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Ninja man



Member Since: 01 Feb 2020
Location: South
Posts: 36

Crossmember painting
Hi all, I have a 2014 90 and the crossmember has very light surface Rust colour in places,but not at all rough to the touch. What would be the best treatment to stop this turning into “proper “rust .

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Post #1009973 4th Oct 2023 6:59am
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TexasRover



Member Since: 24 Nov 2022
Location: Paris
Posts: 1073

France 2002 Defender 110 Td5 DCPU Chawton White
You are based where? It depends on what is available to you through regular channels.

You want a strong coat something like POR15 or a 2-pack system. These are typically gloss so depending on your preference you might want to give it a whiff of mat/satin black on top of your hard coating. Please note that typically any decent coating like that will have a short application window and cures in the pot and you prep and apply in one go.

It is also important to recognize that this is only cosmetic really as the rust will form inside the frame in fact it will rot from the inside as there will be buildup of dirt. There are different opinions but personally I like to apply a coat of something like Fluid Film which is a (fairly) natural product that needs regular reapplying as it does wash off. Easy to apply with spray can application.
Post #1009976 4th Oct 2023 7:15am
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Ninja man



Member Since: 01 Feb 2020
Location: South
Posts: 36

I think I should add I had the vehicle wax oiled from day one and I’ve applied acf50 every 6 months on outside to hopefully slow down rust.
Post #1009978 4th Oct 2023 7:32am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17417

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I've seen many Puma rear crossmembers which have done this, I am not convinced it is actually rust but it does look like it. I think it is some strange effect caused by whatever treatment was applied at the factory (which is odd because it only seem to happen to the rear face of the rear crossmember).

My 2007 110 did the same thing, and periodically (perhaps every 5 years or so) I clean the crossmember and repaint it usually with whatever I have to hand which is black.
Post #1010033 4th Oct 2023 2:30pm
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Ninja man



Member Since: 01 Feb 2020
Location: South
Posts: 36

Thanks for that, will be getting paintedthis weekend Thumbs Up strange why it looks rusty but it’s smooth like it had been painted on! Oh well
Post #1010188 5th Oct 2023 4:27pm
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Dinnu



Member Since: 24 Dec 2019
Location: Lija
Posts: 3414

Malta 2012 Defender 90 Puma 2.2 CSW Santorini Black
It looks to me that the paint used for the chassis has very poor UV resistance. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black
Post #1010191 5th Oct 2023 5:52pm
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