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Re: Cross drilling rotors



I have the latest Coleman rotors on my 944 turbo. They're slotted. This
allows hot gas to escape form between the pad and rotor surface. don't
bother drilling. stress cracks will form radially. If the rotor wasn't
designed for it, i.e. cast in features for drilling, you're weakening the
rotor by drilling.

doug dykaar
AT&T Bell Laboratories
86 951
85 535i
94 850 turbo wagon