Side Vents ? anybody ?

[turbocruiser]

On the topic of side vents and hood vents, they will do very little in the way of reducing under hood temperatures or nothing at all on an 80 series. if you get really crazy with duct work and vent/flap angles and things of that nature, it could help a little, but probably not worth the effort.

Again, not at all accurate. There are lots and lots of threads on this already with pretty scientifically presented data. Search will show the way. I don't mean this the wrong way, but while the energy and enthusiasm you have here is great, you can't just jump conclusions; the intent is to help one another and we don't do that with misinformation.

 

[NKP Garage]

Again, not at all accurate. There are lots and lots of threads on this already with pretty scientifically presented data. Search will show the way. I don't mean this the wrong way, but while the energy and enthusiasm you have here is great, you can't just jump conclusions; the intent is to help one another and we don't do that with misinformation.

Sorry to offend anyone. My statements are not meant as concrete end-all proof. Simply stating my opinion on certain modifictions.

Let me re-state...

Vents in the hood may reduce temperatures SLIGHTLY. Will it make a performance difference on 80 series? More than likely not. Will it lead to cooler intake temperatures? Probably not. Then what is the benefit? Not much IM MY OPINION, to justify the work.

Will an A2A intercooler mounted on top of the motor, and under the hood in one of the hottest possible parts of the engine compartment lead to cooler intake temperatures? Sure, it will, a little. Will doing an A2W in the same spot or an A2A in a better location lead to exponentially greater gains from lower intake temperatures? Yes, definitely.

And with the spark plugs from your other thread. I've dealt with all sorts of various plugs on turbo charged applications, and I can tell you that although copper plugs are popular, properly chosen iridium plugs will perform simlarly and last many many times longer. Personally, I don't see the reason to switch spark plugs at every oil change simply due to the fact that copper is a better conductor, unless you have some serious proof. On another note regarding spark plugs, have you ever seen a copper plug with a melted head after installing upgraded ignition components? Yup, it happens more often than you think. Have you ever noticed that sometimes when you remove your copper plugs they are at a LARGER gap than when you installed them? Yup, it happens. Again, all opinions, based on experience, I'm not simply on here blowing smoke.

 

[turbocruiser]

Oh, I hate to do it. . .


ABC's of Cooling. . .

Ahaa, that was beyond big of you Boyd! I think the link was chopped though as it isn't working with my browser. Try this one.

https://forum.ih8mud.com/80-series-tech/105788-abcs-80s-cooling-part-iv-hood-vents.html

 

[Tapage]

We can definitely do something. I'll tell you this though, a top mounted air to air intercooler on a vehicle like this is not going to perform well at all and will not be worth the effort.

why not with a good hood scoop and electric fan under it .. or at least in a Turbo Diesel 80 ..

 

[turbocruiser]

Sorry to offend anyone. My statements are not meant as concrete end-all proof. Simply stating my opinion on certain modifictions.

Let me re-state...

Vents in the hood may reduce temperatures SLIGHTLY. Will it make a performance difference on 80 series? More than likely not. Will it lead to cooler intake temperatures? Probably not. Then what is the benefit? Not much IM MY OPINION, to justify the work.

Will an A2A intercooler mounted on top of the motor, and under the hood in one of the hottest possible parts of the engine compartment lead to cooler intake temperatures? Sure, it will, a little. Will doing an A2W in the same spot or an A2A in a better location lead to exponentially greater gains from lower intake temperatures? Yes, definitely.

And with the spark plugs from your other thread. I've dealt with all sorts of various plugs on turbo charged applications, and I can tell you that although copper plugs are popular, properly chosen iridium plugs will perform simlarly and last many many times longer. Personally, I don't see the reason to switch spark plugs at every oil change simply due to the fact that copper is a better conductor, unless you have some serious proof. On another note regarding spark plugs, have you ever seen a copper plug with a melted head after installing upgraded ignition components? Yup, it happens more often than you think. Have you ever noticed that sometimes when you remove your copper plugs they are at a LARGER gap than when you installed them? Yup, it happens. Again, all opinions, based on experience, I'm not simply on here blowing smoke.

No worries whatsoever with offending me man, you did not do that; I'm just saying and stressing that presenting things as "matter of factly" as you sometimes seem to do when those "matters of fact" are wrong, doesn't do anyone any good and you've presented several specific matters of fact very "matter of factly" which were wrong, that's all. Sorry if I offended you. I gotta scoot for a few seconds but I'm happy to continue the conversations here later.

 

[NKP Garage]

why not with a good hood scoop and electric fan under it .. or at least in a Turbo Diesel 80 ..

Don't get me wrong, it will be better than no intercooler at all. But it will soak up a lot of rising heat from the engine. The better option would be to locate an A2A intercooler somewhere else, or go with an A2W setup if you must put it above the motor.

 

[NKP Garage]

No worries whatsoever with offending me man, you did not do that; I'm just saying and stressing that presenting things as "matter of factly" as you sometimes seem to do when those "matters of fact" are wrong, doesn't do anyone any good and you've presented several specific matters of fact very "matter of factly" which were wrong, that's all. Sorry if I offended you. I gotta scoot for a few seconds but I'm happy to continue the conversations here later.

