as stated above,,,

i think style of driving and weather in your area will determine best course of action.

2 weeks ago in seattle we were seeing 100+ temps. that is rare as in breaking decades old records rare.

normally we see highs in the low 90's and that is only a few weeks of the year. average in the summer is high 70's low 80's. fall and winter its in the 40's and 50's with several weeks of 30's and 20's. we see the high and low side of the temperature scale only a few weeks of the year. so really a hood louver does not make sense to me. add in the high amounts of rain in the fall winter and spring and it really doesnt make sense. now side vents i can see,,,

but they have to work in with my silver rover. chrome is for douches!

 

Yeah... If i can get those side vents painted all silver to match my Disco or maybe the mesh part all black with the edge and two center lines silver i think that would be better than chrome. your 04 is Zambezi silver too right?

 

Where would you put side vents on a Disco that would let air in to the engine bay? Unless you cut a hole in the inner wing also. Range Rovers have a different bonnet design.

 

yes it is,,,

i'd have to have the borders painted to match the rig and the grills black

 

it can be done,,,

i know a euro bodyshop that looked at my rig and thought it would be easy to do

 

I have no belief you would run any cooler with these than without. If the best they can do is say "because hot air rises", I'm not very impressed. Seriously, how much airflow do you think coming from the fan/radiator is even going to go through those vents, 5-10%? They're tiny. Waste of money, unless you just like it for the looks.
I'm very surprised to see most of you (and some of you in particular) taken by this...
By the way those vents on the existing Rovers have nothing to do with heat transfer but aesthetics. I assure you that was not a part of the equation when the cooling system was designed!
I must say I am a bit disappointed here.

 

Antichrist is right....

This is where the side vents would have to go on a DII. that wouldn't look too cool... the bulkhead is the red vertical line. A vent located behind the line would only vent out your feet if cut on the inside.



The vent would have to be in the red square... the inner part of the fender would have to be cut and heat wouldn't escape thru the side vent without some way of funneling it to exit through the vent. other wise the heat would escape between the inner fender and outer fender melting your tires!!!!!!!!!!!!!!

 

so then hood vents would be the only logical way...

 

yeah. but i wont do it. not for where I live and the way i drive and wheel.

 

Those hood vents wont remove enough hot air to say so, not unless you had a fan to force the air out.
A Saudi Grille would allow more air into the engine bay, thats what they use in the Middle East where it gets 130*F in the shade.
As long as you take care of your cooling system you wont have problems.
There is a big misconception about our trucks, they do NOT run hotter than any other engine out there, they dissipate more heat because of the all aluminum engine block and heads.
As we all know aluminum dissipates heat better than cast iron, so these trucks just "feel" like they run hotter.
Off roading for 3 hours in 95*F heat with the a/c on in deep sand and climbing steep hills my engine temp never got over 215*F, 5 degrees more then when sitting in city traffic with the a/c on on a 95*F day.
That was using my OBDII scanner that reads live engine data.
Cruising down the road a DI runs at 196*F, city traffic 200-210*F.
My wifes Volvo...exactly the same.
My 2003 E-250 work van, even after 8 hours of continuous running, exactly the same.
(just like any kid I played with my scanner after I got it)