Got the new rotors today - first time I've ever
seen a new rotor - the are bright metallic {:>).
The depth of the apex seal slot on the new rotors
ranged from 9.65mm to 9.77 mm. Interestingly the width of the bottom of
the apex slot was 1.88mm but the top was narrower at 1.778mm. I noticed
that the lip of the apex seal slot had a tiny burr of metal along it as if
they were not using a sharp enough tool or else pushing it along too
fast. Or perhaps no one took the time to deburr the slot.
Just in case any of you ever wonder whether you are looking at a 9.7:1
rotor or some other rotor, there is a fairly easy way to tell. Lay a
straight edge across the depression in the rotor and measure from its bottom
to the center of the depression, it should measure right at 4 mm. The
9.1 measure around 7mm for comparison. Just thought you might want to
know.
Ed