results - probably no suprise to anyone logging - but of interest to me....
thanks to those supplying the data
It does (above 3000rpm) to some extent support the notion that the boost is only marginally increasing with rpm once it gets moving.
I suspect some of the increase is backpressure from the inlet manifold/valves etc....but only guessing.
Originally Posted by
Billy22Bob
Why?...I'm cross checking a previous (now confirmed invalid) assumption - that MAP is roughly constant through the rpm range (I have no logging) since I was previously assuming the SC was pumping a displacement into a volume consumer which were both linked via the crank.
ie:
engine needs X at 3000rpm screws pump Y resulting in an OE design within the manifold cavity of 14.5psi
engine needs 2X at 6000rpm screws pump 2Y resulting in an OE design within the manifold cavity of 14.5psi.....
the increase each "gear cycle" is due to a 10degC (18F) temp increase each gear cycle
the cooling system not keeping up with the Jones's......so to speak