LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

colder cai???????

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Old Nov 4, 2003 | 08:32 PM
  #16  
pelebkf's Avatar
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again it would be very cool to have the air come stright up through past the radiator and in to the tb from the front. is this possible on the lt1s?
Old Nov 4, 2003 | 08:35 PM
  #17  
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Originally posted by speed_demon24


I bought it for like 10 dollars from lowes.
Did you fabricate it yourself or is there something at Lowes that follows the same contour?
Old Nov 4, 2003 | 08:41 PM
  #18  
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It is a heater duct from lowes. You know where the exhaust from the dryer exits your house, or fan above the stove. I cut out the circle and pop-rivited it in.
Old Nov 4, 2003 | 08:43 PM
  #19  
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cool...any pics?
Old Nov 4, 2003 | 08:46 PM
  #20  
1996 | Z28 SS's Avatar
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Thats exactly what I used... only I got mine from The Home Depot.

Cut a whole in the splash gaurd then dropped the vent down through it. There will be overhang on the vent so it doesn't just go right through. And you just bolt the splash gaurd and the vent. (did this with the gaurd off btw) Then I just used some wire mesh so leaves and other big crap doesn't get it.

Trevor
Old Nov 4, 2003 | 08:50 PM
  #21  
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I have the Moroso CAI, it works great. Put your hand on the plastic duct and that baby is nice and cool.
Old Nov 4, 2003 | 08:51 PM
  #22  
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Cool

Originally posted by 1996 | Z28 SS
First off... I said HAND not head

Second of all... if you cut and make an air scoop under your cai in the splash gaurd.. the wind DOES cool the air being drawn in... again all I have to say is

edit - btw.. one guy on this board gain .04 in the 1/4 mile just by adding the air scoop.

Trevor
First off, the wind is the air. Second off, the wind/air is stationary. Your car is moving, not the air. The air scoop gain is from the vaccum that is now not present as before in the fenderwell, coupled with the slight ram air effect.
If you aim a fan on a thermometer it will not drop in temperature (assuming it is not at a temperature front) because the thermometer is sitting in the ambient room temperature and the fan is moving air that is also ambient room temperature towards it.

I would say that cooling would be better acheived by a methanol injection system is you were serious about it.

-Shannon
Old Nov 4, 2003 | 09:10 PM
  #23  
1996 | Z28 SS's Avatar
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I meant that the wind IS the air being drawn in. And I do agree that part of the gain of making the scoop is so that there is no vacuum now because it's opened up thus more air. But what I'm saying is. The outside air/wind being drawn in by the scoop is much, much cooler than just the stale air sitting in the fender wall that would be there without a scoop. Going by what your saying... if you were to drive in 30*C and minus 20*C temperatures, both going at the same speed.. the air being drawn into the CAI would be the exact same temperature with the air scoop?

Trevor

Last edited by 1996 | Z28 SS; Nov 4, 2003 at 09:13 PM.
Old Nov 4, 2003 | 10:45 PM
  #24  
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Originally posted by 1996 | Z28 SS
I meant that the wind IS the air being drawn in. And I do agree that part of the gain of making the scoop is so that there is no vacuum now because it's opened up thus more air. But what I'm saying is. The outside air/wind being drawn in by the scoop is much, much cooler than just the stale air sitting in the fender wall that would be there without a scoop. Going by what your saying... if you were to drive in 30*C and minus 20*C temperatures, both going at the same speed.. the air being drawn into the CAI would be the exact same temperature with the air scoop?

Trevor
The air being drawn in will be cooler, but not because of it's speed, but because of it's location. If you drive in 30* air, the air coming into the filter will be 30*. Likewise with 20* air, filter will receive 20* air.
The air doesn't cool down because of velocity. The air isn't actually moving at all. But, yes, the location the air drawn form may pull in some air wth a lower ambient temp

-Shannon
Old Nov 4, 2003 | 10:53 PM
  #25  
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this idea has been proposed before...basically routing the intake duct to grab air from the passenger compartment, so when the AC cools that down, the engine feeds from the already cool air. Since the compartment is so large, it isn't going to warm up during the <14 seconds the car is at WOT and the compressor is off.
Old Nov 4, 2003 | 11:08 PM
  #26  
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Originally posted by speed_demon24


I bought it for like 10 dollars from lowes.
what is that for? a mod to pick up water or something?

i would never do that... its saying 'i'm here to suck not just air, but water'
Old Nov 4, 2003 | 11:39 PM
  #27  
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Originally posted by 1996 | Z28 SS
I meant that the wind IS the air being drawn in. And I do agree that part of the gain of making the scoop is so that there is no vacuum now because it's opened up thus more air. But what I'm saying is. The outside air/wind being drawn in by the scoop is much, much cooler than just the stale air sitting in the fender wall that would be there without a scoop. Going by what your saying... if you were to drive in 30*C and minus 20*C temperatures, both going at the same speed.. the air being drawn into the CAI would be the exact same temperature with the air scoop?

Trevor
You obviously understand nothing about physics. Yes, if you are driving and you are pulling in air from the outside of the engine bay, regardless of the speed you are going, the air entering the air filter by the air scoop will be the ambient temperature of the air. So if it is 30C out, the air temp going into the engine will be 30C. If it's 20C, it's 20C. And so on. Moving air does not cool it down. In all reality, moving air actually causes it to HEAT up, due to the molecules hitting each other. However, at the relatively slow speeds that earth-bound vehicles moves, this effect is not even measurable. You'd need something moving at speeds greater than sound (such as an asteroid or the space shuttle entering the atmosphere) to produce this effect. It's commonly called drag friction or drag effect.

Now for your idea of holding your hand out the window and feeling it that it is colder, try this. Put a thermometer in front of a blowing fan in a closed room. Leave it there for however long you want (10 minutes, and hour, whatever). Go back and check the thermometer. It will read the same temperature. Why? When you put your hand in front of the fan, you can feel the cool air? Simple. Regardless of hot or cold, your body is emitting moisture. When you blow air across a surface with moisture, some of the moisture will evaporate, taking heat with it. A fan blowing air across your skin or you sticking your hand out the window of a car results in alot more moisture evaporating and taking heat away than if your skin is just sitting with little or no air flow moving across it. It feels cold to you, because your skin is losing heat. This is the same reason why we sweat when it is hot out. Evaporation steals more energy than almost any other cooling system. It's all about the wonderful world of physics!

Last edited by DOOM Master; Nov 4, 2003 at 11:42 PM.
Old Nov 4, 2003 | 11:47 PM
  #28  
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Old Nov 5, 2003 | 12:56 AM
  #29  
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I think when he was saying if you stick your hand out the window the air out there is cold. I think he was talking about if it was cold already your not gonna cool down the air that much to see a postive effect by using the air conditioner to cool it down. I'm not sure how it is in Boston where he is at but i'm pretty sure it gets pretty cold out there. He in cali you can stick you hand out the window and the air out there doesn't feel very cold sometimes. Either way to his defence i think what he was saying was misunderstood.
Old Nov 5, 2003 | 02:42 AM
  #30  
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It doesn't matter if your in boston or in cali...It has to deal with the humidity in the air and how saturated it is.If it's very humid then the evaporation rate is decreased and it doesn't feel very cold.If the air is dry then it will feel a good bit cooler regardless of the air temp. Evaporation is a endothermic reaction which means it uses heat to make the change from a liquid to a gas. Thats why if it's humid out..you sweat like a pig!!!Chemistry does wonders!!!



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