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Air Intake Design? Comments?

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Old Jan 17, 2004 | 02:37 PM
  #1  
meffie's Avatar
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Engine: 383ci w/ Blower
Air Intake Design? Comments?

Hi there all. I came up with an idea for a different kind of air intake for my Z28 with a blower. I was hoping some of you might have some opinions on my idea, or maybe some other ideas. Enclosed is a picture of what I'm dealing with.

What I was thinking was making a plastic box around my current air filter as seen. Then removing my drivers side high beam, and installing a hose in the factory 2 1/2" circle behind the light, then running that tube into the plastic box containing my air filter.

I have a serious airflow problem, and have no room, nor other ideas. Any information or comments from anyone would be appreciated.
Attached Thumbnails Air Intake Design?  Comments?-engine3.jpg  
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Old Jan 20, 2004 | 10:27 AM
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I would just leave the filter right where its at. The blowers gonna suck in all the air it wants. All you could do by extending the intake is add a restriction. The airs gonna get so hot in the blow it wont matter if you get cooler air.
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Old Jan 20, 2004 | 05:39 PM
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From: Farmington, NM
Engine: 383ci w/ Blower
Yes I realize the blower is going to suck the air it needs, however all it's sucking at the moment is hot motor air. I'm not talking about adding three feet of tube, maybe 3-4" in order to get cold fresh outside air coming in.
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Old Jan 20, 2004 | 05:47 PM
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you could run a 20ft tube through your hood with a filter on top and i doubt itd help any... the problem is the blower heating up, thus making the air hot. you need an aftercooler or something
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Old Jan 20, 2004 | 07:54 PM
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From: Farmington, NM
Engine: 383ci w/ Blower
Aye, unfortunately there's no intercooler available for my application from Vortech. I'm going to try and contact paxton because they make one, see if the systems can be modified to work together. I just figure if I had some for of cold air coming into the blower it would help or the hot air.
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Old Jan 21, 2004 | 12:21 PM
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im going to transfer this to the power adder forum where it will get more responses.
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Old Jan 21, 2004 | 01:26 PM
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Originally posted by dankhound
I would just leave the filter right where its at. The blowers gonna suck in all the air it wants. All you could do by extending the intake is add a restriction. The airs gonna get so hot in the blow it wont matter if you get cooler air.
1st: how do you know its sucking hot air? how have you quantified this?

2nd: Does it go through that "battery pan"? is the filter just sitting there in the engine compartment or does it go undernieth? Even if it doesnt its likely not sucking hot air.

3rd: What trim head unit is that?

PS: please if you answer 1 then answer all or answer none at all

Last edited by B4Ctom1; Jan 21, 2004 at 01:28 PM.
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Old Jan 21, 2004 | 01:45 PM
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Car: 88 IROC
Engine: 305 TPI
Transmission: 700R4
So if the air filter is below that tray where the tube goes which is connected to the inlet side of the blower what is underneath the tpi air duct housing connected above it?
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Old Jan 21, 2004 | 02:58 PM
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Even though the blower is heating up the air much hotter than the engine bay air, it's a matter of adding heat to it. Adding 100 degrees to 60 deg air is 160 deg, while adding it to 120 deg air is 220 deg, and quite a bit hotter than 160. The colder the intake air, and the less restriction the blower has to suck through, the lower the outlet temps will be.

A.
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Old Jan 21, 2004 | 03:37 PM
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I hard piped mine, put a hole where my battery used to sit and put a K&N under the car

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Old Jan 22, 2004 | 09:22 AM
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From: Timrå, Sweden
Car: 1984 Corvette
Engine: Turbo 350
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Originally posted by askulte
Even though the blower is heating up the air much hotter than the engine bay air, it's a matter of adding heat to it. Adding 100 degrees to 60 deg air is 160 deg, while adding it to 120 deg air is 220 deg, and quite a bit hotter than 160. The colder the intake air, and the less restriction the blower has to suck through, the lower the outlet temps will be.

A.
This is very true.

At moderate boost levels it is better to get low restriction cold air to the supercharger and skip the intercooler than to use an intercooler and let the supercharger get hot air ... The air temperature at the intake will be just as low with less restriction.

It is best to use both an intercooler and cold air.

A friend of mine put a the air filter above the headers on his 1986 Camaro. He measured the temperature in the air tube between the air filter and superchager when driving i city traffic ... it was about 170F and sometimes above 220F ...

When using cold air from the front of the car the temperature AFTER the superchager did not go above 170F ( about 7 psi boost ). When driving in city traffic (no boost) the temperature after the superchager was not much higher than outside air temp.
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Old Jan 22, 2004 | 07:47 PM
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From: Farmington, NM
Engine: 383ci w/ Blower
Originally posted by B4Ctom1
1st: how do you know its sucking hot air? how have you quantified this?

