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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: DIY Port and Polish
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Mon, 25 July 2005 19:27
 
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if you just want to clean it up, maybe dremel will be ok, but very slow.. if the head is alloy it will also clog any abrasive bit you use.
if you want to take off more material, use a drill or preferably a die grinder with a proper alloy cut burr.
you can also use the 3M discs, which have very good removal properties for alloy, but are a little exxy for a consumable ($2 each for 1" dia)
don't worry abot polish for intake, rough surface flows better.. for exhaust, maybe it will slow adhesion of carbon but not much benefit. for combustion chamber, maybe polish is good..
here's some of my effort.
http://www.materials.unsw.edu.au/~sford/3khdpixnew .html
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