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Old 07-03-2008, 03:53 PM   #1 (permalink)
NismoMax80
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Join Date: Jul 2008
Location: PA
Posts: 49

Max - '04 Nissan Maxima SE
90 day: 24 mpg (US)
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Help details of my underbody/front

I plan to finally add my custom underbody tray, seal my radiator, and maybe block my lower grille. looking for anything i missed, or better suggestions.

http://ecomodder.com/forum/showthrea...xima-3467.html
I have 4 holes from the oem one that i can easily attach the center of my tray. i guess i will drill 6 holes into the bottom of my bumper cover to add more push clips.

i had this concern:
http://ecomodder.com/forum/showthrea...sure-3511.html

ideally we want to seal the grille opening to the radiator, then seal/duct work the air to exit into a wheel well. I realized though that my tray will only reach 7" further back. so air should be able to escape.

OEM for me was having airflow sealed into the rad. losing my oem undertray, i plan to install coroplast horizontally from just below the lower grille to the bottom of the radiator. this should help keep pressure off the tray as well.


So then I will have 2 large grilles flowing into my radiator. I originally wanted to block behind just the lower grille.
BUT -
1 i think my sensor located there needs to detect airflow
2 i will still have a pocket trapping some air

i will not seal in front. will i notice a difference blocking compared to the air flowing into the rad? if blocked, air will enter from up top and flow down anyway.

the stock tray and my wheel wells had air dams, but my new bumper is lower than they were anyway. so i think more air dams will be too close to the ground.


Anything i missed? or other tips?
thanks to everyone here already. i learned A LOT more reading.

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