The kd4crs/Power Hungry/Gotts Mod (revisited - and with pictures)

[ticopowell]

Yeah that "might" be worth looking in to, but i think im happy with the cold air from the front of the truck and yeah im too lazy and dont care enough to figure out the differences... my butt-dyno says that they are there so i wont complain and i gotta get my gryphon sent in to be updated to my new truck before i do anything!

[Jackpine]

OK, let's look at the "bold faced" statement:. "if it does up the pressure by much the stock hole that it is still hooked up to will dissipate it.."

Remember, you DO always have constant airflow UP the intake into the engine upstream of the "Y". So, that air HAS to come from somewhere. The amount of air moving is a function of demand by the engine and the supply capacity. If the demand exceeds the supply, the pressure in the tube is reduced. But, having two inlets to the "Y" should effectively add to the supply capability, regardless of "pressure". So, my take on it would be that there would be little to no "restriction" effect. However, any positive pressure provided by the tube going to the "ram" intake is going to be split, and any airflow gain may actually be canceled by turbulent interactions.

I honestly don't know what the effect will be. As I've said before, aerodynamics is a VERY complicated "science", and it's not really that well understood. Most of the "theory" is empirically derived. You would need a lab setup to test the possible gains of this configuration.

- Jack

[ticopowell]

Yeah i got a B in aero here at the academy so i have a very basic understanding of airflow, and on top of that we barely scratched the surface (of air?) of aerodynamics and airflow properties, but with this little knowledge i dont think the stock hole will add any resistance, I just think it will keep the air from the ram air intake to build any pressure, so it is just clean air coming into the engine versus pressurized air that would enter if it were a turbo or supercharger or something like that. but hey with a valve or a direct ram air intake it might build a whole .1 psi greater than ambient air pressure! but hey, i feel good about getting the clean colder air coming in, now my question is what will happen if im driving behind one of you smokers with rear exit exhausts and i get all that in my engine? haha jk, i dont think that would do anything :p

[907DAVE]

Originally Posted by ticopowell

now my question is what will happen if im driving behind one of you smokers with rear exit exhausts and i get all that in my engine?

You might make some actual HP's............j/k

[Longshot270]

So in the spirit of gaseous fluid dynamical science, to find whether the ram air setup works or not we will....flip a coin.

I say if the buttometer shows improved readings for less than $50-$100 then it is good enough. Especially when many popular products expect you to pay hundreds for a few extra advertised ponies.

I might go back and test mine since I have gotten better at getting data and putting it together into a more sensible form.

Hey, if you see some little ricer with NOS, you can get up behind him and scoop it up.

[ticopowell]

Great idea! but what if i get such a boost that i end up running him over?! haha

[Longshot270]

I was just thinking.
What if instead of a "Y" you put a 90˚? The engine will still be able to bring in air and if you did get going 200+ mph you would get a slight amount of boost.

If I were doing that project on a 5.4 I would cut the intake to allow the "Y" after the stock fender snorkel. That way the preferred source of airflow will be from the bumper instead of the fender. The fender would still be a source, just not as significant as the front. We also have to keep in mind that we can use a 6" inlet but the air is still having to squeeze through the rest of the intake, filter and throttle body. I remember that changes the properties of the fluid but I cant specifically remember how at the moment.
The gotts mod eliminates the largest source of airway restriction. Now you have to open up anything that has less than a 3 inch diameter...so I guess that would be the throttle body which I think is 75 mm to an 80mm. We're starting to get expensive now.

But really this is all a mute point if you aren't either hauling buns down the highway or stuck in stop and go traffic all the time.

[88Racing]

I guess I would steer clear of using anything else besides the fender hole.
Reasoning is mostly to where I live and the weather and debri. I know k+n can handle moisture but I don't think it would be to friendly to the stock panel paper filter. Adding the Y like you guy are doing might be a perfect water in let during rain or snow.
If the tubing intake could be dropped low enough where gravity would help keep the moisture out then that would be a plus.
I know 4.6 has the cylinder shaped filter.
The fender hole is the perfect spot to get away from all this.
Just some thoughts.
Peace!

[Longshot270]

Originally Posted by 88Racing

I guess I would steer clear of using anything else besides the fender hole.
Reasoning is mostly to where I live and the weather and debri. I know k+n can handle moisture but I don't think it would be to friendly to the stock panel paper filter. Adding the Y like you guy are doing might be a perfect water in let during rain or snow.
If the tubing intake could be dropped low enough where gravity would help keep the moisture out then that would be a plus.
I know 4.6 has the cylinder shaped filter.
The fender hole is the perfect spot to get away from all this.
Just some thoughts.
Peace!

I thought about the same stuff down here. Except I worry more about dust and dirt getting sucked in. My filter has to be cleaned every 6,000 miles as it it and the ram air would only increase the amount going in. But if you live in a cleaner area it would be good.