Hood scoop opening and Rain

[undy]

Originally Posted by JBCOBRA

I have driven in the rain a bunch of times and virtually no water (maybe a few drops) goes in the hoodscoop.
Why? Because the Big opening in the front of these cars allows so much air in, the scoop becomes an Exit for the air under the hood. No air actually goes in the scoop when driving unless your hood is sealed to the engine.
Basically all scoops do is allow for more carb/engine room under the hood, unless of course if the scoop is a sealed system.

not necessarily true...

at least on my "non-sealed" hood scoop. I did a significant amount of testing on the subject. On an 80 degree day, car fully warmed up, driving down the road @ 45mph, I popped the hood and did some infrared temp scans on the top/sides of my air cleaner lid. It was dead on 80deg, the same as the outside temps. I tried it on several different days, temps and mphs. The same results were evident, ambient temps on the air cleaner cover.

For the OP, I never had any significant rain come in either.

Here's the setup I run.

[JBCOBRA]

Christmas is coming.....wanna make a wager

The first time I drove in the rain I was on my way to Watkins Glen (250 miles)
I was worried my engine was getting wet/soaked...with the dizzy being right there I didn't want to get stranded on the NorthEast Extension etc.. So I pulled over to check (in a downpour) and the engine was dry as a bone. I would have never believed it myself. That is when I realized what was happening with the air flow.
Tape some yarn on the front edge of the scoop. They will stand straight up when driving, not hiding in the scoop

Originally Posted by undy

not necessarily true...

at least on my "non-sealed" hood scoop. I did a significant amount of testing on the subject. On an 80 degree day, car fully warmed up, driving down the road @ 45mph, I popped the hood and did some infrared temp scans on the top/sides of my air cleaner lid. It was dead on 80deg, the same as the outside temps. I tried it on several different days, temps and mphs. The same results were evident, ambient temps on the air cleaner cover.

For the OP, I never had any significant rain come in either.

Here's the setup I run.

[xb-60]

Originally Posted by JBCOBRA

...Tape some yarn on the front edge of the scoop. They will stand straight up when driving, not hiding in the scoop

That's good advice. If you want to check the airflow anywhere on the bodywork, use some wool/yarn.
Cheers,
Glen