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Old 03-09-2004, 02:55 AM   #1
Kostamojen
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Question Cleaning aluminum completely

Simple green, bug and tar remover, carb cleaner, brake cleaner, none of this stuff works...

Im basically trying to completely clean this old EJ20G I have, and I need a recomendation for a heavy duty Alum cleaner, something that can get rid of all the ancient stains and deposits that get in all the little nooks and crannys. Neverdul and such that I plan on using on the surfaces I plan on shining up nice (like the head plates) but the rest I need something chemical...

Suggestions?
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Old 03-09-2004, 04:38 AM   #2
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Try acetone and various scrub brushes/pads....
Beware acetone...it WILL explode
Use it in a well ventelated area no smoking.

If that sin't enough, you may have to have it hot-tanked.
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Old 03-09-2004, 07:47 AM   #3
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600 grit wet/dry sandpaper?
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Old 03-09-2004, 08:59 AM   #4
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Engine degreaser, follow the directions.
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Old 03-09-2004, 09:50 AM   #5
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Corn Cobb blasting (alternately walnut shell and or peanut shell, or dry ice)....

(or sand but be careful)

nick
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Old 03-09-2004, 12:08 PM   #6
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"Aluminum Jelly", (kinda like "Naval Jelly" )... Nasty powerful acid that will make anything almost like new. Use with caution, read directions...
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Old 03-09-2004, 12:22 PM   #7
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Try a search on
dx-533 phosphoric acid aluminum cleaner PPG
someone into aluminum block V8s swears by this but I have never used it.
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Old 03-09-2004, 11:52 PM   #8
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Excellent, know where should I look for the dx-533 or aluminum jelly (I use naval jelly quite a bit, works damn well, but thats the kind of stuff im talking about, something really acidic)
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Old 03-10-2004, 01:13 AM   #9
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Will there be a problem with the now clean/stripped alluminum surfaces corroding. Is there some sort of "clear coat" type sealer that you could use to avoid this.
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Old 03-10-2004, 01:47 AM   #10
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Old 03-10-2004, 01:52 AM   #11
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Quote:
Originally posted by suba2u
Quit post whoring. You've posted nothing but smilies in several technical threads within the past couple minutes. This is no way to earn your "specialist" status. If you don't have any quality info to add to the thread, then don't post. Thank you.
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Old 03-10-2004, 10:40 AM   #12
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I took care of it Nic- he can start from zero posts again .


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Old 03-10-2004, 01:17 PM   #13
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You could also use a caustic soda solution to etch the surface aluminum away. I use it a lot of times when anodizing aluminum to ensure a fresh surface. However you'd have to be pretty careful about how you apply it since you don't want to get any inside the engine or anything like that.

Something else that may work is oven cleaner. It's super cheap and it'll even strip out hard anodizing! I would try some on a small spot to see how it comes out.

With both of these methods, results vary depending on the alloy you are etching. Sometimes the aluminum will turn dark but still be relatively clean. Also make sure that you flush out every thing really really well when you are done. Oh yeah and work in a well ventilated area.

But then you may not want to use either because they eat away at some of the Al...but they work, especially the oven cleaner :P
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Old 03-10-2004, 02:02 PM   #14
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Most factory aluminum engines have a clear coat on them when new.

Using a harsh engine cleaner on them can remove this leaving you with aluminum oxide (that white powdery stuff) all over the place.

So, a good cleaner can get it clean but it needs to be resealed when done.
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Old 03-16-2004, 03:12 PM   #15
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Take it to a machine shop and have them put it in the hot tank. It rotates and sprays... They will use whatever they need, and you don't have to worry about the EPA or cancer.

20 or 30 bucks?

Plus it will be much cleaner than you'll EVER get it with with a brush and solvent.

Anders, who's done it both ways
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Old 03-17-2004, 11:07 AM   #16
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I have this great stuff for cleaning aluminum pots and pans... it's called Cameo and I get it in just about every supermarket, but again, you'll end up w/ the white aluminum oxide all over everything again in a few months...
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Old 03-17-2004, 12:48 PM   #17
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Quote:
Originally posted by anders8
Take it to a machine shop and have them put it in the hot tank. It rotates and sprays... They will use whatever they need, and you don't have to worry about the EPA or cancer.

20 or 30 bucks?

Plus it will be much cleaner than you'll EVER get it with with a brush and solvent.

Anders, who's done it both ways
I agree. I took a nasty (I mean NASTY) triumph TR4 block to the machine shop to have it cleaned out. They baked it in an oven, threw it in a shot peen kinda thing, then hot tanked it. Absolutley amazing. Never seen anything like it. Came out like new.

After that I took an aluminum ecotec in and had equally impressive results. Its not too expensive and saves you a lot of time and trouble.
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