aluminum heads need help to decide
07-18-2009, 06:44 AM
#11
5th Gear Member
Join Date: Jun 2004
Location: Charles Town WV
Posts: 2,288
it is a putty like material that has abrasives in it and they force it through the ports with a machine when pushed through it removes material and smooths the walls. they use to talk how it moves like air would and all that but I don't buy into that. but it does a very nice job.
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