71 Duster 360 turbo build

Disassembled, cleaned and soaked the whole carburetor; no change. I believe the change in hat direction is to blame as the smaller primary jets are no longer sufficient now that they receive more air. PV up front opens if I stab it(sub 10:1 bog), but then closes as soon as boost kicks in. So I’m going to try something different. 1:1 secondary linkage with a 6.5 PV in the rear, and a boost referenced power valve up front. I drilled and tapped the front and rear PVCR’s as well as the HSAB’s. I’m going to square the jets, and go bigger on the front PVCR’s.

My hope is that the regular PV will stay open in the rear since it doesn’t want to work up front. I also hope that it doesn’t starve for fuel without some kind of extension.