Reply to "How does this cam lobe look to you?"

busterMember

quote:
Due to the short duration of the SEQ IVA test, the tracking is broken up into smaller "tracks" along the surface of the lobe. These don't look all that hot when viewed up close, however they do represent that the lobe and roller are not perfectly flat; they are both machined surfaces, with one rolling on the other. Hence the irregularities in the tracks. The "shiny" lobe is what happens when you take a piece of fine emery cloth to the Ford cam Ben showed. The irregularities are worn down and the finish is SMOOTH. Material has been REMOVED. So while the "sweet, it's SHINY!" lobe LOOKS better, it has MORE WEAR than the factory finished lobe that has some light tracking from where the surface pressure differences between the two machined surfaces: that of the cam lobe, and that of the roller acting upon it, are the greatest.

7/23/113:19 PM

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