NA & NB Miata Hood Louvers - Gauging Interest - Page 9 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 08-01-2014, 05:04 PM   #161
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Originally Posted by Leafy View Post
I dont care how hot the air in the engine bay is, as long as its not hot enough to melt the electrical connectors and wiring. I care about increasing air flow through the heat ex-changers in the front of the car by increasing the delta P across them. If I just wanted to make it cooler in the engine bay I'd run turn signal intakes and hood risers.
Last I checked, heat exchangers exist to extract heat from the heat-generating components located under the hood. Maybe if your underhood temps weren't like a blast furnace, your heat exchanger would have less heat to try to extract? And isn't it logical that if you can effectively vent all of that heated air out of the engine bay, you've automatically created a path for more cool air to pass thru your heat exchanger?.....assuming your heat exchanger is located in front of the engine bay?

Focus all of your attention on getting heat out of an intercooler so that you can send that cooled air back into an intake that's heated to 250 degrees?

Focus on cooling your engine oil down at the oil cooler.....only to sent it back to an engine that's operating inside a furnace?

Yep, sounds like you have your priorities all straightened out. Good luck with that.
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Old 08-01-2014, 05:06 PM   #162
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Quote:
Originally Posted by VRaptor SpeedWorks, LLC View Post
Last I checked, heat exchangers exist to extract heat from the heat-generating components located under the hood. Maybe if your underhood temps weren't like a blast furnace, your heat exchanger would have less heat to try to extract? And isn't it logical that if you can effectively vent all of that heated air out of the engine bay, you've automatically created a path for more cool air to pass thru your heat exchanger?.....assuming your heat exchanger is located in front of the engine bay?

Focus all of your attention on getting heat out of an intercooler so that you can send that cooled air back into an intake that's heated to 250 degrees?

Focus on cooling your engine oil down at the oil cooler.....only to sent it back to an engine that's operating inside a furnace?

Yep, sounds like you have your priorities all straightened out. Good luck with that.
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Old 08-01-2014, 05:06 PM   #163
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LOL.

Boy, you sure now Miatas, don't you? That made my day.



Well gents, i do believe that settles that, doesn't it? I'm sure glad that was quoted so it can stand forever in the history of MiataTurbo.net.
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Old 08-01-2014, 05:07 PM   #164
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Quote:
Originally Posted by VRaptor SpeedWorks, LLC View Post
Last I checked, heat exchangers exist to extract heat from the heat-generating components located under the hood. Maybe if your underhood temps weren't like a blast furnace, your heat exchanger would have less heat to try to extract? And isn't it logical that if you can effectively vent all of that heated air out of the engine bay, you've automatically created a path for more cool air to pass thru your heat exchanger?.....assuming your heat exchanger is located in front of the engine bay?

Focus all of your attention on getting heat out of an intercooler so that you can send that cooled air back into an intake that's heated to 250 degrees?

Focus on cooling your engine oil down at the oil cooler.....only to sent it back to an engine that's operating inside a furnace?

Yep, sounds like you have your priorities all straightened out. Good luck with that.
quoting this because LoL at understanding of pressure differential and how heat exchanges work.
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Old 08-01-2014, 05:13 PM   #165
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LOL.

Boy, you sure now Miatas, don't you? That made my day.
What do you mean know miatas? I mean thats a failure of understanding basic thermodynamics from a guy who designs parts where knowledge of thermodynamics and thermofluids is paramount to achieving proper engineering design. There's more too louvers than just punching holes in ****.
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Old 08-01-2014, 05:14 PM   #166
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Originally Posted by Leafy View Post
What do you mean know miatas? I mean thats a failure of understanding basic thermodynamics from a guy who designs parts where knowledge of thermodynamics and thermofluids is paramount to achieving proper engineering design. There's more too louvers than just punching holes in ****.
indeed. If there was ever a case of just quitting while you were ahead (or behind) and sucking it up... this is it.

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Old 08-01-2014, 05:24 PM   #167
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Yes....Miatas are soooooo very much more difficult to understand than a twin-turbo V8 mid-engine car. None of the same concepts apply..........and the laws of thermodynamics are completely different. Lowering the oil temp of a transaxle by 120 degrees does not have anything at all to do with thermodynamics and everyone on this forum has a degree in that....right?

Got it.
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Old 08-01-2014, 05:27 PM   #168
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Originally Posted by VRaptor SpeedWorks, LLC View Post
Yes....Miatas are soooooo very much more difficult to understand than a twin-turbo V8 mid-engine car. None of the same concepts apply..........and the laws of thermodynamics are completely different. Lowering the oil temp of a transaxle by 120 degrees does not have anything at all to do with thermodynamics and everyone on this forum has a degree in that....right?

Got it.
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Old 08-01-2014, 05:31 PM   #169
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Yep, we got our transaxles right in the engine bay heat, yup.

No you twit. The temperature in the engine bay's effect on engine temp is multiple orders of magnitude below the heat transfer through the heat exchangers in the front of the car. If you were to cool your engine bay to ambeint temps while maintaining the same front heat exchanger effectiveness the temperature in the fluids that have heat exchangers will change by such a marginally amount that you probably wont have accurate enough measurement devices to measure it.