2nd: Does it go through that "battery pan"? is the filter just sitting there in the engine compartment or does it go undernieth? Even if it doesnt its likely not sucking hot air.

3rd: What trim head unit is that?

PS: please if you answer 1 then answer all or answer none at all
1: The filter is sitting where my old windshield washer resevoir (sp?) was. There is no direct airflow there. With my hood poped, at idle, standing in front of the car you can feel the heat coming off the motor.

2: No my battery pan is on the pass side of the car. My evaporater canister is mounted underneath where my air filter is now, and I'm not sure there's another place I could locate it in order to drill down through,

3: It's an S-Trim


SpeedJunkie: The TPI airfoil is currently not in use, except blowing air on my intake elbow. Because of the size of the elbow, there's no way to route my air intake back around to that location which would be optimal (see picture).
Attached Thumbnails Air Intake Design?  Comments?-engine.jpg  
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Old Jan 22, 2004 | 07:49 PM
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From: Farmington, NM
Engine: 383ci w/ Blower
[QUOTE]Originally posted by biggtime
[B]I hard piped mine, put a hole where my battery used to sit and put a K&N under the car


What setup is that Biggtime? Paxton? I'm assuming that's an intercooler up front there too?
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Old Jan 22, 2004 | 08:49 PM
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Its a p600 procharger I have a D1 coming. Yes it is a spearco core 20x12x3.5
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Old Jan 23, 2004 | 04:51 AM
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Originally posted by meffie
1: The filter is sitting where my old windshield washer resevoir (sp?) was. There is no direct airflow there. With my hood poped, at idle, standing in front of the car you can feel the heat coming off the motor.
The fenders are high pressure areas on most of these cars... there are big holes in front of the inner wheel housings/strut towers going into this area, and this is where you filter is mounted, being fead relatively cool, dense air...
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Old Jan 23, 2004 | 06:57 AM
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The fenders are high pressure areas on most of these cars...
there are big holes in front of the inner wheel housings/strut towers going into this area, and this is where you filter is mounted, being fead relatively cool, dense air...
I have the same problem with mine. My K&N is too hot to touch. I've considred routing it inside the fenders, but sitting on that tray where the battery used to be is almost as bad as sitting right over the header like ATI.

I've seen a few guys on here use their cowl hoods with air boxes, but I'm guessing the airbox gets just as hot. Heat rises.

I wonder if SLP's cold air box could be used. It mounts to the inner fender and sucks cold air in from that area.

-- Joe
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Old Jan 23, 2004 | 07:07 AM
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From: SALEM, NH
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Axle/Gears: 3.89 9"
I'm thinking of just buying this. Sticking the K&N in it.


Here is the link:

http://www.slponline.com/view_produc...&SHOWEMAIL=Off

-- Joe
Attached Thumbnails Air Intake Design?  Comments?-slp-cold-air.jpg  

Last edited by anesthes; Jan 23, 2004 at 07:52 AM.
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Old Jan 23, 2004 | 07:28 AM
  #18  
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From: Farmington, NM
Engine: 383ci w/ Blower
Originally posted by anesthes
I'm thinking of just buying this. Sticking the K&N in it.

-- Joe
Got a part number/location on that?
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Old Jan 23, 2004 | 07:52 AM
  #19  
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From: SALEM, NH
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If you decide to buy it, and install it please please send us detailed pix. Thats one of the last things I have to do this winter to finish up my project (which is in peices right now!)

-- Joe
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Old Jan 23, 2004 | 04:54 PM
  #20  
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I would try putting a hole in the tray at the very least, and even relocating the canister once more get the filer below the tray instead of on top of it. also consider foil tape or other foil insulation of the inlet flex tubing.
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Old Jan 23, 2004 | 07:02 PM
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I've seen a few guys on here use their cowl hoods with air boxes, but I'm guessing the airbox gets just as hot. Heat rises.

Not quite true, Joe. I've proven this with one of my air temp gauges with the sensor mounted in the airbox. The temp is typically about five degrees above ambient. Of course, this setup is with a 2-inch cowl hood.
Attached Thumbnails Air Intake Design?  Comments?-2013.jpg  

Last edited by Willie; Jan 23, 2004 at 07:08 PM.
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Old Jan 23, 2004 | 07:08 PM
  #22  
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From: SALEM, NH
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Axle/Gears: 3.89 9"
Not quite true, Joe. I've proven this with one of my air temp gauges with the sensor mounted in the airbox. The temp is typically about five degrees above ambient.

This is an old pic, but sufficient to get the idea.
I had considered doing that, but I thought using the cowl to expel engine heat was a better idea. ??

-- Joe
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Old Jan 24, 2004 | 02:29 PM
  #23  
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From: Farmington, NM
Engine: 383ci w/ Blower
I've thought about going the cowl method but haven't found any decent looking ones with the true ram air that I could direct my inlet too.
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