Maxracing dynamic intake duct - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Mars2 · 11-11-2012, 10:56 PM

Il like that dynamic intake hose a lot. Show it in Thailand Option mag this month
Think at high speed to give significant HP gain because of the frontal air pressure.

http://www.facebook.com/photo.php?fb...type=1&theater
http://www.maxracing.co.jp/maxhp_v11...ke/intake.html

wootwoot · 11-11-2012, 11:00 PM

wow... I like this thing.

UncleFester · 11-11-2012, 11:02 PM

Interesting

zooki · 11-11-2012, 11:24 PM

Depends on how fast your talking about. I had a ram air setup on my Mustang, with a scoop that bolted under the leading edge of the bumper. I hooked a U tube manometer up to the airbox, and at 100 MPH it pressurized the airbox a whopping 4 inches of water, which is about .2 PSI. I seriously doubt this will give you much extra horsepower until you were going a lot faster. It mainly helped by ducting colder air from outside, but these cars already pulled from the incoming air in front of the radiator instead of from inside the engine compartment.

@Art_Mighty · 11-11-2012, 11:27 PM

RedRocket · 11-11-2012, 11:39 PM

I really don't see this adding anything significant.. The Stock system is very close to the same thing as this... The added ducting negates the RAM effect of the intake, and both are pulling cooler air... ... On a different car this would be tits... but i doubt this will add any kind of measurable HP.

Mars2 · 11-11-2012, 11:46 PM

+0,2 psi is big number because you based line is not 0 psi but some vacuum number.
intake is under vacuum from engine so anything positive is huge gain.
Or i get that wrong?

carbonBLUE · 11-11-2012, 11:48 PM

I can only imagine this would increase the chance of hydrolocking

zooki · 11-12-2012, 12:06 AM

Well, you figure that an n/a motor has roughly 14.7 PSI(at sea level) pushing air into the cylinders when the valves open. So another 0.2 PSI really won't make that much difference. This is simplifying things greatly, but the basic concept is the same. Think about how much boost is needed to make more HP. 4 PSI will make, what, around 70-80 HP over stock? So 0.2 might make 5 HP more or so.

Grip Ronin · 11-12-2012, 12:24 AM

thats cleaner then the idea i had for a similar intake design.

sierra · 11-12-2012, 12:48 AM

I don't like the way it blocks so much of the heat exchangers from the cooling airflow or how low it is in case of a bow wave in deep water.
If the air is taken from a high pressure area, without blocking the cooling flow, it will aid the aerodynamics[slightly] and give a little bit of boost.
The Toyota front end looks like it flows better than the BRZ and should duct good airflow.
The area above and in front of the HE'rs should work well, without dropping it down low.

SilverSkyline210 · 11-12-2012, 02:03 AM

I wanna see what it looks like with the bumper on :o

and I wanna see someone make a bumper air duct like a 350z, less chance of sucking up water, wonder if it would look good on a BRZ or FRS bumper

sierra · 11-12-2012, 05:40 AM

Quote:

Originally Posted by SilverSkyline210

I wanna see what it looks like with the bumper on :o

and I wanna see someone make a bumper air duct like a 350z, less chance of sucking up water, wonder if it would look good on a BRZ or FRS bumper

The only problem with that is you need to add a drain for the water when it's raining which removes any boost effect.

wparsons · 11-12-2012, 08:02 AM

Quote:

Originally Posted by Mars2

+0,2 psi is big number because you based line is not 0 psi but some vacuum number.
intake is under vacuum from engine so anything positive is huge gain.
Or i get that wrong?

At WOT you'll be running 0 vacuum, engines only get into vacuum when the throttle plate is partially (or fully) closed.

11-11-2012, 10:56 PM	#1
Mars2 Senior Member Join Date: Sep 2012 Drives: GT86, AUDI RS2, VW T5 R32 Vortech Location: France Posts: 275 Thanks: 1 Thanked 72 Times in 53 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Maxracing dynamic intake duct Il like that dynamic intake hose a lot. Show it in Thailand Option mag this month Think at high speed to give significant HP gain because of the frontal air pressure. http://www.facebook.com/photo.php?fb...type=1&theater http://www.maxracing.co.jp/maxhp_v11...ke/intake.html Last edited by Guff; 11-11-2012 at 11:42 PM.

11-11-2012, 11:02 PM	#3
UncleFester Senior Member Join Date: Jun 2012 Drives: BRZ Location: Northern Virginia Posts: 597 Thanks: 157 Thanked 178 Times in 120 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Interesting Last edited by UncleFester; 11-12-2012 at 09:46 AM.

