Hood flutter at high speed - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

TheseColorsDontRun · 08-23-2013, 09:01 AM

Up around 80mph, looking at the driver side "hump" I can clearly see the hood moving, compared to the fender. Around 90 the hood seems to be lifting a good 1/4" or so above the fender. Anyone else experienced this? Is there a fix for it or is this just the nature of a lightweight hood?

Turdinator · 08-23-2013, 09:15 AM

There was a thread on this once before. I think it was a European owner had noticed it on the autobahn. Can't find it right now tho. Maybe someone else can link it here.

TheseColorsDontRun · 08-23-2013, 10:32 AM

I don't know how many of you spend any amount of time going that fast. Up to about 70mph, no movement, but right around 80 it really starts dancing. Very disconcerting. I wonder if a hood damper kit would help?

Asphalt~86 · 08-23-2013, 10:43 AM

Yeah I watch mine dance all the time. Change up the music.

Guillaume · 08-23-2013, 10:45 AM

Definitely the case for me from 180 kph onwards.

Kimsey47 · 08-23-2013, 11:01 AM

Haven't noticed any dancing on mine at those speeds, will try to keep an eye out for it again.

TheseColorsDontRun · 08-23-2013, 11:33 AM

Quote:

Originally Posted by Kimsey47

Haven't noticed any dancing on mine at those speeds, will try to keep an eye out for it again.

Beware, you can't unsee it. It's not really something you notice unless you are looking for it, or unless you have seen it before and know it's there, then you see it alllll the time.

Kimsey47 · 08-23-2013, 11:36 AM

Quote:

Originally Posted by TheseColorsDontRun

Beware, you can't unsee it. It's not really something you notice unless you are looking for it, or unless you have seen it before and know it's there, then you see it alllll the time.

LOL, I'm sure you're right! I had looked prior when a previous post like this came about but I didn't see anything that I felt was extreme.

TheseColorsDontRun · 08-23-2013, 11:40 AM

Quote:

Originally Posted by Kimsey47

LOL, I'm sure you're right! I had looked prior when a previous post like this came about but I didn't see anything that I felt was extreme.

Well, whatever you do, don't go 90+ and look at it. Guaranteed unseeable hood motions.

frslee · 08-23-2013, 02:42 PM

It's an aluminum hood that's held by a latch... As long as the latch doesn't unlock, I wouldn't worry. One time I guess I shut the hood lightly and the hood popped when I was on highway. Freaked me out. haha

I doubt subaru/toyota will do anything about this unless hood flies off.

ZionsWrath · 08-23-2013, 02:46 PM

Pics or it didn't happen.

charged86 · 08-23-2013, 02:52 PM

Quote:

Originally Posted by TheseColorsDontRun

Up around 80mph, looking at the driver side "hump" I can clearly see the hood moving, compared to the fender. Around 90 the hood seems to be lifting a good 1/4" or so above the fender. Anyone else experienced this? Is there a fix for it or is this just the nature of a lightweight hood?

I saw this while driving in a head wind in the winter time about 100 mph I kept the accelerator down though lol

zoomzoomers · 08-23-2013, 02:58 PM

There was a previous thread about this and a number of other members have noticed this too.

It happened to me about about 85 mph and it freaked me out so bad that I slammed on the brakes and pulled over to check that the hood was fully closed. I guess it's the nature with the twins, but in truth I've been in lighter/smaller cars that didn't do that at similar speeds. You're right though, once seen it can't be unseen.

SpeedLab · 08-23-2013, 05:22 PM

Since no one posted the solution for this - open your hood and look on either side for the cylinder shaped rubber bumpers the hood rests on. Directly behind he headlights. They may look ordinary, but they screw in and out ( the rubber is spiralled all the way around). My guess is if you take them both out a half turn or more you will notice a huge difference in the amount the hood wiggles around.

All modern Subarus I've seen have these adjustable hood bumps for exactly this reason. They aren't exactly consistently adjusted from the factory.

Enjoy.

