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Sep 12, 2012 | 07:49 PM

#7 (permalink)

onehundred80

Senior Member

Joined: Apr 2006

Posts: 25,432

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From: Ontario

Re: Boost???

Quote:

Originally Posted by Billy22Bob

Welcome by "Oh Porsche One"...
figure below updated

An afterthought....it should be linear since the blower is pumping in at X and the pots are sucking it in at Y - both are "fixed displacement" volumes and both are linked to the crank....so the "inventory pressure" within the plenums is only influenced by any changes in the ratio between the two - ie: speed the charger up and you increase the inventory pressure because the SC is puming it in faster than the pots can take it way.

hmmm...need more afterthoguhts

I have no real knowledge on this only a gut feel, hopefully it's not just gas.
As the SC speed increases the efficiency will go down. So after a while there will be no increase due to blow back and the inefficiency of the SC to compress more air.

The design will limit the max pressure obtainable. Less efficiency due to increased clearances will make the SC last longer and not need to be torn down for repair every few runs.

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