metal was bright, and 100 time better than any metal on the rear of my 230.

I wish that I had my camera with me

 

[Xtractorfan]

Well initially the metal is of inferior quality, as can be seen when it does rust, it crusts and crumbles which is reminisent of the metal composition breaking down within itself.....It has been posted on here that mild steel has the slag removed during smelting, true but there are umpteen differnet brands of mild steel, depending on the end use...
Now it is also documented on here from publicity promos from Mb about their paint process, which in essence is similar to other non rusting 'end product' Motor manufacturers .. So the preparation process can be ruled out.. But I personally do believe that the process MB use is flawed in some way..even poor quality metal can protected from rusting ...Much blame is attributed to water based paints, and no doubt, water bourne paints will cause metal to rust if applied directly to bare metal, But no one in their right minds would do this...
The only protection a car has from rust is the first Phosphate or acid dip that coats every nook and cranny and basically seals the metal from air and dampness, the two elements that cause rust, subsequent paint coats offer protection, but are porous and will allow air and condensation to attack the metal over a period of time..

 

[WDB124066]

I doubt very much it will be the metal, it will be the coating they put on the metal, be it zinc based or whatever......

 

[television]

I doubt very much it will be the metal, it will be the coating they put on the metal, be it zinc based or whatever......

The panels are dipped twice I put up the whole process on the ML rust thread

As Xtractorfan MB metal breaks down and it separates when rusty and it falls away in layers. the cars that I saw today will never do that

 

[WDB124066]

Highly stressed metal will corrode at a faster rate than metal not so highly stressed. This effect can be seen in pressings. I honestly think you will find it is not the metal at fault here. It will be the coating, be it not as protective from a sacrificial standpoint. Muck metal won't find its way into European or Japanese cars as a matter of course.

Metals in cars are alloyed to give high tensile properties, some alloying elements i.e. Chrome and Copper will assist to prevent corrosion, but by far the most effective will be a coating with sacrificial qualities, this will prevent corrosion even once the coating has been locally removed. What type of coating and how it is applied is the secret here.........

 

[Frontstep]

http://www.corrosion-doctors.org/TestingBasics/B117-Bogus-1.htm

Method SAE J2334

A test as above seems to be a way to settle this do we have any lab scientists willing ?

 

[Xtractorfan]

Without proper scientific analysis it would be unwise and silly to make assertions as to the problems that lead to rusting of MB cars..
The only sure fact that is known is that they rust prematurely, possibly one could say twice as fast as any other car out there..
There was a time when British cars rusted away and the blame was attributed to severe winters and salt on the roads, and who could argue, then when motorists got a bit more educated as to the possibility that the manufacturers were maybe not using quality steel or even protecting it properly, the blame for corrosion then went technical, and was attributed to the Frame of the car being positively charged,.. It was quite a thing I remember changing the polarity on cars..

 

[television]

the blame for corrosion then went technical, and was attributed to the Frame of the car being positively charged,.. It was quite a thing I remember changing the polarity on cars..

Are you as old as me

So simple, turn the battery round, turn on and hold down the cut out for a few seconds, this reversed the dynamo field and all done.

 

[Chris wynn]

Anyone seen the new Vauxhall advert ? It states a warranty that could last a lifetime, potential buyers of vauxhalls should read these posts !

 

[Frontstep]

Having got one of these cars with the rust promoting paint or maybe rust inducing paint R.I.P
I think its the steel thats the main problem it just disintegrates if left untreated, in a way thats reminscent of some Lancia's and Alfa's of my youth.
The link below leads to released American Government files that charts the use of poor quality USSR steel sent to Italy in a complicated deal.

http://history.state.gov/

 

[television]

Having got one of these cars with the rust promoting paint or maybe rust inducing paint R.I.P
I think its the steel thats the main problem it just disintegrates if left untreated, in a way thats reminscent of some Lancia's and Alfa's of my youth.
The link below leads to released American Government files that charts the use of poor quality USSR steel sent to Italy in a complicated deal.

http://history.state.gov/

Yes agreed, MB cars rust so that the lumps come of in large flakes where the rust is in the metal, its as though it is self destructing, a tin can left out in the rain will get rust all over it, but most would sand off and this is not the case with MB metal.

Many rust marks on our cars MB put down to stone chips, So why do I have no stone chips on my V70R, I do not drive that any differently to the MB.

 

[dieselman]

I was parked up today at the rear of a Toyota / Lexus body shop. I had a good look at where the paint had come away due to the deformation of the metal and none that had the bare metal exposed for weeks had gone rusty, all of the bare metal was bright, and 100 time better than any metal on the rear of my 230.

It will be good because Toyota galvanneal their bodies. I have inspected deformed galvanised Mercedes panels that have been exposed for weeks and seen the same.

 

[WDB124066]

Don't get too focussed on the steel itself Gents, even Weathering Steels corrode without proper protection from coatings, design, suppression systems, etc etc.

http://en.wikipedia.org/wiki/Weathering_steel

 

[television]

Don't get too focussed on the steel itself Gents, even Weathering Steels corrode without proper protection from coatings, design, suppression systems, etc etc.

http://en.wikipedia.org/wiki/Weathering_steel

Then how about this one
http://rustymerc.com/