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Wolf_Tm 01-15-2014 05:09 PM

Aero help
 
Hi All,
I need to move the engine and trans oil radiators away, so I'd like to know if these are points of *GOOD* pressure, assuming that I'll open an exit for the air in front of the wheel.

http://i41.tinypic.com/2hn7s53.jpg

http://i41.tinypic.com/2dtyjk1.jpg

PS: engine bay is separate from these vanes
Thank you.

kach22i 01-15-2014 05:53 PM

I think those front corners are both high pressure and high flow areas which is why the Porsche 911 and Boxster-S utilize those locations for their split radiators (water cooled models).

http://www.bombaydigital.com/boxster/projects/radiator/
http://www.bombaydigital.com/boxster...s/overview.gif
http://www.bombaydigital.com/boxster...fore_thumb.jpg

Somewhere in the forum is a CFD image of it.

http://en.wikipedia.org/wiki/Porsche_996
http://upload.wikimedia.org/wikipedi...iert_Seite.jpg
http://upload.wikimedia.org/wikipedi...002_911C4S.JPG

aerohead 01-15-2014 06:22 PM

radiators
 
It looks like you have unused space on either side of the inter cooler.Since this location is right at the forward stagnation point,it would be the preferable location if you could squeeze the other two coolers into those spaces.

Wolf_Tm 01-16-2014 09:46 AM

Quote:

Originally Posted by kach22i (Post 407293)
I think those front corners are both high pressure and high flow areas which is why the Porsche 911 and Boxster-S utilize those locations for their split radiators (water cooled models).


Yes I know some cars put coolers and intercoolers, but could it be that some front shapes could reduce pressure in those points?

The 911 seems to have a more squared front bumper, while mine seems more "roundy" there...

http://i43.tinypic.com/2mhzgh2.jpg

Really don't want to put coolers in a low pressure point...
Thank you.

Wolf_Tm 01-16-2014 09:47 AM

Quote:

Originally Posted by aerohead (Post 407297)
It looks like you have unused space on either side of the inter cooler.Since this location is right at the forward stagnation point,it would be the preferable location if you could squeeze the other two coolers into those spaces.


Yes, you're totally right... unfortunately there is not enough space for coolers there... the grille is almost touching the intercooler's pipes there...

Thanks

kach22i 01-16-2014 10:12 AM

If you want a visual pressure representation on cars similar to yours go to Bing or Google "image search" using the phrase: cfd pressure automobile....or similar phrase perhaps more specific to your model and make.

https://www.google.com/search?q=cfd+...w=1280&bih=678


Examples of such a search:
Corvette Racing: Inside the GT2 Corvette C6.R
http://www.corvetteblogger.com/image.../080409_19.jpg

S1.Dynamic // 997 Turbo - aeromotions
http://aeromotions.com/wp-content/up...eb-300x210.jpg

If you find that you are not scooping enough air, you can always fabricate something to do so such as the below, but on a larger scale.

Pelican Technical Article: 911 Carrera Oil Cooler Upgrade
http://www.pelicanparts.com/techarti...oler/pic20.JPG

It's not too late to ask, so here I go..............why do you want to go though all of this work?

Quote:

Originally Posted by Wolf_Tm (Post 407289)
I need to move the engine and trans oil radiators away

Why do you need to move them from the current location?

What is the objective/goal?

kach22i 01-16-2014 10:21 AM

Here is that last idea expressed on a Toyota Supra (different year than Wolf_TM's Supra).

Toyota Supra - Type Cars
http://2.bp.blogspot.com/_kSiL_6q6sX...0%2Borange.jpg

It appears to be a corner scoop, yet vented like an "air curtain" to perhaps prevent excessive pressure build up while turning into corners.

YeahPete 01-16-2014 11:13 AM

I see what you are thinking. To be honest those opening on your vehicle serve no purpose but for looks alone and create additional drag on your vehicle.

You can do three things with those holes:

1.) Close them off and try your best to fit the curve of your vehicle.

2.) Catch the air and route it to your brakes.

3.) Leave it.


http://electriccarsreport.com/wp-con...-Drayson_5.jpg
As you see in this picture they are routing the air around the tire at a nice steep angle.

Wolf_Tm 01-16-2014 11:27 AM

Quote:

Originally Posted by kach22i (Post 407369)

If you find that you are not scooping enough air, you can always fabricate something to do so such as the below, but on a larger scale.

Pelican Technical Article: 911 Carrera Oil Cooler Upgrade
http://www.pelicanparts.com/techarti...oler/pic20.JPG

Exactly what I meant... if i needed some kind of scoop as the position of the bumper openings are in low pressure zone.



Quote:

It's not too late to ask, so here I go..............why do you want to go though all of this work?

Why do you need to move them from the current location?

What is the objective/goal?
I need to increase the oil cooler size, removing the current one in front of the engine radiator.

Thanks

Wolf_Tm 01-16-2014 11:33 AM

Quote:

Originally Posted by YeahPete (Post 407377)
I see what you are thinking. To be honest those opening on your vehicle serve no purpose but for looks alone and create additional drag on your vehicle.


That's my suspect too... but it is also true that Toyota put the airbox feed in the left opening, so probably is not just for looks and some pressure is there...


Quote:

You can do three things with those holes:

1.) Close them off and try your best to fit the curve of your vehicle.
Not possible! :)


Quote:

2.) Catch the air and route it to your brakes.
I already catch the air for brakes with 2 duct beside the central intercooler ;)


Quote:

3.) Leave it.
I'll probably try to increase flow there with scoops like the red Porsche above...

Thanks


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