I used to run black raptor lined poison spyder louvers but changed them for brushed alu genright ones recently
Anyone install hood vents?
- Thread starter 1TrackJack
- Start date
I ran the Poison Spyder one on my previous TJ. I realized that running a stainless header was causing damage to the paint on the hood. It was starting to crack and fade.
The cooler air at night is where the power increase comes from. Water vapor in the air definitely reduces power. Water injection is used to slow down combustion when the liquid turns to vapor. There is no benefit to adding water unless you don't have enough octane.
There is always a battle between the designers, engineers and bean counters in the auto industry. I just typed my reply before I saw your post.
Never underestimate the bean counters.
One thing I did notice after installing hood vents was the hood no longer “fluttered” at highway speed.
The paint on poison spyder ones started to peel off pretty quickly, Raptor liners lasted a few years but I think it heat and expansion made the edges begin to crack around the rivets. hoping I don't have these issues with he raw alu
replying on this old thread as, no clue why, I am started looking to poison spyder hood vents.
No issues in temperature, just like the estethics and autoconvinction I need it.
I saw there are not many 'reasons why' to mount it, so I'll ask for reasons not to buy: I am mostly scared of cutting my hood, as well as eventual issues on electrical components done by rain/mud/snow/other.
As our offroad is frequently muddy/wet, and as it is in tight woods/forest, am I seeking for problems I don' have today?
thanks for your help!
No issues in temperature, just like the estethics and autoconvinction I need it.
I saw there are not many 'reasons why' to mount it, so I'll ask for reasons not to buy: I am mostly scared of cutting my hood, as well as eventual issues on electrical components done by rain/mud/snow/other.
As our offroad is frequently muddy/wet, and as it is in tight woods/forest, am I seeking for problems I don' have today?
thanks for your help!
Mine came with one. I don't have covered parking so it lives outside. No problems yet.
When I ram a snow bank I can see snow come out of them
It might be just my impression, but hood vents significantly improve air circulation at highway speeds, resulting in better handling at highway speeds. The air is no longer trapped under the hood, creating resistance, but rather is extracted through the hood itself.
I've got a V-8 under my hood so I added extra vents when I did mine.
You drill the corners first.
I have a air nibbler which cut about 80% of the hood then the rest I did with a body saw.
The holes cut
Then I painted the edges of all the cuts. And installed the hood vent.
thanks Wildman for your pics, I saw them in the thread and that's the reason why I want to mount it ! your fault!!
very cool job, bravo!
you fixed it with rivets or with nuts & bolts? To cut do you think a normal angle grinder would work?
very cool job, bravo!
you fixed it with rivets or with nuts & bolts? To cut do you think a normal angle grinder would work?
I used button head screws & lock nuts. I used a angle grinder when I did it the first time on my old hood, it's not as nice but yes you can do it. Or get a saber saw. Sorry for making you want to do this mod... HEHEHEHE it always seems to happen.
https://www.amazon.com/SKIL-Amp-Corded-Saw-JS313101/dp/B07FCTP2NM/?tag=wranglerorg-20
That would be the easier way.
Is there a reason that the passenger side vent faces forward and the driver side faces rearward?
Just curious if there's a functional benefit to that.
That picture was when I was still mocking things up. Both side vents are facing rearward on the completed project.
Limestone
Member
My TJ came with one otherwise I would not have done this. The other, often over looked downside other than the big opening in your hood is that your wiper fluid nozzle is gone. I cut a hold in the hood vent (irony not lost on me that I cut a hole in the thing that has a hole in my hood) so I could have one again to pass safety inspection.
I'm so glad to have it in winter. EVERYTHING gets kick up onto the windshield.
I'm so glad to have it in winter. EVERYTHING gets kick up onto the windshield.
Must have been an off brand version as the Poison Spyder one I have has the cutouts to go around the washer nozzles.
Unless you have done major work to seal your engine bay for some reason, the air is never trapped under the hood, it simply flows out the easiest path, which in a stock vehicle is under and out. In a stationary or slow moving vehicle, heat naturally wants to flow upward, so a hood vent shouldl allow that. In a fast moving vehicle, the air may or may not flow out of a hood vent. Remember, there is a high pressure area that builds above the hood, in front of the windshield, which is why a cowl vent and cowl induction works.
It would be interesting to see an actual wind tunnel test of a stock hood Jeep vs vented, but I know that's too expensive.
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