I got an 07 JK 2dr with the old 3.8 but those catalytic converters heat up the engine bay stupid hot. I trimmed the fender liners, dropped the thermostat down to 180 F, and the best thing of all so far-Added a thermostatic switch and relay to cycle the low speed fan on when temps get high and it seems to make the most difference after a hot soak. Example-Go into the grocery store on a 95 plus day and come back out in 15-30 minutes and the fan cycles on a few times to evacuate a lot of the heat in that small engine compartment. I'll be doing a clutch in 20Kish miles and those cats will be taken care of so as not to have to worry about that heat source anymore. I might try a hood vent but am kind of concerned about rain water getting on electrical stuff like the TIPM, etc. Thanks for the review.
I absolutely love my Poison Spyder hood louver. You pretty much hit the nail right on the head with everything. I personally didn’t leave that internal X brace on the underside of the hood, I cut right through that too. I feel like it just opens it up a tad more. But that’s neither here nor there. Nice quality simple video. Keep it up!
As always…thanks for the support! I have never seen someone remove the x brace. Not a bad idea! Pretty cool. Tbh o just never thought about doing that.
I installed two hood vents in my 2000 Jeep Cherokee sport. I've noticed since I've added an auxiliary fan, it never gets out over 210. That 4.0 is awesome except for long waits in the drive thru on a warm day.
That’s great! The 4.0 is definitely a good motor. Tbh, so is the 3.6. It’s been great. And they don’t typically run too hot. The gauge and Mopar say it’s normal…but seeing 235° on the dash isn’t something that makes people feel comfortable! 😂
I want to complement you on your honesty and accuracy on two accounts: 1. The Hood Vent, as you said, will not have any affect on lowering the coolant/engine temp. But, as you mentioned, it does a great job of allowing all that excessive heat to escape from the engine compartment, thus increasing the life of all the other engine components, wiring and hoses....plus, it does look very BAD ASS! 2. Also, like you, I swapped out the stock thermostat, which, once again resulted in the same results as yours: took longer to heat up, but it never lowered the operating temp of the engine over the stock thermostat, on very hot days. Very disappointing....but it got worse! I lost 3-4 miles per gallon. Why? Because on cooler days, it stayed at about 200 degrees, which the engine management system viewed as cold, so it stayed in run rich mode. So guys, don't be tempted to make this conversation, it's not going to help, only hurt. The one thing I did, that did make a small difference, was converting to the plastic K+N intake, which I further modified by wrapping it with that silver bubble wrap insulation you can find at Home Depot. I have a Super Chip engine monitor, so I can see what the intake air temp is. Following the described changes, the intake air charge temp dropped by10 to 20 degrees, depending on ambient air temperature and vehicle speed, vs the stock set-up. So now, my normal operating temp is at 210 degrees, except for full throttle or long up-hill runs....which, bugs the Hell out of me! Jeep, you need to do better; I expect better from the Beast we call "Jeep." I'm thinking about going to an engine tuner, to see if bringing the fan on sooner and faster can correct this shortcoming. And? Another, don't bother conversion idea: a 2 or 3 row radiator. I tried that too. Didn't help. Stayed with the 2 row, as that was my most recent conversion. Can't say it's any better than a single row. Now, a double pass radiator might be our answer, but I was too chicken to try it, as I was concerned about fitment issues. These radiators are a universal design, leaving it up to you to make it fit. I was already at the point of frustration, and didn't want to tempt fate at this point. Do? Think about Silicone radiator hoses, as they can take the punishment. I expect them to out-last conventional hoses 2:1. Think about it if you do lots of desert trails, miles away from civilization. Side note: Got any Buddies who drive Toyota "FJ's?" Ask them what FJ stands for. Great question at the end of a hot desert day, relaxing with a cold one, next to the campfire. They won't know. But you do. It stands for "Fake Jeep!" Your relaxing, bonding time with your Buddies, just went to Hell. Sorry about that. The truth hurts sometimes. Do you think this was a Freudian slip on the part of Toyota, realizing that they couldn't match the history and toughness of a Jeep? Sorry; I love my Jeep, and I don't think there's anything better....guess it shows.
Thanks for the support. If you care to dive into it, you can use some of the programmers that are out there to actually change when the fan kicks on. I know people that have done that and had great results.
I like my Poison Spyder louver also. Just a tip, it’s easier to install if you take the hood off the Jeep. I put my hood on saw horses when I installed it.