No offense taken. And noted on the "matterof factly" posts I'll try to elaborate on the reasoning from now on so I don't seem like such an a$$ of a newb

 

[turbocruiser]

No offense taken. And noted on the "matterof factly" posts I'll try to elaborate on the reasoning from now on so I don't seem like such an a$$ of a newb

Gosh, I hope I didn't allude to that either! You're no ass at all as I see it and I hope I'm not acting as one either! If so my sincere apologies.

 

[NKP Garage]

Gosh, I hope I didn't allude to that either! You're no ass at all as I see it and I hope I'm not acting as one either! If so my sincere apologies.

Not at all. I was just trying to be funny. I guess the big cheek to cheek smile on my face while I was typing didn't really come across in the post. On to the topic at hand. I'll stop hijacking the thread so hzavarce can get his answers

 

[Brian894X4]

I have nothing against cutting holes and putting in vents if anyone wants too, but if the Land Cruiser is not cooling properly, I would spend the time and money to fix the actual problem first.

From my personal experience "normal" operating tempature is 181 degrees. I've seen as low as 179 in the winter. I'm guessing the stock thermostate is set to fully open at 180 degress, which is probably why that is the normal base temp. Various conditions will make it up go up from there. High load, low speed driver, high ambient temps, towing, etc. But in normal weather, driving normally, it really shouldn't be much higher than 180-185. If it is, there are other problems. Even under the extreme loads the factory cooling system is VERY well designed and more than adequate if properly maintained. I've never seen anywhere 220 degrees with a properly maintained cooling system. And my rig is 6700lbs and has all kinds of things blocking airflow to the radiator.

Don't get me wrong, I'm not knocking the vent idea at all. I would just make sure the maintainence bases are covered first. Then do the vent thing after that. Maybe do an auxilary fan first, which I've done (although the results are debatable.) If anyone is confused about why go the extra mile to keep the 1FZ engine bay cool, the number one reason is the headgasket issue. Especially for those of us who are still rolling around with the stock headgasket. Secondary issues are the engine harness wiring that have a history of getting baked and destroyed thanks to Toyota's after thought in design of the North American version of the 1FZ and it's EGR system, among other issues. The engine bay is fairly tight and the exhaust system does generate a ton of heat in there.

In short, the 1FZ has a well matched cooling system, but there are several issues (headgasket and EGR) that are somewhat unique to our North American 80s, that may need to be taken into consideration that got by the engineers. But I would do it in the order of, invest in keeping the cooling system in top shape, including new parts if necessary, add an electrical fan, then cut holes. The last two being debatable.

 

[Ebag333]

Secondary issues are the engine harness wiring that have a history of getting baked and destroyed thanks to Toyota's after thought in design of the North American version of the 1FZ and it's EGR system, among other issues. The engine bay is fairly tight and the exhaust system does generate a ton of heat in there.

There are better ways of dealing with the wiring harness and the EGR system.....like disabling it.

 

[SUMMIT CRUISERS]

Here's an idea a came up with for the fender vents (first 2 pics):

However; I decided on the hood vents (3rd pic). Here's the write up:

https://forum.ih8mud.com/80-series-tech/294227-grand-prix-gtp-hood-vents-installed.html

The hood vents definitely help cooling when climbing high altitude offroad trails. This year went to Colorado with a m416 trailer . Took it up some trails that I thought the truck could not go any more (on the floor, in low, barely moving and almost to a stand-still). Anyway, truck did not overheat. However; last year without a trailer on similar trails truck got hot. I'm sold on my hood vents for keeping the engine compartment and components cooler.

FYI, 92 truck with 296K, new radiator, blue fan clutch and 12" pusher fan to help in cooling also.

 

[BenMara]

just louver the hood

 

[Tapage]

Don't get me wrong, it will be better than no intercooler at all. But it will soak up a lot of rising heat from the engine. The better option would be to locate an A2A intercooler somewhere else, or go with an A2W setup if you must put it above the motor.

I agree the better place to run an A2A IC it's the front mounted .. but if there is no space, top mounted as many factory A2A come could not be that worse ..

 

[NKP Garage]

I agree the better place to run an A2A IC it's the front mounted .. but if there is no space, top mounted as many factory A2A come could not be that worse ..

I haven't taken the time to look, but I think there may be room for a sidemount if you get fancy with the mounting. There's also the option of doing A2W as a topmount which will suffer much less from heatsoak than a top mounted A2A.

 

[thisilldefend]

Ok just wondering. Doesnt the JDM electric fan cool things quite a bit? It is my understanding it bolts right on you just have to do the wiring. This was on my list for future mods, was planning on having a manual switch to flick it on when the temperature woulld get up there.

 

[Ebag333]

Ok just wondering. Doesnt the JDM electric fan cool things quite a bit? It is my understanding it bolts right on you just have to do the wiring. This was on my list for future mods, was planning on having a manual switch to flick it on when the temperature woulld get up there.

I'd actually fit a 14" fan in there instead of the JDM one. You'll move more air, and it'll be more effective.

It's primarily for low speed, it won't have much effect at highway speeds.

 

[thisilldefend]

I'd actually fit a 14" fan in there instead of the JDM one. You'll move more air, and it'll be more effective.

It's primarily for low speed, it won't have much effect at highway speeds.

I will look into a 14" when the time comes. I sure hope my 80 never over heats on the highway. I ran the dog doo out of my 89 v6 4runner on high desert higways with the AC on. I used to laugh when the signs said to turn your AC off and they had water barrels every so often on the side of the road.