The Purpose of the Hood Scoop

[manualcgt]

Me and my brother were talking about my car and we came across the question of the hood scoop. Does it serve any real purpose besides maybe blowing cool air into the engine bay.

Has anybody ever tried doing a CAI Mod using the hood scoop although im almost positive would would cause hydrolocking In heavy rain.

[5sfecelica]

It's mainly for cosmetics.

[QTRMLR_1]

On the stock hood, I think the scoop opening might be mostly blocked off. Is that true? I don't have my stock hood anymore.

On carbon fiber hoods, yeah you get a little air and more so if it's a raised hood scoop. It's mostly for aesthetics though.

There's not enough room under our hood to do a CAI setup. If you were to make a custom hood, the scoop would be huge and t'd be more like a SRI with an opening on the hood unless you made a custom air box. If you were to locate the scoop further down the front of the car, that changes the basic aesthetic design of the car. The question is will it look good to you and do you even care about looks.

No, I don't think you'd get hydrolocking in heavy rain if the intake opening is not facing the sky. Well maybe in rain from a Great Flood of biblical proportions. If you're worried about it, make a piece to block off the scoop.

A custom intake manifold with the throttle body opening facing toward the front of the car would be ideal. You'd have to get a custom hood for that and try to design for a ram air effect.

[Agnu]

helping CF hoods without pins break up towards your windshield =]

[Dasher17]

Has anybody ever tried doing a CAI Mod using the hood scoop although im almost positive would would cause hydrolocking In heavy rain.

The idea behind a cold air intake is getting cold air. Cold air is closer to the ground, warm air is high up so making a high point on the engine the intake spot would defeat the purpose.


As for it's really purpose, mostly ornament, supposedly it cools the engine down a little, but not enough to justify it's being there.

[trdmsprts27]

Its mainly cosmetic like 5sfcelica said and it supposidly also brings air in and down onto the header. IMO it really has no function at all. I thought about the intake idea with a raised hood scoop but it would not work. You would need a square filter style intake system and the pipe would be oval not round and maybe 2" tall (inside dia) then theres the keeping it stationary in that position once the hood is down and the possability of hydrolocking when it rains or if your dumb enough to drive through a giant sized puddle. you can try it yourself if you like theres always a first time for everything for getting an idea to work :D

[blkcelica01]

it doesn't do much unless the car is travelling 300+ mph

[manualcgt]

The idea behind a cold air intake is getting cold air. Cold air is closer to the ground, warm air is high up so making a high point on the engine the intake spot would defeat the purpose.

Although Im sure thats true, if somebody where to actually have that setup through the hood with a way to avoid getting water into the scoop on rainy days, ounce you get moving it would be just as good as having it on the bottom of the car. Not saying I would try it my self but its an interesting idea.

I know friends have taken out a head light on there intergras and stuck the filter in that space on race days

[QTRMLR_1]

The idea behind a cold air intake is getting cold air. Cold air is closer to the ground, warm air is high up so making a high point on the engine the intake spot would defeat the purpose.


No, once the car is in motion there's no difference between a CAI behind a big hood scoop and a CAI closer to the ground. Be sure to have the piping ceramic coated.

As I said before, you would ideally make a cold air box with the opening to the front of the air, and in that case you wouldn't be drawing any air from the engine bay.

[2way]

The hood scoop aids in preventing cylinder warpage and distortion on a transverse mounted engine where cool air is hitting one side of the engine and the other side is hot. It also helps airflow through the radiator/underpanel.

[blkcelica01]

The hood scoop aids in preventing cylinder warpage and distortion on a transverse mounted engine where cool air is hitting one side of the engine and the other side is hot. It also helps airflow through the radiator/underpanel.

you think you are so smart don't you

[JSPITZ]

teh hood scoop is functional..wtf are you guys talking about. do any of you have any idea what the hood scoop is for.

[SpikedCola]

you think you are so smart don't you
What is your problem, dude?

