Following on from the last post where I'd drawn up the plenum & the throttle body in CATIA V5, I then refined the design & re-drew it in SolidWorks as I find it more intuitive.
The way the system works is that the butterfly in the TB shuts off the airflow to the engine, but there is a bypass drilling that allows air past the butterfly into a chamber in the base of the TB. This chamber is connected via a pipe within the Ford inlet manifold to the ISCV which meters air into the engine to allow it to idle at the correct speed. As I'm not using the Ford inlet I needed to duplicate this system.
This is the same view as above but with the TB & the ISCV removed, you can see the 3D printed mounting block with the large hole for the main airway & beneath it the collector chamber for the bypass air. To the right are 2 holes for mounting the ISCV, an upper hole coming from the collector chamber & a lower hole straight into the plenum.
It's certainly a unique touch.