Billet Grille? Airflow?
#1
Billet Grille? Airflow?
Getting ready to put a new set of grill in my xB. In looking at the upper grille, it is solid. No air flow thru this piece of plastic. My thinking is that the more airflow the better. Does it affect airflow adversely by opening this area or will more air be better?
I suppose this was by design by Scion engineers. Could the airflow somehow be altered by opening this space thereby changing the proper flow and negatively affecting cooling? thoughts?
I suppose this was by design by Scion engineers. Could the airflow somehow be altered by opening this space thereby changing the proper flow and negatively affecting cooling? thoughts?
#2
...Yes, many thoughts...
The radiators are cooled with air passing through the two lower grills. The top grill is DAMMED or closed. There are many threads discussing the change in air flow with a open top grill. I would perfer to NOT have rain, snow and slop enter my engine compartment. I like a clean machine. There is also evidence that when the top grill is opened, air is forced under the car.
The more air the better? Maybe not! If it changes the areo-dynamics that all those dedicated Japenes engineer's designed.
Anyway, read all the GRILL threads and decide for yourself. If you choose an open grill, take pictures of how clean your engine compartment is now.
The more air the better? Maybe not! If it changes the areo-dynamics that all those dedicated Japenes engineer's designed.
Anyway, read all the GRILL threads and decide for yourself. If you choose an open grill, take pictures of how clean your engine compartment is now.
#3
Out of curiosity...
What "evidence" was ever presented to show that if you install an open grill that air is forced under the car?
That statement seems very misleading. To the point that someone that didn't know any better might think that by installing an open grill their car would be unstable due to lack of downforce.
What "evidence" was ever presented to show that if you install an open grill that air is forced under the car?
That statement seems very misleading. To the point that someone that didn't know any better might think that by installing an open grill their car would be unstable due to lack of downforce.
#4
if you're thinking about swapping out the grill and are worried about air flowing through the "grill", you can have a piece of aliminum fabbed up to prevent this. If you are getting a billet grill I'd paint the back piece black so not to distract from the grill. Have any of you turbo guys used this area behind the "grill to place a front mount intercooler? They might have a better idea on the airflow through an opened grill.
#5
i have noticed that with my billet grille installed, my fan dont kick on as much anymore......seems to benefit me..less fan on = cooler engine due to air flow?? i guess if you like it get it.
#6
If I remember right someone here with an aftermarket watertemp gauge posted that the water was hotter with an open grill on top. Only 10 or 15 degrees. Not sure if they ever figured out the science to it. But that post must be 2 or 3 year old by now.
#7
Originally Posted by Spider13
If I remember right someone here with an aftermarket watertemp gauge posted that the water was hotter with an open grill on top. Only 10 or 15 degrees. Not sure if they ever figured out the science to it. But that post must be 2 or 3 year old by now.
#8
Senior Member
Scikotics
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Scinergy
Join Date: Jul 2004
Location: Wilson Scion (IA)
Posts: 2,235
If you have an open top grille made of billet you're going to get a whistle at speed. Also, as was mentioned, your engine bay will be FILTHY!
I generally run overlays on the two bottom grilles in addition to the solid top grille and have never had cooling problems.
-Alex
I generally run overlays on the two bottom grilles in addition to the solid top grille and have never had cooling problems.
-Alex
#9
Originally Posted by grizzly_choppers
If you have an open top grille made of billet you're going to get a whistle at speed. Also, as was mentioned, your engine bay will be FILTHY!
I generally run overlays on the two bottom grilles in addition to the solid top grille and have never had cooling problems.
-Alex
I generally run overlays on the two bottom grilles in addition to the solid top grille and have never had cooling problems.
-Alex
#11
Senior Member
SoCal tC Club
SL Member
Team N.V.S.
Scinergy
Scion Evolution
Originally Posted by bryman31
Originally Posted by Spider13
If I remember right someone here with an aftermarket watertemp gauge posted that the water was hotter with an open grill on top. Only 10 or 15 degrees. Not sure if they ever figured out the science to it. But that post must be 2 or 3 year old by now.
as mentioned, the air flow to cool the radiator and stuff is below that.
having the top open will adversely affect that flow.
#13
I still see nothing more than hearsay. I want proof. I don't buy the cooling problem. And I keep seeing conflicting information.
One person claims having an open upper grill forces more air under the car. The next person says it prevents more air from going to the lower grills. That same air being pushed down by the first statement would have to pass the lower grill locations from the second statement.
I want video, pictures, empirical data. Sorry, if you don't like the cynic in me coming out to play. But I am just not one to buy into the hype. And this isn't a personal attack on anyone who is relaying information from other people. I just want to see proof before I swallow these claims hook line and sinker. Until then, a full set of B-Cool Billet grills will be the next exterior modification for the wife's xB. (We can live with/deal with any whistle that might show up.)
One person claims having an open upper grill forces more air under the car. The next person says it prevents more air from going to the lower grills. That same air being pushed down by the first statement would have to pass the lower grill locations from the second statement.
I want video, pictures, empirical data. Sorry, if you don't like the cynic in me coming out to play. But I am just not one to buy into the hype. And this isn't a personal attack on anyone who is relaying information from other people. I just want to see proof before I swallow these claims hook line and sinker. Until then, a full set of B-Cool Billet grills will be the next exterior modification for the wife's xB. (We can live with/deal with any whistle that might show up.)
#14
I don't really think it's a big deal. However, if more air is going IN to the engine compartment where is it going to EXIT? ...For the most part under the car. Some of it will vent from under the back of the hood but most is going under the car. Path of least resistance and all.
I'm glad to hear that you wont "...buy into the hype." But, I dont think anyone is going to give you Video proof.
The real question is ... Is it Grill or Grille?
I'm glad to hear that you wont "...buy into the hype." But, I dont think anyone is going to give you Video proof.
The real question is ... Is it Grill or Grille?
#17
I think that people's panties are in a bunch and need to chill out.
BUT... I do think that we need to invest a few thousand dollars and experiment on this with a wind tunnel and various types of grilles!
..but seriously, if it does affect it, it's obviously negligable. so... QUIT CHER _____IN!
BUT... I do think that we need to invest a few thousand dollars and experiment on this with a wind tunnel and various types of grilles!
..but seriously, if it does affect it, it's obviously negligable. so... QUIT CHER _____IN!
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