[Soo__Fuego]

To cool the header, which means a cooler engine bay, not engine, cooler engine bay means the rubber hoses wont dry as fast, elec wires and components wont fry, and since the header is by the firewall, it looks helps with the amount of heat transfered into the cabin

[bunkkaws84]

also if you poop the hood and look at the firewall, you will see an metal scoop the feeds air into the HVAC system located directly behind the hood scoop as well.

So my guess is, correctly when I am wrong, not only does it cool the engine, it is also where it draws air for your vents when you have the HVAC to outside air feed.

**** sorry I don't know any of the correct terminology here.

p.s. if you spray febreze into the metal scoop while you have the car set on outside air feed, you car will smell nice when you get it in. :thumbup:

[blkcelica01]

What is your problem, dude?

chill, I'm just playin dude

[GSBoek]

Wow, there are quite a few ignorant comments on here. In dutch they say: Onbelemmerd door kennis van zaken.

The scoop on the Celica IS functional, it was never intended to be cosmetic. That it looks good is a welcome byproduct of the function it serves, which is double:
Cooling air for the header and channeling airflow in the engine bay.

Most of you haven't been enough around your Celica engines, let alone other cars. Go have a look at pictures from the exhaust side of the Celica engines: Ever wondered why the head on the exhaust side has so many more little fins than on the intake side? It is to increase the effective cooling area cuz you know DING! DING! DING! the exhaust side gets so much hotter than the intake side and that is exactly what you want to minimize cuz if you don't you will get warpage. This ain't rocket science.

Here, read up, this has been discussed: http://www.newcelica.org/forums/showthread.php?t=23712&highlight=hood+scoop+functional

[marc]

To cool the header, which means a cooler engine bay, not engine, cooler engine bay means the rubber hoses wont dry as fast, elec wires and components wont fry, and since the header is by the firewall, it looks helps with the amount of heat transfered into the cabin

.

[marc]

also if you poop the hood and look at the firewall, you will see an metal scoop the feeds air into the HVAC system located directly behind the hood scoop as well.

So my guess is, correctly when I am wrong, not only does it cool the engine, it is also where it draws air for your vents when you have the HVAC to outside air feed.

**** sorry I don't know any of the correct terminology here.

p.s. if you spray febreze into the metal scoop while you have the car set on outside air feed, you car will smell nice when you get it in. :thumbup:

:wiggle:

[GSBoek]

^ :chuckles:

[sittinSidewayz]

chill, I'm just playin dude

LEAVE HIM ALONE

[manualcgt]

Alright then......this seems to be a pretty picky subject.

So final conclusion being nobody has ever tried using the hood scoop as a CAI

And that the hood scoop serves its purpose by circulating air through the engine bay.

[celicajonz]

to help cool down the xhaust manifold.

[bt216]

to help cool down the xhaust manifold.
+1

[lVlemphizStylez]

I'd stake 100 on the fact that if you removed the scoop measured the temp of the exhaust manifold then did it again with the scoop the difference would be immeasurable. It's an exhaust manifold people...that hood scoop isn't going to lower it significantly if at all. But hey ricers say whatever to justify bs

[PaLng_CeLca]

I would say it would help exhaust manifold at least a little. (better than nothing)
here's my question, so if we completely block off hood scoop, will it affect anything?
I think so.

[lVlemphizStylez]

try it...your exhaust manifold exceeds temps of a constant 150+ degrees F. If you honestly think the 90 degree humid breeze blowing over it is going to give you any performance benefit, you're sick. What about other 1.8's without hood scoops??? Or better yet, what about other 1.8 TURBOCHARGED cars without hoodscoops? Who's engine temps far exceeds that of an N/A engine. It's purely cosmetic...

