"pores"????? We don' need no steenkeen PORES!!!

Listen guys. . THINK about this "pores" stuff a bit .. what exactly ARE pores???

A "pore" is that little gland in your skin that exudes liquids, like SWEAT, so that when it evaporates it will cool you off. That's what pores do. . Engines, and METAL do not have "pores". Pores in your skin also allow your skin to "breath" or to actually vent gasses and waste instead of letting it pile up inside near the surface. (anyone know what a pimple is??? A pore that could not breath properly )

Metal can be said to be "porous" meaning that it has imperfections or air bubbles in it after it is cast, and you do NOT want this to happen. This is an ongoing problem with metal castings, due to out-gassing of chemicals and actual metal vapors that leave hollow pockets or "bubbles/pores" inside the metal when it cools. There are no actual "pores" in metal. . there are imperfections though, and by golly if you seal these little pinholes in metal you are probably doing a good thing. There have been several instances of 3W crankcases developing air leaks due to "porosity" problems, because of hollows and pinholes in the castings that left weak areas that ultimately failed after heat cycling and vibration/stress. This causes leaks, and the only solution is to replace the part.

SOOO!!. . PLEASE remember. . metal does NOT have "pores" to clog in the first place!!! If it did, it would fall apart!! It does, however, have pinholes, imperfections, and alloy separation spots, none of which contribute to cooling the metal or radiating off heat, and all of which can be easily plated/painted with no problem.