2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

AAI (Ambient Air Intake)

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Old Sep 13, 2007 | 06:12 AM
  #26  
RotaMan99's Avatar
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Oh, and my horsepower went from 180 at the wheels to 290.
Turbo? Even at that I find that highly doubtful.

I have a collector in my brake duct running up through the fender and then sealing directly into the end of my air filter. I think I am getting good flow because I am constantly getting bugs, leaves and other crap stuck in my filter. Oh, and my horsepower went from 180 at the wheels to 290.
By ram air I mean forcing air intake the intake system as a 100% sealed system. Not directing air to the filter area.

Oh, and the "cold air" thing is all relative. 70 deg is 1/2 of engine bay temps... so it's relatively cold.
Not when its 95-110*F outside
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Old Sep 13, 2007 | 06:53 AM
  #27  
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Originally Posted by RX7Tuner.
Why did you choose to go through the front near the radiator instead of the usual down throught the fender and collect via the brake duct? I would think having the air collect throught the duct gives you fast moving ambient air rather somewhat stagnent/swirling air behind the bumper.
As RotaMan99 noted, I preferred to keep the washer system intact (at least that end of it...the delivery nozzles have been removed from the hood and relocated-via a Buick setup-onto the wiper arms).

Furthermore, this type of setup means there is no fabrication of a box in the engine bay i.e., it was dead simple to do.

I wonder why you think that the brake duct is full of "fast moving ambient air" while the much larger nose intake (located at the same level) is "stagnant/swirling" but, absent any sort of temp/airflow data for the two areas I can't make an argument either way.

It did seem that my method provided the greatest protection to the air filter, a supposition the past few weeks have borne out. The car has driven in rain and wallowed through a few large puddles with the filter remaining dry and unaffected.
Originally Posted by alexdimen
You don't have any radiator ducts... is that panel on top of all that supposed to be a stand in for them?
Yes, and it seems to work at least as well as the stock panels did.
In fact, having spent considerable time looking at that whole area (the front nose/intake) I'm kinda thinking that the top of that space is less important than the sides.

While working on other aspects of the bay I've run the car without the top panel in place ( a quick run to the hardware store, etc.) and seen no temp spikes because of it.
It would appear that the sealing strips on the front of the hood actually do a pretty good job.

Making some close fitting panels on the sides though looks like it would really improve airflow to the coolers- forcing air through them rather than spilling out the side...it's a project that on the list (albeit rather far down, ATM).
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Old Sep 13, 2007 | 09:54 AM
  #28  
RX7Tuner.'s Avatar
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This is my system. I never called it ram air but it is sealed directly to the filter.

My thinking was that all the air collected in the brake duct only has one direction of flow and it all has to go into the end of the filter. With it in front of the bumper, the air collected is only what the engine pulls in through the filter. If you lowered the filter and put it directly in the path of of exposed air, I think you would have better results.

I was kidding about the HP going from 180 to 290.

For everyone out there who is about to tell us this is all meaningless and we aren't gaining any power... I know.

Brian
Attached Thumbnails AAI (Ambient Air Intake)-rx7-047.jpg   AAI (Ambient Air Intake)-rx7-042.jpg   AAI (Ambient Air Intake)-rx7-045.jpg  
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Old Sep 13, 2007 | 10:27 AM
  #29  
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Eh, call it what you want... it still means the same thing.
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Old Dec 3, 2008 | 09:08 PM
  #30  
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nice setup.. i like it a lot... and is that an interfooler on your car?
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Old Dec 3, 2008 | 09:13 PM
  #31  
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Originally Posted by ICEY?
nice setup.. i like it a lot... and is that an interfooler on your car?
You're an idiot, that's the stock oil cooler.
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Old May 23, 2010 | 04:36 PM
  #32  
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Originally Posted by DaBrkddy
Yeah, that looks great! Get it on a dyno... Insulate the intake hose, and see if it makes any difference.... looks kinda close to those radiator hoses to me.

Edit: Tell us what it does in the colorado winter... PM me man.
ya dyno if able. with the intake right next to to radiator and hose it will probably heatthe intake air a little defeatin the purpose of a aai. correct me if im wrong.
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Old May 23, 2010 | 07:06 PM
  #33  
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Originally Posted by datz
ya dyno if able. with the intake right next to to radiator and hose it will probably heatthe intake air a little defeatin the purpose of a aai. correct me if im wrong.
lol check the date of the post before yours its 2 years old
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Old May 23, 2010 | 07:13 PM
  #34  
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Old May 23, 2010 | 08:06 PM
  #35  
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From: reno nevada
looks good
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