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Mossberg



Member Since: 29 Feb 2020
Location: Lancs
Posts: 553
United Kingdom 1993 Defender 90 300 Tdi HT Aintree Green
I don't think you could get anything isolated more from the chassis than the doors. I can't see any way one could affect the other as the only contact to the door is the hinges and locking mechanism- everything else is separated via a door seal.

A stainless steel door frame and outer skin is purely to protect the door, nothing else. If you see the corrosion in door frames you will understand this. I am surprised any defender owner would not get this to be honest.

With a stainless door I think the only issues you would have would be related to hinges, window mechanism and door locks. That's a big plus as far as I can see - but perhaps you feel otherwise?
Post #939502 25th Jan 2022 7:08pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3437
Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
The problem is that you can never get them 100% isolated. Once there is 'contaminated' water, the electrical path is done, and the ions can migrate. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #939504 25th Jan 2022 7:19pm
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Mossberg



Member Since: 29 Feb 2020
Location: Lancs
Posts: 553
United Kingdom 1993 Defender 90 300 Tdi HT Aintree Green
One mor thing is how different materials react to corrosion. Zintec is better than mild steel.
Pre-galvanised sheet is better than zintec.
Hot dip galvanising is better than pre coated sheets as everything gets coated (including the cut edges). Anything made from pre coated materials is likely to suffer where the edges are cut, but especially where they are welded. When you weld the sheet you burn off the coating then often the weld is made flat by grinding which removes even more of the coating which leaves it more susceptible to corrosion.

Through years of dealing with items manufactured from sheet metal, one thing I have learnt is how difficult it is to stop corrosion, which is why it is so much better to have items manufactured from a base material with a degree of natural resistance. Unfortunately these materials have their own issues such as increased cost of materials and a more difficult manufacturing process (which again increases cost).
Post #939510 25th Jan 2022 7:50pm
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