Yea. I have seen that too. But tbh it was super easy to do with the hood on the jeep. Might be because I’m tall. But it was super easy. And I didn’t have to deal with removing and reinstalling the hood. That it’s difficult to do…but not having to do it saved me time for sure.
yep, too many folks think a louver hood will help cool the engine itself. I've had my Poison Spyder hood louver for over a year and have not installed it yet lol. Guess I need to get busy.
@@WarPaintOffroad I am going to install mine purely for looks and hope it does something to reduce engine bay temps. I've noticed on my 2015 JKU if I get it good and hot on some slow trails and I stall it (manual trans) it doesn't restart very well like it's trying to vapor lock, so maybe the louver will help.
If you program your engine fans to turn on at a lower temp with your lower temp thermostat jt will hold a lower temp. Just lower the thermostat temp won't do anything. You hVe to program the radiator fan as well. Which you can do with a diablosport tuner.
Heck yea you can. And that’s exactly why I made this video. But another thing you can do is put the winch lower between the frame rails so that it allows the air to flow through the radiator. I’m just making this video for the masses of people that think your jeep will run cooler with a lower thermostat or a hood vent.
I live in Texas. It’s super hot in the summer and I rock crawl it all the time. It doesn’t run any cooler with the hood vent. The engine temps are EXACTLY the same as they always were. If you have a jk or a JL with an electric radiator fan and a cooling system that is working as it should…it won’t run any cooler.
Does the powdercoat have any issue besides fading? If I end up going this route for mine, I may paint over the powder prior to installation. Surely a matte black automotive paint would last longer than the factory finish.
Hey! Thanks Scott! So in the cab I don’t have any issues. I run air conditioning, almost all year because it’s so hot where I live. But the days when I do need heat, it works well. But as far as heat coming through the firewall, I haven’t noticed. With that said, it would have to be cooler. I can see the heat leaving from under the hood when it’s idling.
If you have the 3.6 it is not unusual. Especially with bigger tires and heavier bumpers etc. it should run warmer than the typical older engines. Above 230 on hills at highway speed for short periods of time is okay. But it it’s hitting that temp at lower speeds and without much stress then you have a problem.
great video yeah I can't stand the watching a person unwrap a product and the say oh I love it it's better than the rest and works great after one day of use
Nascar runs engines with thermostats that are 220 and up. Heat in the engine actually helps it to last longer, cooler thermostats generally are for performance. so Heat is bad for your engine is not exactly accurate, obviously way too much heat is bad. What about rain and carwashes, that water coming in? The benefit to the louvred hood would be coolness factor of its looks. Also if your rock crawling in the desert heat at 1 mph, it would help. It may also help if you were in a snow area in a white out as that heat would be blowing at the windshield maybe helping to melt some snow or ice of the glass.
Yup. And I didn’t mean it was bad for the engine. What I meant is that it is the enemy of horsepower and bakes all the wiring and such. Heat at the windshield is accurate. But if the engine ran at 190 or 230….it’s still going to melt snow. 😂
@@WarPaintOffroad Glad that's what you meant. Them engineers are pretty smart. They probably thought about the heat under the hood. If they needed louvers, I bet they would have put them on there. Probably considered the heat under the hood. And it's called a template not a stencil.. Sorry I even commented. Funny how every one makes vids about the same things. Putting accessories on their rig because someone selling accessories convinces them they need it. They always include some supposed additional benefit. Like heat is the enemy of horse power, I think that's true but in your case the enemy of horse power is the computer on the vehicle. it's factory setup. You changing the thermostat did not give you 2 horse power, you cutting a giant hole in the hood gave you zero horse power. Until you show me an Automotive engineers certificate, just keep making vids about you spending money on things that look cool, but are not really needed. You fell for the hype of UA-cam, now your a peddler of the hype...Yup.. lol
@@johnkemple yea and no. It was never designed to run the tires and added weight that many of us are off-roading. They also never designed them to last much longer than the warranty. So taking the excess stress off the harness and other components is crucial. The main reason these were designed this was was for emissions. That doesn’t help us with longevity. I also think it’s funny that you mention nascar engines and their thermostats. If you actually knew about vehicles and engines you’d also know that they don’t run thermostats in nascar. And yes, they run extremely hot, but they do that only to reduce “cooling drag” from cooler air moving around under the hood and slowing them down. Did you know they also run just water in their engines? They stop the water from boiling off at the high temps by running the cooling system at higher pressures (because water’s boiling point increases with pressure). But again, everything you mentioned has absolutely nothing to do with a jeep. It’s also funny that people like you take the time to comment and try to come off like you are preaching to the internet. But whatever makes it easier for you to sleep. 👍🏻
@@WarPaintOffroad wow.. lol..your funny you are the one preaching to the internet. I don't have a channel bud.. lol I did not realize you were a jeep specialist. I apologize to you and all your fans. don't worry I wont ever look at your site again. nor make any comments. Not sure why UA-cam put you in front of me in the first place..Again i will just let you explain to us about all things jeep. Forgive me oh wise one...you may have your channel back now sorry, begging forgiveness.
