George--intake runnerlength was 24 to 25 inches total including length of
peripheral port inserts and effective length of plenum stub tubes including
the bell inlet...i.d of tube 1 11/16"  for rated power at 6,000 rpm.

Steve Beckham

Steve,
I see what you mean.
On another point did you build up the inlet area and does that inlet shape
carry through to the inside, I assume it does.I've done similar designs
myself but consider it to be more work than necessary compared to round.
I also asked about the inlet tube length. Mine will be 43mm ( 1.7")diameter
and I was wondering what length you finally settled on for 6,000 rpm.
George (down under)

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