Quote:
Originally Posted by NotEric6
We did this as well. We found a few neat things from doing it that way as well as flowing into both runners simultaneously. But both tests are inaccurate as is any static test. Flow within the engine is never static, but very dynamic in nature.
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Just checking. 'Blow into the thing' seems to be a common airflow error.
Sucking air though is not that inaccurate. It just needs to be done and analyzed properly.
If the manifold can flow more air, maintain or increase velocity, and ensure each runner draws equally, all through static tests, we know it will be better for pure flow dynamically, too. But blowing air through can give you completely wrong data, even statically.
Where the real problems of non-dynamic testing comes from is resonance and wave action stuff which create very timing critical pressure changes which can affect flow. Runner length and plenum volume is about controlling and optimization of wave action.