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Brucelee
"There are plenty of 996 onwers who are running centrifugal superchargers, and have had no problems thus far. Does the 996 use different engine internals then the 986? If you can run a centrifugal blower that spins almost twice as fast as a PD blower and not have problems, why can't these motors handle less boost, less CFM?"
Good question. To my understanding, the engines in the Boxer ARE different internally from the larger Turbo motors in the 911. More interestingly, a tech at my local dealer told me that they have always had MORE service problems with the non turbo 911s than with the Turbo 996.
That might suggest that the Turbo model has a more robust set of internals, ie materials, construction, etc. than the regular 911 motor.
I will do some digging and see what I can find. In the interim, I will just say that I would personally not add any breathing supp, like SC or Turbo to a base Boxster. But then, I am a tad conservative and cheap, dont want to pay for a new engine, etc.
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Rich Belloff
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