And ah, lowering the temperature of your transaxle has everything to do with thermodynamics... because thats kind of how it happens. You know, heat transfer and stuff. And I'm sure in that case that having cooler engine by temperatures did actually effect the temperature of that fluid since it doesnt have its own external heat exchange and the bulk of its cooling is accomplished by convection directly off the casing and into the engine bay air.
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Old 08-01-2014, 05:36 PM   #170
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Quote:
Originally Posted by Leafy View Post
What do you mean know miatas? I mean thats a failure of understanding basic thermodynamics from a guy who designs parts where knowledge of thermodynamics and thermofluids is paramount to achieving proper engineering design. There's more too louvers than just punching holes in ****.
You ninja posted me. It was directed to doofus over there, not you.

I was mostly taking delight in the whole thing where he pretty much said that hood risers are the ****.
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Old 08-01-2014, 05:37 PM   #171
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You ninja posted me. It was directed to doofus over there, not you.
I know it was, but this isnt a miata specific problem.
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Old 08-01-2014, 05:38 PM   #172
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You're getting off topic. VR sucks, i just listen to you guys and learn that hood risers are bad and that louvers/vents should go in proper places, not in places that look cool.
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Old 08-01-2014, 05:57 PM   #173
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And yes, this:

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Old 08-01-2014, 06:20 PM   #174
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And ah, lowering the temperature of your transaxle has everything to do with thermodynamics... because thats kind of how it happens. You know, heat transfer and stuff. And I'm sure in that case that having cooler engine by temperatures did actually effect the temperature of that fluid since it doesnt have its own external heat exchange and the bulk of its cooling is accomplished by convection directly off the casing and into the engine bay air.
So you admit that the aluminum case of a transaxle can be effectively cooled by the air, which is the very mechanism by which it transfers it's heat.......but in the same breath, you say that the aluminum block and intake of an engine..... which has roughly the same surface area exposed to the air as the aluminum case of the transaxle mentioned above.......can not be affected one iota.....not to any measurable degree.....by the exact same mechanism? Interesting. So the law of thermodynamics only applies to the aluminum used in transaxle cases and not the aluminum used in engines or intakes?

Listen....I can already hear you come back and say that I'm now claiming you don't even need a radiator or intercooler or oil cooler. Nothing can be farther from the truth. What I am saying is that if you're pumping all of your heat "out" at the front of the car, only to blast that heat right back into the components that you just worked to extract the heat from......aren't you kind of defeating the purpose? What you're doing is the equivalent of putting the condensor coils of a refrigerator INSIDE the refrigerator....with the thinking that the refrigerator will cool off the condensor quicker and therefore the frig will work better......only to find that none of the stuff inside the frig gets cold anymore. The ice-box coils get cold, but all of the air inside the frig is heated by the condenser, and you've just turned your frig into an oven. Yes, it would actually get WARMER in there than the outside ambient temp.

I'm trying to help you guys out here....I really am. I'm not the enemy here, no matter how much you want to make me out to be. Mid-engine cars are a challenge to cool.....much more so than a front engine car. I've done it. Over and over and over again. I'm sure you'll ignore that fact and continue with your foot-stomping and name calling.
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Old 08-01-2014, 06:22 PM   #175
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You don't even know enough about our cars to know that they come with iron blocks and not alum?

C'mon man, who are you kidding? You're not here to help, you're here to bicker because you're bitter because someone "stole" your non-patented idea.

With every post you're you're just coming accross more and more childish. Which in turn is making more and more people think less and less of you.

You're only hurting your own business by being so stubborn. I bet most here will buy from ThePass and not you simply because of how you come off with your posts.
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Old 08-01-2014, 06:30 PM   #176
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Originally Posted by VRaptor SpeedWorks, LLC View Post
So you admit that the aluminum case of a transaxle can be effectively cooled by the air, which is the very mechanism by which it transfers it's heat.......but in the same breath, you say that the aluminum block and intake of an engine..... which has roughly the same surface area exposed to the air as the aluminum case of the transaxle mentioned above.......can not be affected one iota.....not to any measurable degree.....by the exact same mechanism? Interesting. So the law of thermodynamics only applies to the aluminum used in transaxle cases and not the aluminum used in engines or intakes?
Please go post somewhere else. Our Miata blocks aren't even aluminum!

Now that this thread is all crapped up, will you go elsewhere?

Better yet, go to ClubRoadster and start a thread, you would sell eleven billion of your untested product there.
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Old 08-01-2014, 07:04 PM   #177
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And since the blocks are made from iron, everything I just said is false? Because iron is unable to transfer heat? I see.
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Old 08-01-2014, 10:18 PM   #178
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I'm getting funny looks from people while driving around in my NB with no hood on it since it's in the garage
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Old 08-01-2014, 11:15 PM   #179
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Better yet, go to ClubRoadster and start a thread, you would sell eleven billion of your untested product there.
Jesus **** stay away from Clubroadster! Someday I'd like to be able to purchase a non molested NB hood.
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Old 08-02-2014, 01:18 AM   #180
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I'm getting funny looks from people while driving around in my NB with no hood on it since it's in the garage
So how different is the pressure map of the NB vs. NA? And what's the resolution on those maps (like 10 or 15 measurements?)
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