PCCB discs have been 'improved'
#1
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According to the Porsche website at http://www2.porsche.com/pccb/default.asp?market=PCGB
"To further enhance cooling in the toughest race conditions, we've prepared a new evolution with a modified system of internal cooling vents. Now with twice the number of channels, the new vent geometry enables a better flow of air through the disc.
Since more cooling channels mean more internal walls, the disc has greater structural stability. Together with the modified drill-hole pattern, the ring of vent openings around the rim of the disc is one of the main distinguishing features of the new evolution"
I hope that is enough to prevent any more problems
"To further enhance cooling in the toughest race conditions, we've prepared a new evolution with a modified system of internal cooling vents. Now with twice the number of channels, the new vent geometry enables a better flow of air through the disc.
Since more cooling channels mean more internal walls, the disc has greater structural stability. Together with the modified drill-hole pattern, the ring of vent openings around the rim of the disc is one of the main distinguishing features of the new evolution"
I hope that is enough to prevent any more problems