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Unread 07-26-2008, 08:07 PM   #1
LCFRJEEP
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Your thoughts on hood vents/ hood louvers?!?!?!

I know like so many others, my XJ can be pretty dang hot to the touch after running for long periods of time. I was trying to think of ways to aliviate this issue. I did the search for hood vents and found all kinds of different ways to install them but found very little comments on if they really liked them/ hated them or if they even really did their job. Any one out there have hood vents/ hood louvers installed on your XJ's?? If so, do you like them, were they worth the trouble installing them and are they actually functional in relieving the engine compartment of excess heat?? Any and all info GREATLY appreiciated.

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Unread 07-26-2008, 09:05 PM   #2
afguy
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I dont have any personal experience with them, but I am going to install some gen-right louvers in the future.

http://www.genright.com/category.aspx?categoryID=117
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Unread 07-26-2008, 09:16 PM   #3
bullitt_9350
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I just installed mine, so I don't really have any results yet. I can see heat coming out of them at stoplights and can feel it radiating out standing next to it, so they have to be doing something.

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Unread 07-26-2008, 09:23 PM   #4
JeEpErWaNaBe
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Quote:
Originally Posted by bullitt_9350 View Post
I just installed mine, so I don't really have any results yet. I can see heat coming out of them at stoplights and can feel it radiating out standing next to it, so they have to be doing something.

Wow you Jeep looks amazing!! what kina vents are those?
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Unread 07-26-2008, 10:52 PM   #5
eliassami5
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Quote:
Originally Posted by bullitt_9350 View Post
I just installed mine, so I don't really have any results yet. I can see heat coming out of them at stoplights and can feel it radiating out standing next to it, so they have to be doing something.

do the vents look lopsided or am i just seing things? the one on the left seems to be closer to the center at the top of the vent than the other vent does..sick jeep btw
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Unread 07-27-2008, 03:42 AM   #6
LCFRJEEP
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Ok great thanks guys. I guess my question would be, do you think because of the hood vents/ hood louvers the under the hood temps lower and in turn the coolant temps lower?? Thanks guys!! BTW, bullitt_9350 , your XJ looks SEXY!!!
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Unread 07-27-2008, 05:34 AM   #7
xjfever
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I don't personally have them, but most people claim a ten degree reduction in coolant temps.
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Unread 07-27-2008, 05:48 AM   #8
titosgreen95yj
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about 10-12 degrees cooler
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Unread 07-27-2008, 06:13 AM   #9
LCFRJEEP
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Great Thank you very much for all your input!!
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Unread 07-27-2008, 10:53 AM   #10
collkid
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what about rain and snow?
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Unread 07-27-2008, 11:16 AM   #11
winkosmosis
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Isn't it bad to have water falling on your stuff? Do vents really do anything that having a completely open bottom doesn't already do?
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Unread 07-27-2008, 11:19 AM   #12
justinwalden
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heat rises so the bottom being open really has no effect
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Unread 07-27-2008, 11:23 AM   #13
myriad360
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Another chance to plug my favorite site...
Hood Installs
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Unread 07-27-2008, 11:30 AM   #14
srmitchell
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Thats cowl hood is amazing.
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Unread 07-27-2008, 11:45 AM   #15
winkosmosis
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Quote:
Originally Posted by jcwalden View Post
heat rises so the bottom being open really has no effect
Hot air floats on top of cooler air, but only when it's stagnant. The engine bay has fans blowing air into it, which would exit on the bottom. It's a constant flow of air, and also the slipstream below the Jeep should suck air out of the bottom too. The smooth flow of air over the hood might have a bigger effect at high speed though (assuming it is smooth).

Has anyone ever put fans to blow up out of hood louvres?
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