@@johnkemple I'm on my first Jeep, but far from a stranger to the automotive repair and modification world. Looks like you got exactly the response you deserved, here. You can't claim and argue incorrect statements and not expect to get called out for it.
The best thing you can do is to reprogram you computer to turn the fan on at a lower temperature that’s what I did my 2014 jk runs around 208-215 much better
I got an 07 JK 2dr with the old 3.8 but those catalytic converters heat up the engine bay stupid hot. I trimmed the fender liners, dropped the thermostat down to 180 F, and the best thing of all so far-Added a thermostatic switch and relay to cycle the low speed fan on when temps get high and it seems to make the most difference after a hot soak. Example-Go into the grocery store on a 95 plus day and come back out in 15-30 minutes and the fan cycles on a few times to evacuate a lot of the heat in that small engine compartment.
I'll be doing a clutch in 20Kish miles and those cats will be taken care of so as not to have to worry about that heat source anymore. I might try a hood vent but am kind of concerned about rain water getting on electrical stuff like the TIPM, etc.
Thanks for the review.
Yea! Those engines are cooled differently electronic wise than the later 3.6’s….heck even differently than the earlier 3.6’s. It that’s awesome.
I absolutely love my Poison Spyder hood louver. You pretty much hit the nail right on the head with everything. I personally didn’t leave that internal X brace on the underside of the hood, I cut right through that too. I feel like it just opens it up a tad more. But that’s neither here nor there. Nice quality simple video. Keep it up!
As always…thanks for the support! I have never seen someone remove the x brace. Not a bad idea! Pretty cool. Tbh o just never thought about doing that.
I installed two hood vents in my 2000 Jeep Cherokee sport. I've noticed since I've added an auxiliary fan, it never gets out over 210. That 4.0 is awesome except for long waits in the drive thru on a warm day.
That’s great! The 4.0 is definitely a good motor. Tbh, so is the 3.6. It’s been great. And they don’t typically run too hot. The gauge and Mopar say it’s normal…but seeing 235° on the dash isn’t something that makes people feel comfortable! 😂
That's why the gauge reading of normal, when in reality it's 235 degrees, is so dishonest! What's the expression? "Idiot" gauge?@@WarPaintOffroad
I want to complement you on your honesty and accuracy on two accounts: 1. The Hood Vent, as you said, will not have any affect on lowering the coolant/engine temp. But, as you mentioned, it does a great job of allowing all that excessive heat to escape from the engine compartment, thus increasing the life of all the other engine components, wiring and hoses....plus, it does look very BAD ASS!
2. Also, like you, I swapped out the stock thermostat, which, once again resulted in the same results as yours: took longer to heat up, but it never lowered the operating temp of the engine over the stock thermostat, on very hot days. Very disappointing....but it got worse! I lost 3-4 miles per gallon. Why? Because on cooler days, it stayed at about 200 degrees, which the engine management system viewed as cold, so it stayed in run rich mode. So guys, don't be tempted to make this conversation, it's not going to help, only hurt.
The one thing I did, that did make a small difference, was converting to the plastic K+N intake, which I further modified by wrapping it with that silver bubble wrap insulation you can find at Home Depot. I have a Super Chip engine monitor, so I can see what the intake air temp is. Following the described changes, the intake air charge temp dropped by10 to 20 degrees, depending on ambient air temperature and vehicle speed, vs the stock set-up.
So now, my normal operating temp is at 210 degrees, except for full throttle or long up-hill runs....which, bugs the Hell out of me! Jeep, you need to do better; I expect better from the Beast we call "Jeep."
I'm thinking about going to an engine tuner, to see if bringing the fan on sooner and faster can correct this shortcoming.
