I have actually seen dyno test results where the filter improves airflow. Apparently the theory is that the air filter tends to straighten the airflow out and cars will make more power with the filter in place than without it.
Cool, I'll give it a shot. I have to set up for some pics for an ignition article anyway, so I will set up a carb and take some shots. It works for Holleys, I have no clue about Edelbrocks.
I have to see if I have a paper clip around here...LOL!
Here is the rod that connects the vacuum secondary diaphragm to the secondary throttle plates. Install the paper clip at the top of the rod as shown here. This paper clip is a little to big, but you get the idea.
When the secondaries open, the diaphragm goes up into the diaphragm housing, up like I am pushing them here. The primaries need to be open for this to happen, so if you are trying it on a bench like I am here, crack the primaries before pushing the rod up,
The rod going up into the diaphragm forces the paper clip down the rod. When you close the throttle and the secondaries return to the closed position, the paper clip will stay where it slid to. If your secondaries are opening, your paper clip should be at the bottom of the rod, as shown here.
did one and the clip did not move. took the secondary diaphram apart and it had the yellow spring in it. so io switched to the white spring. 2nd time around it moved and all runs was at WOT.
did one and the clip did not move. took the secondary diaphram apart and it had the yellow spring in it. so io switched to the white spring. 2nd time around it moved and all runs was at WOT.
Thanks for the pictures and description Max Power! Those helped me out a lot. I'm with geostang on not knowing a whole lot about carbs, so anything you guys post helps.