post milling deburr of heads?
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On The Tree
Joined: Oct 2006
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post milling deburr of heads? Just picked up my 823's from having .030 milled off and these things are sharp! I'd like the deburr everything to make sure any little pc's of aluminum that are just barely hanging on don't get loose and to keep from cutting off a digit! Has anyone else done this and what tools and techniques did you use?
Thanks!
S.F.
Thanks!
S.F.
Die grinder, air with pressure turned down or electric with a rheostat pedal and a cartridge roll for head polishing. Someone really patient with a steady hand could use a grinding stone or even a carbide porting bit (preferably dull) but almost inevitably the one "OH ****" becomes **** DAMN POOP.
It takes 15 minutes at most per head with a fine file, and little to no risk of screwing up. I also de burr the valve cover seats on top of the heads as well, since those also tend to be sharp.
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Use a variable speed drill and a stone, or a porting burr. I use a DeWalt and you can go as slow as you need. They offer good control, for porting/cleanup you almost cant go too fast and with a quick cut burr IMO. Its what I will use on a set of 317 I will be throwing on my dd ls1 after a good mill/valve job.
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Not rocket science. You're just going over the sharp edges after the machining process. You're not going to be reshaping anything. Use a sanding roll in a drill motor and carefully go over the edges. For something simple like this, you can put a strip of sand paper in a cotter pin, and chuck the cotter pin into the drill motor. Or, you can just use some sand paper and go over the edges by hand.
As for cleaning, use hot water and some Dawn or Tide. I don't trust that job to a machine shop.
As for cleaning, use hot water and some Dawn or Tide. I don't trust that job to a machine shop.
TECH Apprentice
Joined: Sep 2006
Posts: 328
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