Scott you've probably seen mine but I like the cooling performance I get with mine. I also like the fact (warm fuzzy) they have the bottom deflectors to move water away from engine.
You used some from a camaro or something didn't you?
Hood louvers and hood scoops
- Thread starter LaOutbackTrail
- Start date
You used some from a camaro or something didn't you?
redneck44
Adventurer
Instead of cutting your hood, how about doing the old racers trick of sticking 1/2"-1" spacers between the hinge and the hood, lifting the back edge up (not so easy with side mounted hinges but not impossible).
Gives you side and rear ventilation and is fairly discreet. Also stops your engine getting wet through the holes.
Gives you side and rear ventilation and is fairly discreet. Also stops your engine getting wet through the holes.
I did play with this idea when I was putting my hood back on after painting... It was very difficult to line up correctly with the striker and release.... so decided against it... I think properly placed louvers will look great, when I get to that point.
FellowTraveler
Explorer
AGAIN: Before you cut that hood!
Venting the hood just beyond the radiator shroud is the way to pull the hot air through the radiator and out of engine bay. Any other location past that and you are pulling air into engine bay which is great if you crawl, going it slow off road, drive in town at lower speeds or want to feed a hood scoop. Propping hood a trailing edge pulls air into engine bay as in cowl induction.
My venting is at upper trailing edge of fenders and I've added seals (actually door seals cut to fit) on r/s & l/s edges of hood to prevent ingress of air into those long seams between the fenders and hood. My burb now runs cool in triple digit temps however I now have to use a grill cover so the engine can get to temperature in weather of 40+- deg f or colder. Temp sensitive fuel system requires 170 deg f to be fuel efficient.
Venting the hood just beyond the radiator shroud is the way to pull the hot air through the radiator and out of engine bay. Any other location past that and you are pulling air into engine bay which is great if you crawl, going it slow off road, drive in town at lower speeds or want to feed a hood scoop. Propping hood a trailing edge pulls air into engine bay as in cowl induction.
My venting is at upper trailing edge of fenders and I've added seals (actually door seals cut to fit) on r/s & l/s edges of hood to prevent ingress of air into those long seams between the fenders and hood. My burb now runs cool in triple digit temps however I now have to use a grill cover so the engine can get to temperature in weather of 40+- deg f or colder. Temp sensitive fuel system requires 170 deg f to be fuel efficient.
Good point. I do have access to several Magnahelic gauges, so we were going to do some scientific experimentation based on a few models we found on the web. "We" being an engineering friend who is into race cars... 
Containerized
Adventurer
The louvers actually evacuated a lot of heat from the FJ engine compartment last dry season (110F ambient nearly every day!).
Easy mod and worthwhile, I think, along with opening the "intake" at the front of the hood that was closed from the factory.
I rarely am able to exceed 30 MPH on local roads, so I don't worry much about aerodynamics...
I just figure getting as much air in and out of there for cooling as possible is a good thing.
Less functional during the wet season:
Easy mod and worthwhile, I think, along with opening the "intake" at the front of the hood that was closed from the factory.
I rarely am able to exceed 30 MPH on local roads, so I don't worry much about aerodynamics...
I just figure getting as much air in and out of there for cooling as possible is a good thing.
Less functional during the wet season:
FellowTraveler
Explorer
grimbo
Explorer
I had a Toyota 5k engine in my Samurai and it would get a bit hot on long slow climbs. To fix the problem I cut 5 x 2" holes along the back of the hood facing the windscreen. It worked a treat in dropping the heat at low speeds, no adverse effects at high speed and was an awesome windscreen defroster too
Our Jeep has factory hood vents. They work well too. First place the snow melts. They have a tray under neath to prevent water from entering and do a good job as I dont notice any signs of water leaking in. Not the best pic so here are some links to the same model of jeep.
http://4.bp.blogspot.com/-cWOMJJv8s...YTLFoElh0/s1600/peeps_98jeepcherokee5.9-2.jpg
http://4.bp.blogspot.com/-z3urXxbxy...VyRkD88Oo/s1600/peeps_98jeepcherokee5.9-6.jpg
http://www.flickr.com/photos/40109258@N04/4586200380/
They have a tray under neath to prevent water from entering and do a good job as I dont notice any signs of water leaking in. Not the best pic so here are some links to the same model of jeep.http://4.bp.blogspot.com/-cWOMJJv8s...YTLFoElh0/s1600/peeps_98jeepcherokee5.9-2.jpg
http://4.bp.blogspot.com/-z3urXxbxy...VyRkD88Oo/s1600/peeps_98jeepcherokee5.9-6.jpg
http://www.flickr.com/photos/40109258@N04/4586200380/
Hillbilly Heaven
Explorer
I found a good source for hood or fender vents in all sizes and shapes that don't look like they came from a hardware store or import car parts store. Several people I know have purchased various louvers from Hood Louvers and are very pleased with them.
http://hoodlouvers.com/
Here is a selection guide:
http://www.hoodlouvers.com/wp-content/uploads/2012/06/RunCool-Selection-Guide-Revised-09.10.14.pdf
http://hoodlouvers.com/
Here is a selection guide:
http://www.hoodlouvers.com/wp-content/uploads/2012/06/RunCool-Selection-Guide-Revised-09.10.14.pdf
WanderinWhitlows
Observer
Allot of folks simply put a bushing or spacer between the back of their hood and the brackets to lift the rear of the hood up an inch or a few centimeters. Doesn't damage the hood and helps alleviate some of the venting issues that so many here have mentioned.