[Soo__Fuego]

If you honestly think the 90 degree humid breeze blowing over it is going to give you any performance benefit, you're sick. It's purely cosmetic... ive read the thread a couple of times and i havent seen anyone say that "it cools the header, therefor giving you 15+hp" so where do get that from? you throw a hissy fit when ppl put words in your mouth so dont do it here, yes it mostly there for cosmetics but can you argue with the fact that in does drop engine bay temps down? if they are lower dont you agree the life of engine bay components will last longer? btw is that beautiful scoop on the turbo neons "functional"?

[lVlemphizStylez]

ive read the thread a couple of times and i havent seen anyone say that "it cools the header, therefor giving you 15+hp" so where do get that from? you throw a hissy fit when ppl put words in your mouth so dont do it here, yes it mostly there for cosmetics but can you argue with the fact that in does drop engine bay temps down? if they are lower dont you agree the life of engine bay components will last longer? btw is that beautiful scoop on the turbo neons "functional"?

No I don't think it's functional either...but far more beneficial to a turbo car than a 1.8 N/A one when you want to talk about calming underhood temps. And lastly...**** off dude.

Want to prove it drops the temps significantly then put a digital thermosensor in there, then block up the scoop and take the readings again. I personally think the drop is negligible, thus being purely cosmetic. Your engine bay ingests far more cool air through its front dam than that scoop. It is essentially like "throwing water on a ducks back". It's too small compared to the main entrance of fresh air to make a "difference"

[raionz]

:popcorn:

[manualcgt]

:popcorn:

x2.......:chuckles:

[marc]

If it wasn't functional they would have gone the far far cheaper route and done what the mustangs had - just a glued on scoop.

instead, this scoop actually directs air onto the engine.

I can speak to the fact that a car with a hood scoop is generally lots cooler than one without, simply by the blast you get when opening a hood.

It makes a far larger difference on a turbo car but every degree counts for something.

Personally I think its a longevity, not a performance factor, but it IS functional.

[GSBoek]

Yep, that's my thought about it too, knowing Toyota like I do. It might not make much a difference at all but they designed it to be functional.
Each time I take a look under the hood of my trusted '84 Toyota Crown I see this "all bits help" philosophy:
My car is the garden variety Super Saloon trim level with the 5M engine, but it still comes with sepparate cooling radiators for each of the fluids. One for engine oil, one for tranny oil, one for PS fluid and the main for coolant. Where they absolutely necessary? Not really, the car would probably have been fine without at least 2 of them, but I guess Toyota didn't take chances. Probably same philosofy behind the scoop on the Celica too.

[Lo_Pro_Life]

holy fvck.

to answer the kid who started this post YES there has been a ram air system made search it on yahoo. i highly doubt its still in production but someone might have it still sittin on clearence in some place. it runs the same as your intake only backwards curve you have to move your battery to the trunk it runs a thermal resistant tube sort of like the tubes you can buy for your dryer at home. that has a vented port that bolts up to the hood and it comes with a bypass and plastic/ foam insert for the hood scoop for those rainy days.

2nd off. the fabreeze **** save your self time make it last CLEAN YOUR FVCKIN CAR.

insted of spraying it into your engine bay. carpets? hmm? and if you MUST have your celica smelling like Orchard Fresh you fvckin fa-g unscrew the glove box take out your filter and spray that.

3rd WTF! think about what you are saying heat dispersent? when your parked with scoops you cna see heat leaving the bay. POINT 1.

POINT 2 if air is comeing in the nose of the celica and the "mouth" passing over the top of the motor and across the oil pan that is removing heat. heating the air from(Im in texas) 99-100 to 150+ degrees so by the time the air gets to the back of the bay its to hot to help where as the freshly fed air coming in the top scoop is being forced DOWN out the bottom and then it transfers heat also if you have half a brain you can imagine the air flow with out requesting a god dam picture.

