(2)450 DP's vs (2)750 DP's
I assume the fuel levels are about here.
You can check by marking with a pencil on th eoutisde of the block and then when you have it apart take a ruler or square to it. Those holes look to be .028 or bigger but realize thats a WAG from looking at a photo.
Here's an example of the the fuel line and FWIW these bleeds into the angle channle are drilled to .021, but .026 is more typical. I just wanted to start small.
They have a couple of functions, one is as a siphon break (when we don't fuel any more) and to let out vapor.
The other function is the one we're talking about.
First it allows an easy path for a bit of air to flow from the MAB to the booster. This can slightly delay the start of fuel flow. However once fuel begins to flow it provides another boost to fuel moving. Imagine the wind blowing a spray off the top the ocean when you're at the beach.
Just enough air moving past the venturi to cause a small reduction of pressure in the venturi.
When there is enough pressure difference any fuel above the upper e-bleed gets pushed or blown into the booster. If the fuel level is right at the e-hole level the fuel gets blown. :)
With a bleed into the angle passage this effect is increased once there is enough pressure difference to get the fuel moving.
Tuner on Kill Bleeds
Shrinker was taking the extreme examples (which unfortunately we've seen in some of the the 'new and improved' as well as occassionaly in older models) of too large an MAB or too many holes above fuel level.
I assume the fuel levels are about here.
You can check by marking with a pencil on th eoutisde of the block and then when you have it apart take a ruler or square to it. Those holes look to be .028 or bigger but realize thats a WAG from looking at a photo.
Here's an example of the the fuel line and FWIW these bleeds into the angle channle are drilled to .021, but .026 is more typical. I just wanted to start small.
They have a couple of functions, one is as a siphon break (when we don't fuel any more) and to let out vapor.
The other function is the one we're talking about.
First it allows an easy path for a bit of air to flow from the MAB to the booster. This can slightly delay the start of fuel flow. However once fuel begins to flow it provides another boost to fuel moving. Imagine the wind blowing a spray off the top the ocean when you're at the beach.
Just enough air moving past the venturi to cause a small reduction of pressure in the venturi.
When there is enough pressure difference any fuel above the upper e-bleed gets pushed or blown into the booster. If the fuel level is right at the e-hole level the fuel gets blown. :)
With a bleed into the angle passage this effect is increased once there is enough pressure difference to get the fuel moving.
Tuner on Kill Bleeds