The last day alone at home, best get busy then!
To keep the heat away from the turbine shaft I drilled four 2.5mm holes that will direct bleed air to the backside of the turbine wheel.
Slots being milled on the surface between NGV and shaft tunnel.
After cleaning the part up a bit it looked like this.
And the turbine side.
I turned a radius on the NGV entry in the lathe.
Here the NGV is assembled with the turbine wheel as reference.
After tapering the vanes the NGV angle got a bit smaller than originally intended, I hope it isn´t too extreme.
With that done I started on the oil scavenge line in the shaft tunnel.
Here I have threaded the end of the hole for an M12 plug, for ease of manifacturing I did it like this instead of drilling an angled hole from the main scavenge port which I haven´t made yet.
Drilling the main scavenge line.
After some porting with the Dremel it looks like this.
Cheers!
/Anders