Air flow through hood scoop

[Anthony]

Originally Posted by maxrpm

I also didn't think that the little opening on the scoop would really pull much air but back to back runs at the dragstrip proved me wrong. I was thinking that I would actually hinder performance by restricting the engine to scoop only air.

What someone could calculate is the scoop frontal opening area, and compare it to the total venturi area of the carburetor to get a ratio for comparison of air flow velocity, considfering you have a sealed system.


I don't think air via scoop is highly pressurized ( ram effect), but I think the main benefit for sealing the scoop to the carb is colder air, denser air, for more power.

[David Kirkham]

Badger,

Glad to see you are up and "hobbling" around! Better than the alternative of pushing daisies.

This thread reminds me of a joke my guys played on me. A couple of years ago, my guys got together on one of the SEMA cars and put the hood scoop on backwards. You work long, long, hard nights to get a SEMA car done and you loose track of time and your mind starts playing tricks on you. The stress is unbelievable. We had a zillion hours in the car and it had to be PERFECT!

Anyway, they were wondering how long it was going to take me to realize what was going on with the hood scoop backwards. Finally, when I saw it, I thought the guys just set the hood scoop on backwards just to lay it down somewhere--until I looked really closely at the hood scoop. I almost died--the hood scoop was riveted in! It would have taken hours to fix all the 21 holes in the hood and the scoop and we were already pushing the dead line.

Anyway after I had a heart attack, everyone started laughing. They had taken the shanks out of the rivets and placed them back in the holes so the hood scoop only appeared to be riveted on. They had even lined up two holes somehow and actually riveted the hood scoop on backwards in those two holes to make the effect complete. I think I aged 2 years that night.

As you can see, Kirkham Motorsports is actually a pretty cool place to work. They got me good--fair and square...of course, I did get them back!

David

ps. Peter, nice to see you on the boards! Get well soon! Anyway, you have to come by and try our new Rush. The car is phenomenal to drive. It is like driving a full sized go cart. We had it up at Miller's track last week. Everyone who drove it just giggled. It will run circles around a Cobra.