And? Another, don't bother conversion idea: a 2 or 3 row radiator. I tried that too. Didn't help. Stayed with the 2 row, as that was my most recent conversion. Can't say it's any better than a single row. Now, a double pass radiator might be our answer, but I was too chicken to try it, as I was concerned about fitment issues. These radiators are a universal design, leaving it up to you to make it fit. I was already at the point of frustration, and didn't want to tempt fate at this point.
Do? Think about Silicone radiator hoses, as they can take the punishment. I expect them to out-last conventional hoses 2:1. Think about it if you do lots of desert trails, miles away from civilization.
Side note: Got any Buddies who drive Toyota "FJ's?" Ask them what FJ stands for. Great question at the end of a hot desert day, relaxing with a cold one, next to the campfire. They won't know. But you do. It stands for "Fake Jeep!" Your relaxing, bonding time with your Buddies, just went to Hell. Sorry about that. The truth hurts sometimes.
Do you think this was a Freudian slip on the part of Toyota, realizing that they couldn't match the history and toughness of a Jeep?
Sorry; I love my Jeep, and I don't think there's anything better....guess it shows.
Thanks for the support. If you care to dive into it, you can use some of the programmers that are out there to actually change when the fan kicks on. I know people that have done that and had great results.
Thanks for that input. Any programmer in the Los Angeles area you can recommend?@@WarPaintOffroad
Hyline offroad hood louvre… Its my fav mod for my JK. Hasn’t faded at all.
That’s awesome. I was disappointed that this one faded like it did. I expected better. But I’ll paint it eventually. Oh well.
I like my Poison Spyder louver also. Just a tip, it’s easier to install if you take the hood off the Jeep. I put my hood on saw horses when I installed it.
Yea. I have seen that too. But tbh it was super easy to do with the hood on the jeep. Might be because I’m tall. But it was super easy. And I didn’t have to deal with removing and reinstalling the hood. That it’s difficult to do…but not having to do it saved me time for sure.
@@WarPaintOffroad short Jeeper problems here
@@moggiethejeep1828 you aren’t alone!
yep, too many folks think a louver hood will help cool the engine itself. I've had my Poison Spyder hood louver for over a year and have not installed it yet lol. Guess I need to get busy.
It lets a lot of heat out. It probably helped lower intake temps. But I didn’t measure them before. So I don’t have the “before” data to compare to.
@@WarPaintOffroad I am going to install mine purely for looks and hope it does something to reduce engine bay temps. I've noticed on my 2015 JKU if I get it good and hot on some slow trails and I stall it (manual trans) it doesn't restart very well like it's trying to vapor lock, so maybe the louver will help.
@@Georgia4Low I would bet that it will definitely help!
If you program your engine fans to turn on at a lower temp with your lower temp thermostat jt will hold a lower temp. Just lower the thermostat temp won't do anything. You hVe to program the radiator fan as well. Which you can do with a diablosport tuner.
Heck yea you can. And that’s exactly why I made this video. But another thing you can do is put the winch lower between the frame rails so that it allows the air to flow through the radiator. I’m just making this video for the masses of people that think your jeep will run cooler with a lower thermostat or a hood vent.
I would say that it will not help it run cooler but it will help it from overheating in given situations (like rock crawling on hot day)
I live in Texas. It’s super hot in the summer and I rock crawl it all the time. It doesn’t run any cooler with the hood vent. The engine temps are EXACTLY the same as they always were. If you have a jk or a JL with an electric radiator fan and a cooling system that is working as it should…it won’t run any cooler.
Does the powdercoat have any issue besides fading? If I end up going this route for mine, I may paint over the powder prior to installation. Surely a matte black automotive paint would last longer than the factory finish.
Not at all. It’s a super quality powder coating. It’s not like the cheap Chinese bumpers that crack and peel. It just fades.
Hey Dan, love the channel! Did you notice a reduction in heat in the cab area? Mine feels like a furnace in stock form!
Hey! Thanks Scott! So in the cab I don’t have any issues. I run air conditioning, almost all year because it’s so hot where I live. But the days when I do need heat, it works well. But as far as heat coming through the firewall, I haven’t noticed. With that said, it would have to be cooler. I can see the heat leaving from under the hood when it’s idling.
