Body Corrossion............

natas · Nov 24, 2010

I live in the bahamas and am used to seeing cars and other stuff rust.

However I have never witnessed aluminium corrode as much as this 90 is
I have owned a couple aluminium boats, my dad had a couple Cessna airoplanes, also aluminium and yes they did corrode but nothing like this 90.

When she arrived she had a couple small spots here and there but now its amazing how its spreading.

The rear end is a mess, down where the rear crossmember and body meet is now starting to crumble and turn to white dust on the edges.

All four wheels where the mudguards meet the body are covered in bumps of corrossion.

Is there anything that I am doing wrong?
The truck sleeps in a dry garage and seldom sees rain. Its kept clean.

What can I do to slow it down or do I just let it rot?

Help!

Thanks.

hughesy · Nov 24, 2010

It's electrolytic corrosion caused by two different metals meeting. ie aluminium and steel. Have you been driving on the beach or in the sea? It'll get a lot worse a lot quicker if you have.

natas · Nov 24, 2010

Have been on the beach a few times, not in the salt water .

Im thinking I may bring in some of these chemicals http://www.skygeek.com/chemetall-ardrox-av40.html and treat it myself then get a flat paint job so that I can keep touching it up.

At this rate I will be riding around on a chassis in a couple years.

Thanks.

jak1471 · Nov 25, 2010

natas said:
Have been on the beach a few times, not in the salt water .

Im thinking I may bring in some of these chemicals Chemetall Ardrox AV 40 Corrosion Inhibiting Compound and treat it myself then get a flat paint job so that I can keep touching it up.

At this rate I will be riding around on a chassis in a couple years.

Thanks.

Driving on a beach will make it 10x worse as there is still lots of salt inthe sand that you have just sprayed over your 90 particularly the back end. The salt water works as an electrolyte making the problem worse. AV 40 will do the trick but it's a lot of work. You will have to strip the paint off the effected areas the remove all traces of corrosion and then treat it, prime t and repaint it.

Good luck anyway

natas · Nov 25, 2010

Could I paint the entire 90 body with zinc chromate primer paint?

Treat the corrosion first then paint it?

Would this at least slow it down?

Thanks.

Jamesyboy · Nov 25, 2010

Hi mate.

First thing - rub down the bad areas to good metal and then consider using a product made by Hammerite which is for treating rust before painting. It's comes in a little pot, is water based, pink in colour and turns black on contact with corroded metal. I tried it with Aluminium and it worked the same way.
My corrosion has not returned after painting and I was able to paint straight onto the treatment although you can use a primer after treatment for a good thick barrier to environmental damage.
You might want to consider putting chequer plate sills on the usual bad bits to cover and reinforce - eg door bottoms... but jsut make sure you treat the rot first.
Warm air and salt water or warm saline air will rot the crap out metal which might be your problem.
As an alternative I have recently purchased glass fibre sheet to replace large panel areas in a van - it never rots, will not dent and is easier to repair. I got 4m sq off my local supplier for 50 quid at 2mm thick with a smooth surface in my required gel coat colour. Anyway, enough waffling on.... hope this helps.

natas · Nov 25, 2010

Jamesyboy said:
Hi mate.

First thing - rub down the bad areas to good metal and then consider using a product made by Hammerite which is for treating rust before painting. It's comes in a little pot, is water based, pink in colour and turns black on contact with corroded metal. I tried it with Aluminium and it worked the same way.
My corrosion has not returned after painting and I was able to paint straight onto the treatment although you can use a primer after treatment for a good thick barrier to environmental damage.
You might want to consider putting chequer plate sills on the usual bad bits to cover and reinforce - eg door bottoms... but jsut make sure you treat the rot first.
Warm air and salt water or warm saline air will rot the crap out metal which might be your problem.
As an alternative I have recently purchased glass fibre sheet to replace large panel areas in a van - it never rots, will not dent and is easier to repair. I got 4m sq off my local supplier for 50 quid at 2mm thick with a smooth surface in my required gel coat colour. Anyway, enough waffling on.... hope this helps.

Thanks,

I think that is what I will do to all the bad areas and then decide next year if it needs paint.

Off Topic.

Before the 90 I owned a 1973 AMC Jeep CJ5, the body was rotting so I replaced it with a fiberglass body.
Rear tub,front fenders and hood.
As bad as the Land Rover corrodes why has no one made a fiberglass body replacement?
Or have they?

Thanks for all the replies.:brushteeth:

Body Corrossion............

natas

Well-Known Member

hughesy

Well-Known Member

natas

Well-Known Member

jak1471

New Member

natas

Well-Known Member

Jamesyboy

New Member

natas

Well-Known Member

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