Air flow through hood scoop

[Ant]

Morris,

Great work very impressive as you have gone the extra mile to make sure the FE gets everything it needs! I will be doing a similar base shortly. I am 373 cuin running similar rpms, K&N tech advised me that the filter I have flows 923.16 CFM @ 1.5" (h20.)

I could run an X stream on top, or make up a foam insert, if I go to a 2" drop, that will give me 2 - 1/4" above the carb flange (MAX) to allow for an X stream, but I am not running a block under the carb, which helps to allow for the air/fuel to turn in the manifold, so I dont know what is more important say a compromise using a 1/4" to 1/2" four hole block and an X Stream on what I have, the X stream may give some benefit with a bit less gap!

Another issue I have tried to find out is " how minimal the gap above the carb needs to be, taking into consideration I can cut my air tubes down on my Pro 950 carb to a bit over half, doing a 45 angle on them, as they are quite long and straight at present, that might give me a little. All this is with a BIG 3.5" scoop on the hood!

[Morris]

Ant

Running foam in as a filter for a carb is dangerous......as we found out ..... when it's cold or cooler and it back fires....... the foam will go up in smoke.....

So the extreme top would be the top of choice.......

We are running a 1/2" insulator under the carb.....and the 4 hole kind because the linkage of a dominator is in the middle of the holes and we would not want it to drop in to the intake manifold....

The minimum gap between the carb air horn and the top of the air filter is dependant on the shape of the base of the air cleaner housing ...... just like the boundry layer of air on the outside of the body..... it will follow the shape of the air cleaner base into the throat of the carb.....

And we have a large hood scoop facing backwards to evacuate the air pressure under the hood..... large.....

Morris

[Anthony]

Originally Posted by Morris

Running foam in as a filter for a carb is dangerous......as we found out ..... when it's cold or cooler and it back fires....... the foam will go up in smoke.....

So the extreme top would be the top of choice.......

Did you have a wire mesh screen inside of the foam?, as this is supposed to prevent the foam going up in flames.