Airflow Dynamics and Booster Design

air around it. Using CFD you can study the air flow and the high pressure areas in the venturi. This area has got a lot of lot of disturbance. So what happens is when the air crosses over you create a lot of tumbling air which really screws up air signal and air flow. This area over here is more of a high pressure area. The lamina air flow really wants to stick to the side of the wall and follow in it because the way the air comes in it's actually being pulled in. It's not being forced in. Then you start forcing air in over the high speed the idle air jet here. to the high speed, you can create different pressure inside the metering block. And with the vent tubes, that's another thing. The the height here will change what they call the bowl pressure. If you've got a tide level half width of sight glass and you've got 140 mph air speed going across here, it's going to pressurize the bowl. So, all of a sudden, you have more weight pushing down the jets, which will actually richen the engine up. restrictor plate racing. We'd run these all the way up to the top, run them flat, and have about 38 of clearance between the the top of the lid and the carburetor vent tube. So, it would desensitize a booster in the carburetor in out of the draft. You didn't all of a sudden be behind another car and it's loading up rich or part throttle and it's not running good. And then you get out in the draft and all of a sudden she wakes up. The olden days, you would throw things against the wall and see what sticks. Well, that was think that we're talking about earlier, the plate days. There was so much development on these carburetors because of that. When you had that retriever plate on there, the engine was so sensitive to every small change you could make, right? So, I remember this stuff being huge. Like I said, getting it exactly where it's supposed to be. What was the difference between an annular discharge uh booster and the regular one? The drop leg. Yeah. Um the angler was really good at drafting. The thing is when you use an annular discharge booster, my boss told me it's just all about the venic attractant. Of course, I looked like what do you venic attracted and English? Yeah, exactly. Mark says that's the air column when it goes through the venturi that it is its tightest point like an hourglass. Mhm. So when you could take that hourglass and you could shift it, move it, lengthen it and whenever you got one cfm more air Mhm. That would be about one horsepower.