look up the roadrunner scoop. its squared and pops up and down with a cable. theyre BA.

 

Sorry to have to correct you but Pontiac started the Shaker hood scoop on an overhead Cam 67 Firebird called a Sprint. Very rare. Had one (wish I still did) and I've also owned some Cudas with the shaker.
Every little bit helps.

 

i didnt think sprints had true shaker scoops... thats cool. still think cudas coined the shaker term. with the cool decal on the inside of the hood lol


gotta put this decal on the inside of your hood if you get done with the shaker hood for your jeep. mopar makes em still.

 

It did and it was truly rare. all documentation I can find on them has them around 50 produced and none known to left. Which is why I wish I'd never sold it. New owner eventually pulled engine and put in a SBC. He couldn't afford a real camaro.

 

ive seen one or two of these... or do you mean with the shaker only.

 

I never saw one until I watche barret jackson collector car auction I was like that's awsome

 

with the shaker only. plus it was an overhead cam straight six.
Used the chevy 250 six with the pontiac head and a rochester 4 barrel.

 

The 67 pontiac sprint? wow I didn't think there were any left. At least from what i'd heard.

 

i saw one or 2 when i went to barrett jackson...

 

If a scoop facing forward is open to the engine compartment is will create positive pressure within the engine compartment. Turning a scoop around or installing vents will allow the air entering through the grill to exit easier.

I ran these tests with a digital thermometer and saw a 20-30ºF drop when the scoop was facing backwards.

I ended installing louvers on the passengers side to allow the heated engine compartment air to escape.

On the drivers side, I built a box that seals to the underside of the hood. It is supported from the underside to the inner fender. It is piped with Spectre components and a 10" cone filter within the box. I creased the bottom of the box to slope to a 3/8" hole.

Above the filter, I have a removable baffle. Any water that enters through the scoop is directed around the filter & towards the sides of the box, where it can then drain out.

The valve cover breather tube is connected a fitting in the 3" Spectre pipe, between the box & the TB intake. I'm now getting 20-30ºF cooler underhood temperatures and my engine is getting cool air from the outside (without a butt ugly submarine periscope).

I installed a $20 EBay hood scoop directly above the air box. All totaled the Spectre parts ran about $100 & the sheet metal for the box another $30.

I have placed a second battery where my OEM air box was.

 

Got some pics of the setup? Sounds pretty involved to complete but ultimately cool....pardon the pun

 

^ that's called an air grabber.

but with the xj, you would likely want to make a temporary strip of bristle or something like a shop broom end. more so of a flexible strip placed across the hood to see where the airstream is at the most force. otherwise, you may be adding a hood scoop where there is absolutely no air stream.

if you want the best of forced air intake, i'd have to agree with a snorkel. the air is high above the hood, at roof level, where there is likely the most volume of air being forced over the vehicle.

 

I agree that the optimum placement of the scoop should be determined by the aerodynamics of the airflow over the surface of the hood.

However, the under hood support ribs and space within the engine compartment ultimately dictate where stuff resides. To get really scientific, you'd just raise the height of the scoop until it intersected the airflow (that's why they sell race car scoops in various heights and opening configurations).

I don't drive 200+ mph, so the slow speeds of the airflow most definitely make it into the low profile scoop. It's all about grabbing fresh, cool air for the intake and venting the under hood heat.

 

https://www.cherokeeforum.com/f46/pr...100789/index2/

 

WOW! You can make margaritas & daiquiris as well. I'm jealous! But I don't think that is too waterproof.

I'd also be concerned about the uncontrolled water spray getting into the ignition system, spark plug wires, alternator, fuse block, etc. Those components are not designed to be saturated with water.