cleaning magnesium, MFI ITB |
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cleaning magnesium, MFI ITB |
sean_v8_914 |
Dec 17 2010, 10:56 AM
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#1
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Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
the MFI throttle body housings appear to be magnesium.
what is good to clean mag? what is BAD to clean mag? |
realred914 |
Dec 17 2010, 11:06 AM
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#2
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Senior Member Group: Retired Members Posts: 1,086 Joined: 1-April 10 From: california Member No.: 11,541 Region Association: None |
carb cleaner will work, a bit of adbrasive can help, steel wool?
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SLITS |
Dec 17 2010, 11:10 AM
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#3
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
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sean_v8_914 |
Dec 17 2010, 11:15 AM
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#4
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Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
Chemical Removal of Corrosion
1Mix a chromic acid solution. The solution should contain 24 oz. of chromium trioxide mixed with 1 gallon of water in a stainless steel, lead-lined steel or 1100 aluminum container. 2Apply the chromic acid solution with a nonmetallic bristle brush. Allow the solution to set on the area for 15 minutes. 3Rinse the solution off the treated area. Use clean water and rinse thoroughly. |
sean_v8_914 |
Dec 17 2010, 11:15 AM
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#5
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Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
thanks ron. I googled it but came up with the ussual internet bs
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SLITS |
Dec 17 2010, 01:47 PM
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#6
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
thanks ron. I googled it but came up with the ussual internet bs Personally, I would use a bead blaster with glass beads because I have one. After that I would paint them Periwinkle. (IMG:style_emoticons/default/bye1.gif) Eric |
Richard Casto |
Dec 17 2010, 02:39 PM
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#7
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Blue Sky Motorsports, LLC Group: Members Posts: 1,465 Joined: 2-August 05 From: Durham, NC Member No.: 4,523 Region Association: South East States |
Chromic Acid is bad stuff and because of that it is getting very hard to find for average people. I love how the eHow article has a "Tips and Warnings" section and says nothing about the dangers of Chromic Acid. Unfortunately most info you find regarding cleaning/protecting magnesium focuses on Chromium related stuff.
As mentioned above, personally I would use Soap/Water and then Mineral Spirits to get any dirt/grease off. Then bead blast with glass beads and then paint. I have been trying to do some research into the best way to prep Magnesium for paint and again the #1 method involves various Chromium related methods (which I don't want to do due to health and disposal issues). If you have to go the Chromic Acid route, I think you might be able to find Chromic Acid based "touch up" at http://www.aircraftspruce.com/ But that really is for paint prep and would be overly costly for cleaning IMHO. |
Cap'n Krusty |
Dec 17 2010, 02:48 PM
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#8
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
I use "Gibbs Brand" to clean, restore, and protect magnesium alloy parts.
The Cap'n |
burton73 |
Dec 17 2010, 03:12 PM
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#9
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burton73 Group: Members Posts: 3,524 Joined: 2-January 07 From: Los Angeles Member No.: 7,414 Region Association: Southern California |
I use "Gibbs Brand" to clean, restore, and protect magnesium alloy parts. The Cap'n I used fresh safety solvent to remove the dirt and grease from my trans. With the brush that was on the end of the power pump. It cleaned all of the crap off with some time and work from my guys. I do have a few cans of Gibbs Brand at my place if you want one to try that. Some people swear by it. Bob B |
sww914 |
Dec 17 2010, 08:43 PM
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#10
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Advanced Member Group: Members Posts: 2,439 Joined: 4-June 06 Member No.: 6,146 Region Association: None |
I've had excellent results with solvent, then Purple Power or whatever that Castrol purple stuff is called, then steam cleaning. Fortunately we have a steam cleaner installed at my shop, the heat really gets the junk off.
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sww914 |
Dec 17 2010, 08:44 PM
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#11
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Advanced Member Group: Members Posts: 2,439 Joined: 4-June 06 Member No.: 6,146 Region Association: None |
Oh yeah, the dishwasher is a great last step too. Do it when your wife is gone or she'll blow a fucking gasket.
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moparrob |
Dec 17 2010, 09:34 PM
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#12
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Senior Member Group: Members Posts: 646 Joined: 27-April 10 From: Los Angeles Member No.: 11,663 Region Association: None |
If you feel like driving to LA you can try out my new baking soda blaster I assembled last week....
