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Old 07-26-2009, 10:42 AM
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I bought some burrs from Enco Tools.... they have worked well on my 6 cylinder head porting

1/4 inch diameter shaft for my air grinder , various shapes. single or double cut design worked for me to rough out the shape.

I had some stones on hand to smooth out the cuts.

With porting , remember : " less is more" when you do not have a flow bench or the related knowledge on porting
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