Increasing air flow through grill

[Zooks527]

Sort of. The real answer is you want a pressure differential, and preferably the larger differential, the better. The high pressure side pushes, and the low pressure side pulls.

No. You cannot "pull" a (Newtonian) fluid. Air (or any other fluid) flows from a region of high pressure to one of lower pressure as a function of the pressure exerted by the higher pressure region, with rate being a function of the pressure differential. That's it. Flow is achieved as a function of the force exerted on the fluid and, by definition, a vacuum exerts no force in any direction.

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[shogun32]

IDK where we established that boxing the front does *no* good?

sorry, that was supposed to have been a question-mark. (fixed)

I can see how boxing "focuses" or maximizes the pressure instead of letting to escape around the edges.

I'm thinking 1.5-2" thick 'boxing' foam (fairly stiff, more so than common weather stripping) might be used to fashion a 'duct'. No idea how heat resistant some of these materials are...

Maybe high-density charcoal foam?

 

[Ewheels]

No. You cannot "pull" a (Newtonian) fluid. Air (or any other fluid) flows from a region of high pressure to one of lower pressure as a function of the pressure exerted by the higher pressure region, with rate being a function of the pressure differential. That's it. Flow is achieved as a function of the force exerted on the fluid and, by definition, a vacuum exerts no force in any direction.

Jesus dude, drop the specifics; no one cares.

A fluid will always flow from a region of high pressure to a region of low pressure. So if you put a localized low pressure region at one end of the radiator, it will "pull" the air to that location. No, technically that's not correct as you pointed out but for the sake of conversation, it's still valid.

On TMO, people ask questions like these and real championship race winners explain what works for them or vendors with actual wind tunnel data share their findings.
....on M6G, you get a bunch people over-analyzing things who give the text book definition who probably have never been on track and likely just put around on highways with their bone stock street cars.


It's annoying

 

[Zooks527]

Jesus dude, drop the specifics; no one cares.

Which is why so many people suggest modifications that are at best ineffective and quite often counterproductive.

It's annoying

Try decaf. You'll be happier.

 

[NightmareMoon]

I'm thinking 1.5-2" thick 'boxing' foam (fairly stiff, more so than common weather stripping) might be used to fashion a 'duct'. No idea how heat resistant some of these materials are...

Maybe high-density charcoal foam?

there's a track guy locally who's boxed his radiator (twin turbo setup too). I need to ask him what he used.

 

[Ewheels]

Which is why so many people suggest modifications that are at best ineffective and quite often counterproductive.

True, and I see plenty of that on this website but generally people don't need nor want 100% of the detail when 80% will get them the answer and results they're after. Adding hood vents to create a low pressure region to "pull" air is still accurate. No, that's not how forces are actually applied, but unless you're taking a fluid dynamics exam, the point still holds true.

Like if people were having a conversation about baking cookies and someone jumps in to tell them how heat is transferred to the cookie dough and how the molecular structure of the chocolate chips change.....it's just not needed and frankly annoying. Know your audience.

Try decaf. You'll be happier.

No one has time for decaf.

there's a track guy locally who's boxed his radiator (twin turbo setup too). I need to ask him what he used.

I think that's @Plimmer He said he used corrugated plastic from Home Depot

 

[shogun32]

He said he used corrugated plastic from Home Depot

that's what I plan to use and make angled 'vanes' to corall vortexes - as done on dirt bikes. The stuff is dirt cheap

Seems various foams are not very heat resistant. And data is scarce. Here's a reference for what it's worth. Supposedly the Neoprene foam can withstand 225F.
https://www.thefoamfactory.com/tech/techspec.html

 

[Likeit]

I Dremel mine out on both the driver & passenger side, and also open the fake/seal hood vent scoop for heat extraction out of the engine bay. I did have to cover /secure some wire harness from getting wet.

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