11-11-2012, 11:27 PM	#5
@Art_Mighty uosɹǝdʎɐl ʇɹǝdxǝ Join Date: Sep 2012 Drives: Asphalt AVO FR-S w/a Slushbox! :P Location: Chicago (Edgewater) Posts: 908 Thanks: 741 Thanked 349 Times in 224 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	__________________ ...because some men aren't looking for anything logical, like money. They can't be bought, bullied, reasoned, or negotiated with. Some men just want to watch the world burn

11-11-2012, 11:48 PM	#8
carbonBLUE Reverse Burnouts Join Date: Oct 2011 Drives: 2013 Argento FRS Location: dallas!!! Posts: 2,894 Thanks: 707 Thanked 1,257 Times in 592 Posts Mentioned: 30 Post(s) Tagged: 1 Thread(s)	I can only imagine this would increase the chance of hydrolocking __________________ 2000 Carbon Blue Toyota Celica GTS 152000 miles (wont forget you) 2013 Argento Scion FR-S 2011 Infiniti G37x

11-12-2012, 12:24 AM	#10
Grip Ronin The Mechanic Join Date: Mar 2012 Drives: Civic Turbo,FR-S Location: NJ Posts: 928 Thanks: 130 Thanked 171 Times in 119 Posts Mentioned: 2 Post(s) Tagged: 1 Thread(s)	thats cleaner then the idea i had for a similar intake design. __________________ IG-Joey_Soul Progress Thread Ported billet 20G

11-11-2012, 11:00 PM	#2
wootwoot Senior Member Join Date: Jul 2012 Drives: FRS Location: Cali Posts: 1,558 Thanks: 188 Thanked 461 Times in 264 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	wow... I like this thing.

11-11-2012, 11:24 PM	#4
zooki Senior Member Join Date: Jun 2012 Drives: waiting on a 2021... Location: Texas Posts: 770 Thanks: 190 Thanked 410 Times in 233 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Depends on how fast your talking about. I had a ram air setup on my Mustang, with a scoop that bolted under the leading edge of the bumper. I hooked a U tube manometer up to the airbox, and at 100 MPH it pressurized the airbox a whopping 4 inches of water, which is about .2 PSI. I seriously doubt this will give you much extra horsepower until you were going a lot faster. It mainly helped by ducting colder air from outside, but these cars already pulled from the incoming air in front of the radiator instead of from inside the engine compartment.

11-11-2012, 11:39 PM	#6
RedRocket Senior Member Join Date: Sep 2012 Drives: Firestorm Red FR-S Location: Baltimore MD Posts: 271 Thanks: 5 Thanked 120 Times in 55 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I really don't see this adding anything significant.. The Stock system is very close to the same thing as this... The added ducting negates the RAM effect of the intake, and both are pulling cooler air... ... On a different car this would be tits... but i doubt this will add any kind of measurable HP.

11-11-2012, 11:46 PM	#7
Mars2 Senior Member Join Date: Sep 2012 Drives: GT86, AUDI RS2, VW T5 R32 Vortech Location: France Posts: 275 Thanks: 1 Thanked 72 Times in 53 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	+0,2 psi is big number because you based line is not 0 psi but some vacuum number. intake is under vacuum from engine so anything positive is huge gain. Or i get that wrong?

11-12-2012, 12:06 AM	#9
zooki Senior Member Join Date: Jun 2012 Drives: waiting on a 2021... Location: Texas Posts: 770 Thanks: 190 Thanked 410 Times in 233 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Well, you figure that an n/a motor has roughly 14.7 PSI(at sea level) pushing air into the cylinders when the valves open. So another 0.2 PSI really won't make that much difference. This is simplifying things greatly, but the basic concept is the same. Think about how much boost is needed to make more HP. 4 PSI will make, what, around 70-80 HP over stock? So 0.2 might make 5 HP more or so.

11-12-2012, 12:48 AM	#11
sierra Senior Member Join Date: Jul 2012 Drives: Skoda Yeti DSG diesel 4x4 Location: W. Australia Posts: 1,203 Thanks: 336 Thanked 307 Times in 230 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	I don't like the way it blocks so much of the heat exchangers from the cooling airflow or how low it is in case of a bow wave in deep water. If the air is taken from a high pressure area, without blocking the cooling flow, it will aid the aerodynamics[slightly] and give a little bit of boost. The Toyota front end looks like it flows better than the BRZ and should duct good airflow. The area above and in front of the HE'rs should work well, without dropping it down low.

11-12-2012, 02:03 AM	#12
SilverSkyline210 Senior Member Join Date: Jul 2012 Drives: WRB BRZ Location: Silver Spring, MD Posts: 114 Thanks: 82 Thanked 94 Times in 43 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	I wanna see what it looks like with the bumper on :o and I wanna see someone make a bumper air duct like a 350z, less chance of sucking up water, wonder if it would look good on a BRZ or FRS bumper

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