Finally getting started now that it is warmer
Looking at the Metering block tells me there is a possibility to be able to adjust PVCR size. Drill PVCR's out from the front as described but drill them back at a 45 through the main well, not out to the sides as drilled by holley. The drilled hole will be somewhat ovaled but will now be coming out the front of the metering block right above the main jets and the right side between the accelerator pump passage boss. You can now tap these to short tipped Holley 4000 teapot curb idle adjustment screw pitch (8-32?) on the front side of the block
and screw in a curb idle screw and effectively fill the PVCR with the tip of that screw. Run screw in and the PVCR is closed or made smaller, loosen the screw and the PVCR window becomes larger or bigger. Youll have to adjust these with the bowl off unfortunantly but it looks feasible. Have to check it out on a spare block I have. Hey, a new patent to sell to Quick Time Fuel! Just outside of #15 in lower diagram, screws will be coming out at a 45 in either direction....
Looking at the Metering block tells me there is a possibility to be able to adjust PVCR size. Drill PVCR's out from the front as described but drill them back at a 45 through the main well, not out to the sides as drilled by holley. The drilled hole will be somewhat ovaled but will now be coming out the front of the metering block right above the main jets and the right side between the accelerator pump passage boss. You can now tap these to short tipped Holley 4000 teapot curb idle adjustment screw pitch (8-32?) on the front side of the block
and screw in a curb idle screw and effectively fill the PVCR with the tip of that screw. Run screw in and the PVCR is closed or made smaller, loosen the screw and the PVCR window becomes larger or bigger. Youll have to adjust these with the bowl off unfortunantly but it looks feasible. Have to check it out on a spare block I have. Hey, a new patent to sell to Quick Time Fuel! Just outside of #15 in lower diagram, screws will be coming out at a 45 in either direction....