Sent from my iPad using Tapatalk HD

08-23-2013, 09:01 AM	#1
TheseColorsDontRun Keep calm and drive on Join Date: Sep 2012 Drives: 2013 WRB BRZ Limited 6M Location: Mt. Airy, MD Posts: 404 Thanks: 56 Thanked 169 Times in 119 Posts Mentioned: 19 Post(s) Tagged: 0 Thread(s)	Hood flutter at high speed Up around 80mph, looking at the driver side "hump" I can clearly see the hood moving, compared to the fender. Around 90 the hood seems to be lifting a good 1/4" or so above the fender. Anyone else experienced this? Is there a fix for it or is this just the nature of a lightweight hood? __________________ Build thread

08-23-2013, 11:01 AM	#6
Kimsey47 Senior Member Join Date: Mar 2012 Drives: 2016 STI DGM Location: Chattanooga, TN Posts: 1,875 Thanks: 1,189 Thanked 1,460 Times in 662 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Haven't noticed any dancing on mine at those speeds, will try to keep an eye out for it again. __________________ Subaru STI :

08-23-2013, 02:58 PM	#13
zoomzoomers Senior Member Join Date: Nov 2011 Drives: 2013 Subaru SWP BRZ Limited 6AT Location: Darkside Posts: 1,862 Thanks: 526 Thanked 305 Times in 207 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	There was a previous thread about this and a number of other members have noticed this too. It happened to me about about 85 mph and it freaked me out so bad that I slammed on the brakes and pulled over to check that the hood was fully closed. I guess it's the nature with the twins, but in truth I've been in lighter/smaller cars that didn't do that at similar speeds. You're right though, once seen it can't be unseen. __________________ Man Law#17:A man in the company of a hot, seductively dressed, woman MUST remain sober enough to fight! MODS: AVO tubes + filter, Cusco (F) strut brace w/ MC brace, Perrin CBE, Subaru OEM trunk tray, Grimmspeed front license re-locator & hood struts and Beatsonic rear cam.

08-23-2013, 05:22 PM	#14
SpeedLab Member Join Date: Aug 2013 Drives: White Location: Wash. DC Posts: 66 Thanks: 0 Thanked 12 Times in 9 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Since no one posted the solution for this - open your hood and look on either side for the cylinder shaped rubber bumpers the hood rests on. Directly behind he headlights. They may look ordinary, but they screw in and out ( the rubber is spiralled all the way around). My guess is if you take them both out a half turn or more you will notice a huge difference in the amount the hood wiggles around. All modern Subarus I've seen have these adjustable hood bumps for exactly this reason. They aren't exactly consistently adjusted from the factory. Enjoy. Sent from my iPad using Tapatalk HD __________________ Because it didn't break does not mean it's track proven.

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08-23-2013, 10:32 AM	#3
TheseColorsDontRun Keep calm and drive on Join Date: Sep 2012 Drives: 2013 WRB BRZ Limited 6M Location: Mt. Airy, MD Posts: 404 Thanks: 56 Thanked 169 Times in 119 Posts Mentioned: 19 Post(s) Tagged: 0 Thread(s)	I don't know how many of you spend any amount of time going that fast. Up to about 70mph, no movement, but right around 80 it really starts dancing. Very disconcerting. I wonder if a hood damper kit would help?

08-23-2013, 10:43 AM	#4
Asphalt~86 Banned Join Date: Oct 2012 Drives: Asphalt AT Location: Midwest Posts: 813 Thanks: 324 Thanked 608 Times in 262 Posts Mentioned: 10 Post(s) Tagged: 0 Thread(s)	Yeah I watch mine dance all the time. Change up the music.

08-23-2013, 10:45 AM	#5
Guillaume Senior Member Join Date: Jul 2012 Drives: Exige S 240 Location: Belgium Posts: 732 Thanks: 319 Thanked 602 Times in 287 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	Definitely the case for me from 180 kph onwards.

08-23-2013, 02:42 PM	#10
frslee Just drive it Join Date: Mar 2013 Drives: 13' FR-S Location: Maryland Posts: 1,122 Thanks: 97 Thanked 321 Times in 218 Posts Mentioned: 10 Post(s) Tagged: 3 Thread(s)	It's an aluminum hood that's held by a latch... As long as the latch doesn't unlock, I wouldn't worry. One time I guess I shut the hood lightly and the hood popped when I was on highway. Freaked me out. haha I doubt subaru/toyota will do anything about this unless hood flies off.

08-23-2013, 02:46 PM	#11
ZionsWrath Thanks Join Date: Apr 2013 Drives: BRZ Location: NY Posts: 4,163 Thanks: 5,989 Thanked 3,100 Times in 1,498 Posts Mentioned: 38 Post(s) Tagged: 3 Thread(s)	Pics or it didn't happen.

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