Hood vent opinions

[mikekaz1]

 

Got a set of these vents. Thinking about putting them in the outer hood sections. Seem to fit well. What are your opinions?

[Marine1Texas]

just watch where if any water can get in. Over wiring is not optimal!

[mikekaz1]

Well the pass side is over nothing... right in front of the blower motor in that open area... and drivers is over the brake booster. AND its where the hood is doubled over. So it wouldnt go all the way through to the bay anyways....

 

I dunno, I'm toying with the idea still. Can't decide if I want to cut up my hood or not.

[91Pioneer]

Are you going for looks or function? I'm generally not a fan hood vents.

[Keyav8r]

If they won't go all the way through to the engine bay they won't vent, so why do it? If you're doing it for looks there are probably some aftermarket fake vents that can be attached with 3m double-sided trim tape that won't perforate your sheet metal and can be easily removed.

[HOrnbrod]

I'm not a fan of hood vents either. Here's a ton of options, even one from me:

 

  http://gojeep.willyshotrod.com/HowtoBonnetVents.htm

 

If you are looking for cosmetics, there are several good looking examples there. For functionality to actually lower under hood temps, they are not that efficient. The only thing that actually works well is a cowl hood.

[mikekaz1]

I wish I could find a steel cowl hood!

[Megadan]

Steel? like this one?  Supposedly not being made any more, but a couple sites still list them.  Either they have some or they need to update  http://www.streetbeatcustoms.com/Reflexxion/Hoods/Jeep-Cherokee-Reflexxion-Domination-Series-Steel-Cowl-Induction-Hood-_-731800/829453/

[mikekaz1]

:drool:  yaaaas steel cowl hood!!!!

[Megadan]

I wouldn't discount hood vents entirely. They may not work at speed aerodynamically, but at low speeds and idle they will still allow heat to escape.  About the only issue with them is water getting into the engine bay, but there are things you can do to direct the water away without affecting the ability for heat to escape.

[Marine1Texas]

ImpulseRocket89, on 08 Apr 2016 - 11:36 AM, said:

I wouldn't discount hood vents entirely. They may not work at speed aerodynamically, but at low speeds and idle they will still allow heat to escape.  About the only issue with them is water getting into the engine bay, but there are things you can do to direct the water away without affecting the ability for heat to escape.

Like creating a baffle or small pan at the bottom of the vent that would hold the water allowing it to dry up or push it to a area that would not be harmful. that is a good idea .

[benjy_26]

Hood vents may not be the most efficient way to get rid of heat, but they probably do allow some heat to escape. I can feel some heat rising out of the engine cover vents on my MR2 when it's idling.

[Megadan]

Those vents actually function at speed on your MR2.  That rear window and sail panels create a low pressure zone right above the engine bay and will pull the heat out.  That's why a lot of mid engine cars have vents in that area, like the Fiero and many Ferraris from that era.

[benjy_26]

[Megadan]

lol, they definitely copied the Ferrari design a bit. 

[ScottJeep]

Have done the Pontiac vents before.... years ago before it got so popular

(meaning damn every set you find are ex$pen$ive) and I was pretty happy with.  

 

Ran them mostly without the drip pans and they worked very well.