Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
Aluminium corrosion
Just a question about aluminium underbody protection plates in general. It's an aluminium plate held onto a steel chassis by steel bolts right?
Is there something that will prevent/limit electrolytic corrosion from all the salt that'll be sprayed over the roads this winter?
Is it such a hefty lump of metal that it just doesn't matter?
Would plastic spacers help or hinder?
Some more of that fantastic Disco3.co.uk advice please for my further education!Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
3rd Dec 2006 10:44 pm
Gareth Site Moderator
Member Since: 07 Dec 2004
Location: Bramhall
Posts: 26779
It could occur. The easy way to prevent it is to use a barrier, something as simple as a strip of insulation tape along the contact surface works wonders.
Having said that, I did not put anything on my sump guard, and it still looks ok. There is a pretty thick layer of paint on the chassis which may be helping.
3rd Dec 2006 10:49 pm
stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
Thanks Gareth,
I'll look for something that'll do the job then - is there much room between the bolts and the bolt holes, i.e. enough to fabricate a nylon washer to centre the bolt in the hole and isolate them?
I can see that I'm really going to have to try hard and restrain myself from falling into my usual "silicon sealant solves everything" type of solution Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
I can see that I'm really going to have to try hard and restrain myself from falling into my usual "silicon sealant solves everything" type of solution
You mean it doesn't - "Funny, mine doesn't do that......."
4th Dec 2006 5:48 pm
stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
I may have over-used it in the past You know the kind of thing; run out of polyfilla, need something to quieten down a door slamming, stamp won't stick to envelope, cupboard won't stick to wall...
[edit]...anyone else experienced electrolytic corrosion of their plates or found an ideal solution?Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
Ali & steel does not mix well, the bolts will cause corrosion on there own being in contact with the ali.
I work in the aircraft industry and we have alsorts of nasty treatments for when the two metals are in contact with each other.
One simple barrier thats cheap is to coat both surfaces in silcone grease or just silicone sealent.
And use platsic or leather washers as well.
Ali & steel does not mix well, the bolts will cause corrosion on there own being in contact with the ali.
I work in the aircraft industry and we have alsorts of nasty treatments for when the two metals are in contact with each other.
One simple barrier thats cheap is to coat both surfaces in silcone grease or just silicone sealent.
And use platsic or leather washers as well.
Flack.
4th Dec 2006 10:42 pm
AndrewS Tarquin of the Desert
Member Since: 06 May 2005
Location: Y...... because I can
Posts: 10442
Denso Tape or Denso Grease will prevent the corrosion taking place.
4th Dec 2006 11:12 pm
10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
corrosion relies upon electrolytic action, with the D3 effectively 'insulated' by it's tyres, corrosion should be minimal. mine's been on for a year and there's no signs of corrosion - some oxidisation though.... maybe I should rub some olive oil into it?
some oxidisation though.... maybe I should rub some olive oil into it?
But ONLY the extra virgin herb infused one - "Funny, mine doesn't do that......."
5th Dec 2006 8:00 am
stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
Thanks everyone, your advice is much appreciated. It seems I have two options;
I can use Denso tape or similar insulator (which means it'll be Silicone Sealant; I just can't help myself) and leather/plastic washers for the mountings,
or,
For the Roman Wrestler look I should annoint the whole car in Olive Oil and use Ciabatta washers...
Well I don't know about any of you but the Olive Oil definitely sounds like the way to go Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
Last edited by stapldm on 5th Dec 2006 9:52 am. Edited 1 time in total
5th Dec 2006 9:49 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73132
Or the chillie stuff!
5th Dec 2006 9:51 am
stapldm
Member Since: 11 Sep 2006
Location: Swine Town
Posts: 2330
isn't that more like Hot-Rodding?Dr. Ian Malcolm:
"Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should."
Transgenic tomato anyone?
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You know the kind of thing; run out of polyfilla, need something to quieten down a door slamming, stamp won't stick to envelope, cupboard won't stick to wall...
