Boredom = air box for cowl scoop. - Toyota Yaris Forums

annn · 02-28-2011, 01:13 PM

Got bored today and designed and built a working glass prototype air box for the yaris cowl air scoop.

TRDMarty · 03-01-2011, 08:55 AM

Looks pretty cool.
What will this air box actually do???
Is it for engine?? Or for cabin air??

annn · 03-01-2011, 01:16 PM

Quote:

Originally Posted by TRDMarty

Looks pretty cool.
What will this air box actually do???
Is it for engine?? Or for cabin air??

cool forced air for engine

yaris2010RS · 03-01-2011, 02:01 PM

very nice, i hate it when i get bored i usually do messed up stuff to my yaris, lol

RedRide · 03-01-2011, 03:34 PM

It will work as in it wii suck in air.

However, IMO, I doubt that it will have any noticable performance effect and even then, you will have to be going at a considerable speed for it to have any positive effect.

yaris2010RS · 03-01-2011, 03:45 PM

i disagree, it will help to keep the engine bay cooler. the ultimate add on to this mod would be to add a pipe to the intake

annn · 03-01-2011, 03:50 PM

I have built many ram air systems going back to the 1980s.

What Is not in pics is ...The fitting on the bottom fits to a hose that feeds air to the air filter box...

This design fitted to a sealed air filter box will supply much cooler air at a slight pressure increase at normal speed. Combustion engines love cool fresh air so I disagree ... From my studies over the years .

10 horsepower increase no ! But a improvement over stock for sure and even better than just a normal cai.

yaris2010RS · 03-01-2011, 03:56 PM

with the right filter in there and a sealed system u will be getting a huge boost in pressure when moving

RedRide · 03-01-2011, 04:15 PM

Quote:

Originally Posted by yaris2010RS

with the right filter in there and a sealed system u will be getting a huge boost in pressure when moving

The key word her is "moving" and how fast it has to be moving is certainly debatable as is how much of a boost (if any) will be realized.

Also, the area by the cowl is an area of lower pressure when the car is moving fast.

A cowl scoop has a wow factor and this is why people do it.
However, "a huge boost"? That is simply wishful thinking.

Bluevitz-rs · 03-01-2011, 07:05 PM

What do you do when it rains?

sickpuppy1 · 03-01-2011, 07:11 PM

Quote:

Originally Posted by Bluevitz-rs

What do you do when it rains?

Uh......go inside??!!
Wow, that just opens up one of those coming in from the rain jokes, ya know, just kidding of course..........sorta, LOL

auxmike · 03-01-2011, 08:24 PM

If cold air=more power, then am I getting more hp in this 28degree winter weather than I do on a 90 summer's day?

2005rs · 03-01-2011, 08:28 PM

Quote:

Originally Posted by auxmike

If cold air=more power, then am I getting more hp in this 28degree winter weather than I do on a 90 summer's day?

yep.
use more fuel too

annn · 03-01-2011, 08:57 PM

Hose has a built in drain...

33OH · 03-02-2011, 10:16 AM

Very cool annn. Will you be selling these at all? Or just for your ride?

Keep us updated on the progress.

cali yaris · 03-02-2011, 12:34 PM

Quote:

The key word her is "moving" and how fast it has to be moving is certainly debatable as is how much of a boost (if any) will be realized.

Ram air scoops work, this is well known. It's pretty easy to build 1psi of boost or more with the right design. I'm quite sure he'll get some benefit from his design.

Yes, it takes some speed to realize the benefit, but even at a moderate speed you're going to get a power gain. And it's free.

RedRide · 03-02-2011, 02:19 PM

My point is, and the key phrase is, "the right design" .
Not only a right design but, the right design for any particular car and its unique air flow over its cowl.
IMO a cowl is a bad place to put an air scoop becase of eratic air flow over the cowl.

annn · 03-02-2011, 03:06 PM

Hmmm... My old 69 z28 and my Old 80 z38 both were factory cowl intake breathers....and my 70 trans am draws all it's air from it's reverse cowl shaker 10 inches from window and it has a air flow sensitive flapper that is quite active in the low pressure area...oh yea and my 450 + horse roller 355 in my stingray draws 100% of its air from a sealed l88 cowl scoop that's 1 inch from the window... I have never had any air starvation issues .. Even at 6500rpm..

2 Old heads I know use yarn taped to the hood to check air flow over hoods for scoop placement.. Not real science IMO but it worked for them for years and they both were excellent 1/4 mile winners.

I may tape some yarn to the yaris..lol

IMO... It's all just fun to me... I am not expecting anything from my mods to the yaris..all the yaris is for is good mileage and realiable function.

