New grill for better airflow?

[azjl#3]

FAR less restrictive ?

Based on what exactly?

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[grimmjeeper]

Simple hood hinge extensions along with pulling the under hood sound liner and engine cover allow heat to rise naturally un-impeded. It works driving or parked and don't let folks's speculations dissuade.

there is no downside, forum follows function. haha, however many unknowing will ask, what happened to your hood.

What were your temps before and after?

 

[azjl#3]

Simple hood hinge extensions along with pulling the under hood sound liner and engine cover allow heat to rise naturally un-impeded. It works driving or parked and don't let folks's speculations dissuade.

there is no downside, forum follows function. haha, however many unknowing will ask, what happened to your hood.

Thats is neat, home brew?

 

[grimmjeeper]

hot and cooler.

So you didn't actually record them?

 

[racerdude90]

my jl came with the gladiator style grill inserts and i notice my fan kicks on quite a bit less than my buddy who has the other style grill inserts.

i’ve thought about opening up the rubi vents but i heard the engine compartment is sealed in some way that creates an air bubble if u do a water crossing. idk if that is true or not…

 

[Deleted member 59498]

Simple hood hinge extensions along with pulling the under hood sound liner and engine cover allow heat to rise naturally un-impeded. It works driving or parked and don't let folks's speculations dissuade.

there is no downside, forum follows function. haha, however many unknowing will ask, what happened to your hood.

Now if you can make it retractable and extendable with a button would be a seller!

 

[Fast-n-Furious]

My 2022 392 has the same big honeycomb grill along with the hood scoop for cold air intake. I still see a lot times/very common with a bit higher temps as shown. Also wondering how useful the side vents are for heat extraction purpose.

 

[roaniecowpony]

Not quite sure what you mean. Maybe the Willys & Sport grilles don't have those?
I just simply removed the three honeycomb grille panels, and swapped in the JT style.

My grill has these...

 

[Wrangler man]

i believe @Wrangler man may have recently upgraded to vented inner front fender liners; i'm curious to hear what he might have observed since then in his high-heat environment,..

i believe @Wrangler man may have recently upgraded to vented inner front fender liners; i'm curious to hear what he might have observed since then in his high-heat environment,..

I did replace my plastic inner liners with metal ones. The main and only reason I did this is: Installed High Line Bushwacker Fenders. Powder coated and moderately vented. I did not want full venting in oder to prevent excessive dirt/water entering my engine bay. It's my belief metal conducts heat faster quicker which should result in cooling faster, between the metal and the partially vented liners, I May have noticed slightly lower oil and cooling temperatures. The science and the facts cannot be stated or shown here since I did not do a good comparison test before and after.
"Does plastic block heat?"
"Plastics are excellent insulators, meaning they can efficiently trap heat"
Have read forums where Wrangler owners (I believe 392) have experienced melted plastic inner liners which Mopar honored and replaced at the owner's request.
Stay tuned:
The Mishimoto aluminum radiator and transmission cooler have been installed. noticeable 6° operating temperatures around town so far. Consistent temperatures over 110° every summer here. Never once have I had an issue of excessive heat issues (oil or cooling) due to the very effective auxiliary OEM electric fan. Will be taking it on the highway soon where the high temperatures have always been problematic. I will share my results soon. There are so many variables, I will be sharing only general, non-scientifically proven results if any. Being a 2020 JLUAD I have the small honeycomb inserts which some say are the most constrictive and also the metal oem bumper with the Warn winch. Neither of which I think have been problematic in this heat issue so far. The late model 21 and all models 22 thereafter came with the large honeycomb grill inserts on all diesels. They were standard on the Gladiator it's my belief they just used them on the diesel Wranglers as a possible way to improve the already known heat issue.

i believe @Wrangler man may have recently upgraded to vented inner front fender liners; i'm curious to hear what he might have observed since then in his high-heat environment,..

 

[Wrangler man]

My grill has these...

3.6 do not have heat issues. Irrelevant.

 

[Wrangler man]

Simple hood hinge extensions along with pulling the under hood sound liner and engine cover allow heat to rise naturally un-impeded. It works driving or parked and don't let folks's speculations dissuade.

there is no downside, forum follows function. haha, however many unknowing will ask, what happened to your hood.

I'd be very interested to know what temps occurred when and if you had the hood completely off, and then after your modification? Significant numbers either way then you're definitely on to something.

 

[Wrangler man]

Some folks as in myself included, report the 3.6 cooling fan "jet engine syndrome" has completely stopped with optional venting.

Not on my diesel. A matter of fact because I'm paying so close attention to numbers and sounds as soon as I fire up the diesel Wrangler sitting in a closed garage with the temperatures exceeding 100° within 30 seconds I hear that auxiliary fan kick on. Because the engine was completely shut down for more than 24 hours not even a chance to begin to warm up to normal operating temperatures. The fan must have an ambient temp sensor that kicks it on automaticly. It stays on every time come to an idle or slow wheeling.

 

[Oilburner]

Simple hood hinge extensions along with pulling the under hood sound liner and engine cover allow heat to rise naturally un-impeded. It works driving or parked and don't let folks's speculations dissuade.

there is no downside, forum follows function. haha, however many unknowing will ask, what happened to your hood.

You have basically made a cowl-induction hood, air pressure builds up at the base of the windshield forcing air down. When the vehicle stops, it becomes a vent which lets more air out. No defense against rain intrusion.

 

[Wrangler man]

hot and cooler.

The two NON diesel owners were amused with your reply? One even gave you hearts?

 

[Wrangler man]

You have basically made a cowl-induction hood, air pressure builds up at the base of the windshield forcing air down. When the vehicle stops, it becomes a vent which lets more air out. No defense against rain intrusion.

I just realized you're not a diesel owner? I assumed you were because you're on the diesel forum. Why would you butcher and modify your Jeep like that? There are no heat issues. The only heat issues I know relatively close to the ones us diesel owners experience would be the 392.

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