Take a look at this ram air setup for the f-150

[sixiron]

does this tweak anyone's interest in some type of retro for van use

https://www.ramairhood.com/store/scr...p?idproduct=48

a reverse scoop opening to the windshield might be workable..

fwiw
bd

[MADVAN]

Never liked any kind of ram air.
Just cuts the efficency of the air filter system, and adds drag.
Shortens engine life.

I like the way a nascar is setup. Tune of motor is not speed related.
Pulls air from the negative pressure area from windsheild. Intake pressures are about the same sitting still or going 200mph.

That setup in link has some possibility's
Another issue that has to be addressed with the PSD is rain water.

Bill

[bork]

Is diesel different? If ramair does produce more hp, I wonder why nascar does not use? Rules? I have mixed feelings.

[Super_Dave]

The first production bikes with ram air came in 1989. All of the faster, hyper bikes have it now. In 1994, I got my first ram air bike, and at Daytona, I was really surprised how the ram air helped at around 80MPH and up.

You can't measure that on a dyno though because you can't jam that much air into an air box sitting still.

On a bike, there's usually a longer tube leading to the air box, and that tube will have an area where water can drop down and drain out.

[sixiron]

the FAQ in the mfg link addressed the issue of water ingested into the system...it is suppose to have weep holes...no real view to see how its set up ...I would have to put an eyeball on it first...

I was thinking along the lines of a hood scoop opening toward the windshild (ala Nascar) with a big-azz piece of foam sealing between the filter and the hood...the hood would have to be modified but since its fiberglass there might be a way to alter it to get a big piece of square foam that would seal between the filter and the hood...
similar to medium duty trucks that have an air cleaner set-up with the intake piping going to the sides of the tilt hood...tilt hood has foam that seals to the top of the air filter...

[Super_Dave]

Really, you can run any kind of a filter. Just build a box around a common filter and pressurize that box. You can seal that box against the hood and the scoop regardless of the direction it comes from.

I would think a forward facing scoop would do more in pressurizing the air box and boosting performance.

A cowl induction set up like in NASCAR is certainly that way as a way of restricting power. It would be cooler air available to the engine compared to getting hot air from near the radiator. Certainly at idle and all, pulling air from someplace other than near the radiator would be a good thing in the E's.

[MADVAN]

Bill

Not saying it cannot be done. The motor is allway's moving. The seal to hood would have to be thick and flexable. Just would be better if hood with scoop closed around the new air box.

Dave

Motorcycle can be quite different. I was a RR (aamrr,wera,ama) back in the 80's. With short stacked carbs you would have to close your leg's against the bike due to all the air turbulance and 1 carb steeling air from the other. This would happen at super speedway's.
The reason forced induction on motorcycle works is due to the airbox is restricted, And gets intake pulses from 4 locations (4cyl) upsetting the intake. The forced air comes in way down stream and balances the pulses.
Best way to understand is ever swim with a snorkel. You can breath. Now extend the snorkel to double its length. You cannot breath. Motorcycle airbox is setup the same way. Its like the doubled snorkel and needs the air forced down into the airbox.

Nascar has proven that forced air hp gains vs drag is a loss in speed.
They make more speed with drag removed.

BTW Dave i still have a Leoni 851. Year 92. It was put together after reno called it quits after the Jimmy incident.

Bill