I have it set up to track it this spring and all my pals laugh at me but even if I place last at Least I took a econo egg and gave it a try ...lol

02-28-2011, 01:13 PM	#1
annn ヤリスワールド Drives: 2008 HB Join Date: May 2010 Location: seattle Posts: 380	Boredom = air box for cowl scoop. Got bored today and designed and built a working glass prototype air box for the yaris cowl air scoop.

03-01-2011, 02:01 PM	#4
yaris2010RS View User's Garage Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009 Location: Angus, Ontario Posts: 1,891	very nice, i hate it when i get bored i usually do messed up stuff to my yaris, lol __________________ If it has boobs or wheels sooner or later your gonna have problems with it

03-01-2011, 03:45 PM	#6
yaris2010RS View User's Garage Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009 Location: Angus, Ontario Posts: 1,891	i disagree, it will help to keep the engine bay cooler. the ultimate add on to this mod would be to add a pipe to the intake __________________ If it has boobs or wheels sooner or later your gonna have problems with it

03-01-2011, 03:56 PM	#8
yaris2010RS View User's Garage Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009 Location: Angus, Ontario Posts: 1,891	with the right filter in there and a sealed system u will be getting a huge boost in pressure when moving __________________ If it has boobs or wheels sooner or later your gonna have problems with it

03-01-2011, 08:24 PM	#12
auxmike Drives: 2008 HB, A/T, Power W/L/M Join Date: Oct 2008 Location: LI, New Yawk Posts: 2,063	If cold air=more power, then am I getting more hp in this 28degree winter weather than I do on a 90 summer's day? __________________ Never take eyes off opponent - Bruce Lee

03-01-2011, 08:55 AM	#2
TRDMarty Drives: Polar White 2008, 3Dr HB TRD ' Join Date: Mar 2009 Location: Corona CA Posts: 403	Looks pretty cool. What will this air box actually do??? Is it for engine?? Or for cabin air??

03-01-2011, 03:34 PM	#5
RedRide Drives: '09 Yaris carmine red 2d HB Join Date: Jun 2009 Location: Middletown, NY Posts: 1,501	It will work as in it wii suck in air. However, IMO, I doubt that it will have any noticable performance effect and even then, you will have to be going at a considerable speed for it to have any positive effect.

03-01-2011, 03:50 PM	#7
annn ヤリスワールド Drives: 2008 HB Join Date: May 2010 Location: seattle Posts: 380	I have built many ram air systems going back to the 1980s. What Is not in pics is ...The fitting on the bottom fits to a hose that feeds air to the air filter box... This design fitted to a sealed air filter box will supply much cooler air at a slight pressure increase at normal speed. Combustion engines love cool fresh air so I disagree ... From my studies over the years . 10 horsepower increase no ! But a improvement over stock for sure and even better than just a normal cai.

03-01-2011, 07:05 PM	#10
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	What do you do when it rains?

03-01-2011, 08:57 PM	#14
annn ヤリスワールド Drives: 2008 HB Join Date: May 2010 Location: seattle Posts: 380	Hose has a built in drain...

03-02-2011, 10:16 AM	#15
33OH Drives: '08 Yaris Join Date: Oct 2008 Location: Dover, Ohio Posts: 7,606	Very cool annn. Will you be selling these at all? Or just for your ride? Keep us updated on the progress.

03-02-2011, 02:19 PM	#17
RedRide Drives: '09 Yaris carmine red 2d HB Join Date: Jun 2009 Location: Middletown, NY Posts: 1,501	My point is, and the key phrase is, "the right design" . Not only a right design but, the right design for any particular car and its unique air flow over its cowl. IMO a cowl is a bad place to put an air scoop becase of eratic air flow over the cowl. Last edited by RedRide; 03-02-2011 at 02:39 PM.

03-02-2011, 03:06 PM	#18
annn ヤリスワールド Drives: 2008 HB Join Date: May 2010 Location: seattle Posts: 380	Hmmm... My old 69 z28 and my Old 80 z38 both were factory cowl intake breathers....and my 70 trans am draws all it's air from it's reverse cowl shaker 10 inches from window and it has a air flow sensitive flapper that is quite active in the low pressure area...oh yea and my 450 + horse roller 355 in my stingray draws 100% of its air from a sealed l88 cowl scoop that's 1 inch from the window... I have never had any air starvation issues .. Even at 6500rpm.. 2 Old heads I know use yarn taped to the hood to check air flow over hoods for scoop placement.. Not real science IMO but it worked for them for years and they both were excellent 1/4 mile winners. I may tape some yarn to the yaris..lol IMO... It's all just fun to me... I am not expecting anything from my mods to the yaris..all the yaris is for is good mileage and realiable function. I have it set up to track it this spring and all my pals laugh at me but even if I place last at Least I took a econo egg and gave it a try ...lol Last edited by annn; 03-02-2011 at 03:19 PM.

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