(IMG:http://www.914world.com/bbs2/uploads_offsite/i954.photobucket.com-11663-1292643262.1.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i954.photobucket.com-11663-1292643262.2.jpg) |
Black22 |
Dec 17 2010, 10:56 PM
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#13
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Senior Member Group: Members Posts: 886 Joined: 1-November 07 From: Creswell, OR Member No.: 8,290 Region Association: Pacific Northwest |
Where did you get that and how much was it? (IMG:style_emoticons/default/piratenanner.gif) (IMG:style_emoticons/default/cheer.gif) (IMG:style_emoticons/default/aktion035.gif)
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moparrob |
Dec 17 2010, 11:36 PM
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#14
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Senior Member Group: Members Posts: 646 Joined: 27-April 10 From: Los Angeles Member No.: 11,663 Region Association: None |
Where did you get that and how much was it? (IMG:style_emoticons/default/piratenanner.gif) (IMG:style_emoticons/default/cheer.gif) (IMG:style_emoticons/default/aktion035.gif) See the thread: link to blaster story The cart was on sale for $30 and the desktop blaster was $119. I added a utility bulb and fixture inside and mounted a bathroom exhaust fan on the back (cuz I had one sitting around). |
karlo |
Dec 18 2010, 12:22 AM
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#15
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Karl Anders Øygard Group: Members Posts: 56 Joined: 2-November 09 From: San Diego, CA Member No.: 10,999 Region Association: Southern California |
Chemical Removal of Corrosion 1Mix a chromic acid solution. The solution should contain 24 oz. of chromium trioxide mixed with 1 gallon of water in a stainless steel, lead-lined steel or 1100 aluminum container. Chromium Trioxide is hexavalent chromium and is bad news. It's recognized as a carcinogen and mutagen via inhalation, eg. from welding stainless steel. If you handle it with extreme care, it shouldn't pose a health risk. I've used it for chromating zinc plated parts, but I'm pretty scared of the stuff. If you don't have to handle the stuff, I'd steer clear. |
sean_v8_914 |
Dec 18 2010, 10:13 AM
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#16
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Chingon 601 Group: Members Posts: 4,011 Joined: 1-February 05 From: San Diego Member No.: 3,541 |
liquid Satan! I will be cautious.
I dont think I will need to go that radical since my MFI ITBs are not very corroded |
jd74914 |
Dec 18 2010, 06:47 PM
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#17
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Its alive Group: Members Posts: 4,780 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
Chemical Removal of Corrosion 1Mix a chromic acid solution. The solution should contain 24 oz. of chromium trioxide mixed with 1 gallon of water in a stainless steel, lead-lined steel or 1100 aluminum container. Chromium Trioxide is hexavalent chromium and is bad news. It's recognized as a carcinogen and mutagen via inhalation, eg. from welding stainless steel. If you handle it with extreme care, it shouldn't pose a health risk. I've used it for chromating zinc plated parts, but I'm pretty scared of the stuff. If you don't have to handle the stuff, I'd steer clear. Just for anyone reading...I wanted to reiterate that hexavalent chromium is nasty stuff. If you do use it please be sure to carefully store it and dispose at a hazardous waste facility. To dispose of it you would need to heavily reduce it (with some sulfates, etc) and then neutralize with an acid, both steps of which are way beyond the capabilities of a nonprofessional disposal center. The reason it is so terrible is that it is highly soluble in water and can easily pollute ground sources if disposed of improperly. |
ONTHEGRIND |
Dec 18 2010, 07:21 PM
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#18
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Member Group: Members Posts: 286 Joined: 10-November 08 From: California Member No.: 9,738 Region Association: None |
Just Blast it and paint it a mag color our coating supploer make some mage colors..
(IMG:http://www.914world.com/bbs2/uploads_offsite/img.photobucket.com-9738-1292721676.1.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/img.photobucket.com-9738-1292721676.2.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/img.photobucket.com-9738-1292721676.3.jpg) |
Richard Casto |
Dec 18 2010, 08:25 PM
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#19
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Blue Sky Motorsports, LLC Group: Members Posts: 1,465 Joined: 2-August 05 From: Durham, NC Member No.: 4,523 Region Association: South East States |
Chemical Removal of Corrosion 1Mix a chromic acid solution. The solution should contain 24 oz. of chromium trioxide mixed with 1 gallon of water in a stainless steel, lead-lined steel or 1100 aluminum container. Chromium Trioxide is hexavalent chromium and is bad news. It's recognized as a carcinogen and mutagen via inhalation, eg. from welding stainless steel. If you handle it with extreme care, it shouldn't pose a health risk. I've used it for chromating zinc plated parts, but I'm pretty scared of the stuff. If you don't have to handle the stuff, I'd steer clear. Just for anyone reading...I wanted to reiterate that hexavalent chromium is nasty stuff. If you do use it please be sure to carefully store it and dispose at a hazardous waste facility. To dispose of it you would need to heavily reduce it (with some sulfates, etc) and then neutralize with an acid, both steps of which are way beyond the capabilities of a nonprofessional disposal center. The reason it is so terrible is that it is highly soluble in water and can easily pollute ground sources if disposed of improperly. Just rent and watch the movie Erin Brockovitch. It's all about hexavalent chromium. Great for Magnesium, but bad for everyone else. It's probably very hard to get and something people should just have around. |
Richard Casto |
Dec 18 2010, 08:26 PM
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#20
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Blue Sky Motorsports, LLC Group: Members Posts: 1,465 Joined: 2-August 05 From: Durham, NC Member No.: 4,523 Region Association: South East States |
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