>>>>>>>>>>>Hood scoop
>>>>>>>>>-----> \
>>>>>>>>>/------>\ |
air in ---->] Engine | |Cabin
>>>>>>>>>\-----> v |
>>>>>>>Underside>\>>>>>>>>>>>



thats the best i can do so i hope you can figure it out.


oh yeah :closed:

[ekindbest]

holy fvck.

to answer the kid who started this post YES there has been a ram air system made search it on yahoo. i highly doubt its still in production but someone might have it still sittin on clearence in some place. it runs the same as your intake only backwards curve you have to move your battery to the trunk it runs a thermal resistant tube sort of like the tubes you can buy for your dryer at home. that has a vented port that bolts up to the hood and it comes with a bypass and plastic/ foam insert for the hood scoop for those rainy days.

2nd off. the fabreeze **** save your self time make it last CLEAN YOUR FVCKIN CAR.

insted of spraying it into your engine bay. carpets? hmm? and if you MUST have your celica smelling like Orchard Fresh you fvckin fa-g unscrew the glove box take out your filter and spray that.

3rd WTF! think about what you are saying heat dispersent? when your parked with scoops you cna see heat leaving the bay. POINT 1.

POINT 2 if air is comeing in the nose of the celica and the "mouth" passing over the top of the motor and across the oil pan that is removing heat. heating the air from(Im in texas) 99-100 to 150+ degrees so by the time the air gets to the back of the bay its to hot to help where as the freshly fed air coming in the top scoop is being forced DOWN out the bottom and then it transfers heat also if you have half a brain you can imagine the air flow with out requesting a god dam picture.

>>>>>>>>>>>Hood scoop
>>>>>>>>>-----> \
>>>>>>>>>/------>\ |
air in ---->] Engine | |Cabin
>>>>>>>>>\-----> v |
>>>>>>>Underside>\>>>>>>>>>>>



thats the best i can do so i hope you can figure it out.


oh yeah

werd

[Dasher17]

try it...your exhaust manifold exceeds temps of a constant 150+ degrees F. If you honestly think the 90 degree humid breeze blowing over it is going to give you any performance benefit, you're sick. What about other 1.8's without hood scoops??? Or better yet, what about other 1.8 TURBOCHARGED cars without hoodscoops? Who's engine temps far exceeds that of an N/A engine. It's purely cosmetic...

Good god I think this is the first time I have ever agreed with you.


So I think we can agree that it is functional in that air goes into the engine via the scoop, however whether or not it actually helps is debatable. Isn't there one hood out there that doesn't have a scoop for the 7th gen? I could have sworn I saw a thread on it a while back. But it's not like your engine is going to overheat if the scoop is removed, nor do I think you will see a difference in your quarter mile time, it's about as useful as removing a butterfly valve imo.

[manualcgt]

Okay...heres another simple idea I though of that I will try since will only cost me like a buck or two.
Use some tubing to connect the front grill to the air box instead of using the hood scoop. Much simpler. NO battery removal
<a href="http://s61.photobucket.com/albums/h68/lilgrinder0627/?action=view&current=IMG_3456resizepaint.jpg" target="_blank"><img src="http://i61.photobucket.com/albums/h68/lilgrinder0627/IMG_3456resizepaint.jpg" border="0" alt="Photobucket"></a>

[yodaddyguido]

:eatpop:

[Lo_Pro_Life]

Okay...heres another simple idea I though of that I will try since will only cost me like a buck or two.
Use some tubing to connect the front grill to the air box instead of using the hood scoop. Much simpler. NO battery removal
<a href="http://s61.photobucket.com/albums/h68/lilgrinder0627/?action=view&current=IMG_3456resizepaint.jpg" target="_blank"><img src="http://i61.photobucket.com/albums/h68/lilgrinder0627/IMG_3456resizepaint.jpg" border="0" alt="Photobucket"></a>

already being done, and the veilside kit has the best inlet for that kind of production the only diff is you have to move the radiator res. and if you want reallly heavy flow cut upper radiator bar and install raised or lowered weld on bar.