Quote:
Originally Posted by LAP1DOUG
Perhaps the ultimate solution is dry sump system. Those positive displacement scavenge pumps can pull a lot of vacuum for crankase ventilation, and a properly configured oil tank is a great air-oil separator.
Speaking of which, a guy that I autocross with who has a 2007 Carrera S told me today that the Carrera S model in particular has a dry sump system. I thought all M96 / M97 / 9A1 engines all had the same pseudo-wet sump.
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Sorry, but having run several dry sump engine setups over the years, I can assure you that you still need an auxiliary vacuum source (read a belt driven vacuum pump) to properly evacuate the engine case. The dry sump pumps, even a multiple stage units, do not create enough case vacuum to do the job.
As for your autocross guy, his 2007 Carrera S has the exact same AOS setup and wet sump that you and every other M96/97 does……………