Valve Covers
04-11-2007, 02:58 AM
#31
5th Gear Member
Join Date: May 2005
Location: S.burbs Chicago
Posts: 4,793
RE: Valve Covers
ORIGINAL: Drop Top 06
I think we should start a chain of pass the unpainted valve covers... I bought powder coated valve covers, and will be looking to get rid of mine for a small fee... since i know it takes hours to let them cure after painting...
I think we should start a chain of pass the unpainted valve covers... I bought powder coated valve covers, and will be looking to get rid of mine for a small fee... since i know it takes hours to let them cure after painting...
Mine are done, but not perfect. It was free so I was happy with it. For a small fee I wouldnt mind ti get them perfect.
04-11-2007, 01:00 PM
#33
3rd Gear Member
Join Date: Aug 2006
Location:
Posts: 793
RE: Valve Covers
ORIGINAL: Norse1974
Has anyone tried to polish our cam covers?They are aluminum.I would think they would polish nicely?
Has anyone tried to polish our cam covers?They are aluminum.I would think they would polish nicely?
Magnesium polishing can cause fire hazards, but the problem can be virtually eliminated by following the recommendations set forth by the producers of magnesium and by National Fire Protection Agency.
Standard polishing wheels and abrasive belts are used to remove rough surfaces, parting lines, and other surface imperfections from magnesium alloy parts. Aluminum oxide or silicon carbide abrasives are used, in grit sizes from 60 to 320, depending on the surface roughness and the final finish desired.
Particles of free iron or other heavy metals must not be used in abrasives for the polishing of magnesium alloys, because these metals, when embedded in the surface, can initiate localized corrosion or cause pitting in pickling processes used before chemical treatments or electroplating.
Buffing
Large castings require polishing of significant surfaces before buffing. Fine polishing belts are used on parts with little contour. Parts with more intricate contour are polished on setup wheels or on cloth wheels, using a greaseless compound. Grit sizes from 220 to 320 are most commonly used in polishing operations prior to buffing.
Magnesium alloys can be buffed to a smooth, bright finish using aluminum oxide or tripoli compounds on a light-count sewed wheel. For color buffing, a dry lime compound can be used. Buffing compounds containing free iron or other heavy-metal abrasives should not be used.
04-11-2007, 03:27 PM
#34
3rd Gear Member
Join Date: Feb 2007
Location:
Posts: 630
RE: Valve Covers
ORIGINAL: bascho
Polishing
Magnesium polishing can cause fire hazards, but the problem can be virtually eliminated by following the recommendations set forth by the producers of magnesium and by National Fire Protection Agency.
Standard polishing wheels and abrasive belts are used to remove rough surfaces, parting lines, and other surface imperfections from magnesium alloy parts. Aluminum oxide or silicon carbide abrasives are used, in grit sizes from 60 to 320, depending on the surface roughness and the final finish desired.
Particles of free iron or other heavy metals must not be used in abrasives for the polishing of magnesium alloys, because these metals, when embedded in the surface, can initiate localized corrosion or cause pitting in pickling processes used before chemical treatments or electroplating.
Buffing
Large castings require polishing of significant surfaces before buffing. Fine polishing belts are used on parts with little contour. Parts with more intricate contour are polished on setup wheels or on cloth wheels, using a greaseless compound. Grit sizes from 220 to 320 are most commonly used in polishing operations prior to buffing.
Magnesium alloys can be buffed to a smooth, bright finish using aluminum oxide or tripoli compounds on a light-count sewed wheel. For color buffing, a dry lime compound can be used. Buffing compounds containing free iron or other heavy-metal abrasives should not be used.
ORIGINAL: Norse1974
Has anyone tried to polish our cam covers?They are aluminum.I would think they would polish nicely?
Has anyone tried to polish our cam covers?They are aluminum.I would think they would polish nicely?
Magnesium polishing can cause fire hazards, but the problem can be virtually eliminated by following the recommendations set forth by the producers of magnesium and by National Fire Protection Agency.
Standard polishing wheels and abrasive belts are used to remove rough surfaces, parting lines, and other surface imperfections from magnesium alloy parts. Aluminum oxide or silicon carbide abrasives are used, in grit sizes from 60 to 320, depending on the surface roughness and the final finish desired.
Particles of free iron or other heavy metals must not be used in abrasives for the polishing of magnesium alloys, because these metals, when embedded in the surface, can initiate localized corrosion or cause pitting in pickling processes used before chemical treatments or electroplating.
Buffing
Large castings require polishing of significant surfaces before buffing. Fine polishing belts are used on parts with little contour. Parts with more intricate contour are polished on setup wheels or on cloth wheels, using a greaseless compound. Grit sizes from 220 to 320 are most commonly used in polishing operations prior to buffing.
Magnesium alloys can be buffed to a smooth, bright finish using aluminum oxide or tripoli compounds on a light-count sewed wheel. For color buffing, a dry lime compound can be used. Buffing compounds containing free iron or other heavy-metal abrasives should not be used.
04-13-2007, 01:42 AM
#35
2nd Gear Member
Join Date: Feb 2007
Location: Washington
Posts: 342
RE: Valve Covers
I got bored while I had the car down doing other stuff and decided to take the valve covers off and I has them powder coated gloss black. I really like the way turned out.
http://i34.photobucket.com/albums/d1...g?t=1176435675
http://i34.photobucket.com/albums/d1...g?t=1176435775
http://i34.photobucket.com/albums/d1...g?t=1176435675
http://i34.photobucket.com/albums/d1...g?t=1176435775
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