So I was a little bored today and thought the grille might really be hurting airflow of the heatexchanger, especially since I have a billet grille on top of the stock plastic one. Anyway, results are attached in a pdf. Download the attachment and change the extension from .efi to .pdf

My conclusion is having the grille off does not help the maximum temperature reached or the time it takes to heat up during a run. It also does not lower the standard intake temp an appreciable amount in my opinion. However, it greatly reduces the time to return to the initial temperatures before the run, and appears to help with heat soak as well.

...I really need a bigger heat exchanger

 

You probably have more air going under the truck than through the grille. If you had an air dam like a road-race car, it would lower the air pressure in the engine compartment, and allow more air to go through the grille.

Did you remove the stock chin spoiler? I don't know if your truck had one. Even one of those would help reduce the under-truck airflow, in my opinion.

 

Like you said, looks pretty conclusive that it helps with temp recovery time. Cool stuff, didn't know it would make that big of a difference.

 

My truck didnt come with one like the older ones. It still looks the same as in my sig. Im sure my big lights werent helping airflow any....or well they may have made the flow more turbulent around the heatexchanger which would actually help cool it more...

 

Atomic, did you see the link I posted for the HX thread?

 

I did. I am thinking about either doing that, or the big hex from frozen boost. My only issue is where to put my trans cooler since I definately want to keep it.

 

I will have to take some measurements but i dont see a problem, or having to move the tranny cooler with the frozen boost one.

 

this is my setup now,



I would like to keep the tranny cooler where it is and just put a new hex in front of it. I dont like the idea of putting it so exposed on the bottom.

 

My A/A intercooler is in the same spot as yours. I made the brackets to have the intercooler sit so its hit by both the bumper slots airflow (with a small sheetmetal deflector) and air from the grill opening to allow my transcooler and radiator as much airflow as possible. Maybe you could move the cooler down a little for the smae and just make a small air deflector for the bumper slots?

 

Yea, I am more worried about the depth front to back then the vertical height