Yeah I have read every single post, it still doesnt change the facts. Hot air is down near the pavement so the air is probably not as cool as you think. I guarantee a 1/2hp increase with this modification.

 

Wow where do you get your info? "Hot air near the pavement"? Oh i guess despite the 60 degree air inhabiting the rest of the atmosphere, hot air somehow magically defies the laws of physics and doesnt rise off the ground. Is that based on your 2 year, 1000 case study of air-magic? Not only that, but where does air feed from in an unmodded stock airbox? Inside the engine bay, with no outside direct exposure.
What do you base your 1/2 hp estimate on? All you have on your car is exhaust, springs, a grounding kit, and sway bars. For your mostly stock engine, yea this mod is pretty much worthless. But for folks like me with hundreds of mods, who have been doing this for years, it yeilds much more power since it works in conjunction with the various other cooling and intake mods.

 

^^^ I'm not trying to speak for Junkyard - but it is in fact true (on sunny/hot days) that the ambient temps at ground level are as much as 20* hotter than at grille level.

DaveO (Nissan Sport Mag Editor and previous forum member) and I tested this years ago with infrared digi thermometer. Besides, common sense also confirms this (black asphalt retains and radiates heat).

Any type of induction mod that has to due with drawing in air should be as close to grille as possible.

 

So only in the heat of summer is this true..... and even then, the air is still cooler than engine bay air, which normally feeds the airbox.
Oc can u link your research/findings? Im interested to see your research methodology...

 

engine bay heat doesnt feed the airbox. The duct over the radiator is drawing air form the grille.

as far as "only heat in the summer"... depends on where you live. I'm on So Cal - the majority of the time ground heat is going to be hotter than grille level... I just saw that you are in TX, it's going to be more often than summer for you too.

Anyone can debate this for days... no one is telling you not to do the mod. I'm just telling you facts about the ambient temps from ground level. Suite yourself (but dont try to pretend that it's a power mod).

 

Can u link your research/findings? Im interested to see your research methodology...
And btw, the stock airbox has extremely limited exposure to fresh air from the grille. A large amount if engine bay air undoubtedly enters the airbox as well. This mod dramatically increases the amount of outside air entering the intake, similar to the duct z owners install in their front.

 

all the data is pre IB takeover... search around and see if it still exists... or PM DaveO (he probably still has the data somewhere).

Other than that, no - I'm not interested enough to dig it up.

It's real simple - go to Sears, buy a digi thermometer and measure temps near ground level and at grille level. It's not rocket science.

 

How convenient......

 

 

Well I just went outside to test this theory for myself...the mod opening for air sits approx 1.3 ft off the ground. The grille is only 1 ft above this. By what logic, im not sure, you all seem to think 1 ft of altitude is going to make such a significant air temperature difference, that it will negate the effects of this mod....
I used a digital thermometer app on droid, calibrated against an indoor digi thermometer, and outside by the car thermometer. It showed accurate both times. The temperature where air enters the mod (1.3 ft above ground) showed 22.7 celcius for 5 minutes. Shockingly, the air temperature where air enters the stock box (1 ft higher at the grille) measured a stunning 22.7 degrees celcius for 5 minutes. Amazingly the air is the same temperature as it is 1 foot lower. Incredible!!!

 

Well I just went outside to test this theory for myself...the mod opening for air sits approx 1.3 ft off the ground. The grille is only 1 ft above this. By what logic, im not sure, you all seem to think 1 ft of altitude is going to make such a significant air temperature difference, that it will negate the effects of this mod....
I used a digital thermometer app on droid, calibrated against an indoor digi thermometer, and outside by the car thermometer. It showed accurate both times. The temperature where air enters the mod (1.3 ft above ground) showed 22.7 celcius for 5 minutes. Shockingly, the air temperature where air enters the stock box (1 ft higher at the grille) measured a stunning 22.7 degrees celcius. Amazingly the air is the same temperature as it is 1 foot lower. Incredible!!!

 

Hahaha Air magic. Did you drop out of school in 5th grade? And where do you have hundreds of mods? Seriously? Go read some things okay? Im not telling you to not do this, do as you wish, I mean people put spinner rims and underglow kits on their cars so anything is possible.

Read and learn something.
http://www.builditsmartvc.org/how/smartcooling.php

http://tinyurl.com/278afwj

This thread is delivering. Dont expect a reply from me.

 

@ 2 posts above^^^ 22.7c (73F) isnt exactly "hot" ambient temps... more importantly, 12" isnt going to make a significant difference.

I simply stated that on hot days the ambient temps "at ground level" are hotter (measured as much as 20*) than temps at grille level.

Nothing in that statement addresses what you did with your droid thermometer.

I'll say it again - no one is saying dont do this mod. But drawing temps closer to ground level is pointless (if you are trying to draw "cold air") *take your temps 6" from ground and grille level (non slammed car) on a relatively hot day. If your intake is higher off the ground, then the fact of ground air being hotter doent pertain now does it? However, it is likely that if you take accurate temps on a hot day, you will notice a difference in temps (the temps we took were not a fluke - but it was hotter than 73*).

 

Great DIY! Thanks for taking the time to post.

 

this thread makes my head hurt!