Quote:
Originally Posted by TFord
See I understand your logic put the problem I see is this...
with a roots style blower your boosted no matter what. The amount of boost is directly porportional to the engine RPM's hince the term "blower" lets say I gun it untill I hit 70 mph and then cruse, once Im crusing afm kicks in and 4 cylinders close Im still forcing in a volume of air porportional to my RPM's thats designed to be split between 8 cylinders, but now I have 4 so I just doubled the volume of air being sent to these 4 cylinders. Isnt there is the potential to do this to your block
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My "experience" is with Magnuson (Eaton) blowers. All the new ones have a vacuum actuated bypass valve, that essencially "turns off the boost" when you're cruising. As long as your not on the throttle, then there's no boost.
It's sort of the same with turbos, and wannabe turbos(centrifugal supercharger). At low rpms, they are producing very low, if any boost.