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Old 05-27-2008, 07:35 PM
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what is the best way to clean cast aluminum

I have an old cast aluminum eldebrock intake that is pretty greasy, anyone have a good suggestion on how to clean it ?

thanks, Steven

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Old 05-27-2008, 08:18 PM
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You ever see that acid wheel cleaner detail shops use. It will turn polished aluminum black but works magic on cast and alloys.
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Old 05-29-2008, 12:51 AM
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Theres several ways, use a can of carb cleaner to get most of the grease off then sand or bead blast it...if you have the machine. You can use "Easy Off" oven cleaner.....laquer thinner and a stiff brush or take it to an engine shop and have it cleaned. Obviously don't use anything that will eat alum.
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Old 05-29-2008, 09:50 AM
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Are you trying to clean grease and dirt or corrosion? If your cast aluminum is corroded, I've had really good luck with Naval Jelly for Aluminum. Brush it on, let sit, lightly scrub, and hose off with water.
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Old 06-01-2008, 09:36 AM
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I've always had good luck with full-strength Super Clean. Just be careful not to get it on any painted surfaces etc. (and wear rubber gloves while using it!!)
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Old 06-04-2008, 11:56 AM
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simple green will do it. I have done two intakes with it and they come out looking great. IMO for about 4 bucks a bottle and something that is relatively harmless its the way to go.
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Old 06-04-2008, 06:58 PM
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Fantastik brand spray cleaner.....

that stuff eats away old goo and grease...spray on...leave it to soak...maybe spray again if crud heavy.....

then pressure wash off.......follow with glass bead or sandblast for a pro job...
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Old 06-05-2008, 08:18 AM
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DO NOT use oven cleaner. It will clean it good, but when the intake manifold gets hot the lye will turn it dark gray. I found this out years ago on a motorcycle I owned. Also do not sand blast it, that will alter the original finish. Not so important on an aftermarket manifold but it will really devalue an OEM aluminum manifold.

Vince
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Old 06-05-2008, 10:39 AM
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simple green clean. I need to go over it again and get the places I missed.
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Old 06-13-2008, 06:59 PM
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SODa Blast is the best,seconded by ultrasonic bath cleaning. If theres an aircraft maintenance place near you they may have the ultrasonic. Bead blasting on heads and manifolds is crazy.you get grit into everything.
These are rare mercedes 6.3 heads after being soda blasted.

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Old 06-15-2008, 04:42 PM
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Thanks for all the suggestions guys ! what I ended up doing was cleaning the intake( not rare, just a edelbrock performer) with simple green and a wire brush which got the big chunks off with ease, and followed up with the sluminium rim cleaner which made it look good as new. THANKS TO ALL
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Old 06-15-2008, 05:26 PM
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Simple Green Ftw!
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Old 06-27-2008, 01:21 AM
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I use Purple Power for the final cleaning and mineral spirits for the thick grease. My intake looks new.
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Old 08-11-2009, 10:22 AM
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Simple Green

The use of Simple Green as an aluminum cleaner on aircraft has been banned by the US Military after it was determined that it led to unseen corrosion. The cleaner got into areas that could not be rinsed adequately, rivets, seams etc and resulted in a severe corrosion problem. It is thought that this led to a Chinook helicopter crash. So if you use it, be sure to rinse the parts thoroughly.
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Old 08-11-2009, 01:05 PM
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good to know. i have taken to degreasing with paint thinner. cuts grease fast and leaves it clean!
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