Any chance this would provide cooling for the engine in general? I dont have a turbo but any amount of temp savings, I am in.Here are a few of mine with a Subaru scoop... it provides air for my intercooler..
Hood scoops (1 Viewer)
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SmokingRocks
hopelessly addicted to Cruisers
I honestly don't think any hood scoops do anything to impact the actual temp of the engine. If you have a turbo under the hood then I can see vents helping, but scoops? ehhh
ya it will, I would suggest wrapping your exhaust with insulation till just behind the firewall too
Vents are more effective for shedding heat. Hood skewps are best when you want to passively draw cooler air into the intake system.
Thank you. Thats helpful. Would something like a vent work on a hood to shed heat? I have seen a guy on YouTube add vents and he has not quantified how it has effected the engine Temps but only said that he "feels" like its helped. I have the Ultragauge but I am not sure that would register a change in temp as it probably comes from the thermostat.
Search Chevy Z34 hood vent FZJ80 on a Google. It will reroute you to threads on here.
There is a company out there that makes bolt on vents that work on these trucks.
There is a company out there that makes bolt on vents that work on these trucks.
Box Rocket
SILVER Star
I've had a hood scoop for a couple years now. A scoop on it's own won't do much to help with actual engine temps. It will give a minor improvement in engine compartment temps but that really doesn't translate to a drop in coolant temps.
But, combining a scoop with vents (or using just vents) will be a better choice for trying to improve coolant temp. Reducing the engine compartment temps can help to lower coolant temps but a scoop (from my experience) won't be adequate to make it beneficial.
I don't have scientific data for what the temperature drop is in my engine compartment with the scoop AND vents but this summer driving on the highway I can see the heat distortion coming from the hood vents. And I've seen an actual drop in coolant temps. For the past few years in 90-100* heat that is common here in Utah summers my coolant temps have been pretty consistently 199-210*. I don't like running the truck any hotter than 210* so when it would get that warm I would turn off the AC, open windows and turn on the heater to get the temps back down. That was usually only climbing some of the canyon highways, but occasionally even around town.
Since adding the vents my temps this summer have been consistently 185-199* and the hottest it has ever been this summer so far was 205* while climbing Parley's canyon at 75mph while pulling my trailer in 101* ambient temp outside. That is a noticeable difference.
My theory is that the scoop is bringing air into the engine compartment and increasing the air pressure and help push the hot air out through the vents. The typical location of hood vents on 80s is a low pressure area for airflow so that also helps to draw air out.
If you don't want to do both a scoop and vents, I would suggest doing vents over doing a scoop. The vents have shown to be more beneficial.
IMG_4974 by Adam Tolman, on Flickr
Dude, thank you so much for that detailed response. I really appreciate your time. Would you mind telling me the specific vents you have in this photo? It looks great and I can't imagine they would not have an effect on the temperature of the engine compartment. And now I am definitely painting my grill and Headlight liners black.I've had a hood scoop for a couple years now. A scoop on it's own won't do much to help with actual engine temps. It will give a minor improvement in engine compartment temps but that really doesn't translate to a drop in coolant temps.
But, combining a scoop with vents (or using just vents) will be a better choice for trying to improve coolant temp. Reducing the engine compartment temps can help to lower coolant temps but a scoop (from my experience) won't be adequate to make it beneficial.
I don't have scientific data for what the temperature drop is in my engine compartment with the scoop AND vents but this summer driving on the highway I can see the heat distortion coming from the hood vents. And I've seen an actual drop in coolant temps. For the past few years in 90-100* heat that is common here in Utah summers my coolant temps have been pretty consistently 199-210*. I don't like running the truck any hotter than 210* so when it would get that warm I would turn off the AC, open windows and turn on the heater to get the temps back down. That was usually only climbing some of the canyon highways, but occasionally even around town.
Since adding the vents my temps this summer have been consistently 185-199* and the hottest it has ever been this summer so far was 205* while climbing Parley's canyon at 75mph while pulling my trailer in 101* ambient temp outside. That is a noticeable difference.
My theory is that the scoop is bringing air into the engine compartment and increasing the air pressure and help push the hot air out through the vents. The typical location of hood vents on 80s is a low pressure area for airflow so that also helps to draw air out.
If you don't want to do both a scoop and vents, I would suggest doing vents over doing a scoop. The vents have shown to be more beneficial.
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I went the vent route and it definitely made a difference:
Nice! Do you have a link to the provider of those vents? Thanks for the response
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Toyota FJ80 Landcruiser Hood Louvers
These Toyota FJ80 Landcruiser hood vent heat extractors have been designed using race car technology to help improve your Toyota FJ80 Landcruiser cooling and looks. By installing these Toyota FJ80 Landcruiser hood louvers, you will improve your FJ80
i have ford mustang scoop venting towards windshield and it did make big difference in engine temperature ( i have LS 5.3 swap)
so some hot air goes down and some goes up through the scoope
if you have lift kit air will hit front differential and bounce back under the hood and keep hot air in engine bay but with the scoop facing backward it is another escape route for hot air
so some hot air goes down and some goes up through the scoope
if you have lift kit air will hit front differential and bounce back under the hood and keep hot air in engine bay but with the scoop facing backward it is another escape route for hot air
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Yeah, I can put my hand over the windshield while driving and feel the stream of hot air.
Very excited about this. I have done everything can to cool my engine and this will help even more. With the blue fan clutch, new Radiator, new water pump, new belts...all of it...I have an average running temp of 185 at cruising speeds. I just don't like the spikes in temp when I park on a hot day. Thanks again for the link. I think I'll go vents
move your horn somewhere else and install Suzuki vitara electrical fan and i used volvo 850 relayVery excited about this. I have done everything can to cool my engine and this will help even more. With the blue fan clutch, new Radiator, new water pump, new belts...all of it...I have an average running temp of 185 at cruising speeds. I just don't like the spikes in temp when I park on a hot day. Thanks again for the link. I think I'll go vents
you can idle all day and a/c is cold
You know what, that's a great idea and I actually for
very helpful.
Thats a great idea. Totally forgot I could ad a fan for idling! Thanks for the response
very helpful.
Any chance you have a more detailed writeup of those mod?
@Box Rocket I too am interested in those vents and the scoop. Is it a full hood replacement or add-on?
Info in a build thread?
Info in a build thread?
Box Rocket
SILVER Star
The scoop I'm using is the same one that @goranvolvo used (early 2000's Mustang) but mine's not backwards.
It did take a little shaping of the bottom edge to get it sit flush on the 80 hood.The vents I'm using are reproduction versions of Range Rover Sport fender vents.
Hood vinyl by Adam Tolman, on Flickr
How did any 80 series ever live beyond 500k miles without holes in the hood? Seriously