I wonder if this hood louver could cause Alternator issues with water falling into it during stop-and-go traffic during heavy rain ? 🤔
Great video vary informative
Dear God thank you for your review I was tired of just seeing install video's only
Thanks for the support! I’m happy it helped! I don’t know why people don’t film reviews of these.
So you’re saying my coolant temp at 220-230 is pretty normal in the jk?
If you have the 3.6 it is not unusual. Especially with bigger tires and heavier bumpers etc. it should run warmer than the typical older engines. Above 230 on hills at highway speed for short periods of time is okay. But it it’s hitting that temp at lower speeds and without much stress then you have a problem.
@@WarPaintOffroad ♥️ much appreciated
Any issues with rain when the car is parked?
Non e at all. Sometimes it might get slightly wet if it’s a VERY heavy rain. But not wet enough to hurt anything. It’s never been a problem.
@@WarPaintOffroad thank you 🙏🏻
Why not just using floor vents at a fraction of the cost
Great video!!
Thanks for the support!
great video yeah I can't stand the watching a person unwrap a product and the say oh I love it it's better than the rest and works great after one day of use
Thanks for the support! I completely agree. It happens too often.
My 93 grand Cherokee also gets hot to
Thanks made my choice easier .
Great! I’m glad!
Nascar runs engines with thermostats that are 220 and up. Heat in the engine actually helps it to last longer, cooler thermostats generally are for performance. so Heat is bad for your engine is not exactly accurate, obviously way too much heat is bad. What about rain and carwashes, that water coming in? The benefit to the louvred hood would be coolness factor of its looks. Also if your rock crawling in the desert heat at 1 mph, it would help. It may also help if you were in a snow area in a white out as that heat would be blowing at the windshield maybe helping to melt some snow or ice of the glass.
Yup. And I didn’t mean it was bad for the engine. What I meant is that it is the enemy of horsepower and bakes all the wiring and such. Heat at the windshield is accurate. But if the engine ran at 190 or 230….it’s still going to melt snow. 😂
@@WarPaintOffroad Glad that's what you meant. Them engineers are pretty smart. They probably thought about the heat under the hood. If they needed louvers, I bet they would have put them on there. Probably considered the heat under the hood. And it's called a template not a stencil.. Sorry I even commented. Funny how every one makes vids about the same things. Putting accessories on their rig because someone selling accessories convinces them they need it. They always include some supposed additional benefit. Like heat is the enemy of horse power, I think that's true but in your case the enemy of horse power is the computer on the vehicle. it's factory setup. You changing the thermostat did not give you 2 horse power, you cutting a giant hole in the hood gave you zero horse power. Until you show me an Automotive engineers certificate, just keep making vids about you spending money on things that look cool, but are not really needed. You fell for the hype of UA-cam, now your a peddler of the hype...Yup.. lol
@@johnkemple yea and no. It was never designed to run the tires and added weight that many of us are off-roading. They also never designed them to last much longer than the warranty. So taking the excess stress off the harness and other components is crucial. The main reason these were designed this was was for emissions. That doesn’t help us with longevity. I also think it’s funny that you mention nascar engines and their thermostats. If you actually knew about vehicles and engines you’d also know that they don’t run thermostats in nascar. And yes, they run extremely hot, but they do that only to reduce “cooling drag” from cooler air moving around under the hood and slowing them down. Did you know they also run just water in their engines? They stop the water from boiling off at the high temps by running the cooling system at higher pressures (because water’s boiling point increases with pressure). But again, everything you mentioned has absolutely nothing to do with a jeep.
It’s also funny that people like you take the time to comment and try to come off like you are preaching to the internet. But whatever makes it easier for you to sleep. 👍🏻
@@WarPaintOffroad wow.. lol..your funny you are the one preaching to the internet. I don't have a channel bud.. lol I did not realize you were a jeep specialist. I apologize to you and all your fans. don't worry I wont ever look at your site again. nor make any comments. Not sure why UA-cam put you in front of me in the first place..Again i will just let you explain to us about all things jeep. Forgive me oh wise one...you may have your channel back now
sorry, begging forgiveness.
@@johnkemple I'm on my first Jeep, but far from a stranger to the automotive repair and modification world. Looks like you got exactly the response you deserved, here. You can't claim and argue incorrect statements and not expect to get called out for it.
would totally suck in snow country
The best thing you can do is to reprogram you computer to turn the fan on at a lower temperature that’s what I did my 2014 jk runs around 208-215 much better
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