Barrie:
You are dealing with different creatures. Paint has to be removed by
solvent or media blast. Rust can be converted if it's a powder coating
or removed by media blast.
Corrosion on aluminium parts is much softer than ferrous oxide and has
to be treated carefully. I'm not up on conversion products for aluminium
components, but carb. cleaner would be a good place to start.
The best process I've found for suspension components is a couple of
days soak in a heated solvent tank (here in California we have to use
aqueous solutions. This soak removes any grease and any loose paint.
Then I media blast to remove the rest of the paint and any corrosion.
For aluminium, you have to use different (much softer) media which
burnishes the part without removing metal.
For small rusty parts such as engine bits and brackets the best stuff
I've used is "Evaporust", but it won't work on painted components.
http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=47552&Sort
Order=1
This converts the rust and does not damage critical surfaces. I've used
it on lathe components and internal engine parts such as rockers and
timing gears. It also worked really well on an aluminium steering rack
center section.
I'm interested to hear what others are using, as I am still a novice
with all this new eco solvent thing. My last restorations involved a
huge heated caustic tank that would strip the rust off any panel stuck
in it. (no aluminium tho') Them were the good old days, and my old work
mates are slowly dying off from cancer and other complications.
Kelvin Dodd
> -----Original Message-----
> From: owner-mgb-v8@Autox.Team.Net
> [mailto:owner-mgb-v8@Autox.Team.Net] On Behalf Of Barrie Robinson
> Sent: Saturday, December 08, 2007 3:47 PM
> To: mgb-v8@autox.team.net; mgs@autox.team.net
> Subject: Liquid to clean parts
>
> Has anybody got any recommendations for some liquid I can put
> in a bucket that will clean rusted/painted parts? Need it
> for both steel and aluminium bits.
> Thank you for your replies - in advance.
>
> In case anyone is interested the "hits" on my British Car
> Cottage Industries web page are not fantastic but still quite
> encouraging. I am pondering about adding some of our well respected
> specialists - and by that I mean specialists - not the guys
> who always seem to be a "specialist" in whatever it is you want fixed!
>
> Regards
> Barrie
>
> Barrie Robinson
> (705) 721-9060
> http://www.britishv8.org/MG/BarrieRobinson.htm
> http://www.britcot.com
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