new Sti.....bonnet movement at speed....normal??
16 June 2004, 02:15 PM
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new Sti.....bonnet movement at speed....normal??
I have an 04 plate STi type UK. It apparently has an aluminium bonnet which is mean to be lighter. I am worried though becuase when I am going very fast there is a lot of movement in the bonnet and it looks like it could come up.......is this experienced by anyone else?? Also......at very high speeds (private road of course!!) there is a whistleing noise in the car which is quite loud.....anyone experienced this either????
Any help would be appreciated.
Any help would be appreciated.
16 June 2004, 02:21 PM
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Bonnet flutter is "normal" on these cars. It's, as you say, a combination of lightweight (or inadequately braced, depending on your point of view) construction and the large scoop cramming air through the intercooler.
Whistling could be window seals, but fold your mirrors back and and check there are no QA stickers behind them. These have been known to partially lift and vibrate/whine.
Whistling could be window seals, but fold your mirrors back and and check there are no QA stickers behind them. These have been known to partially lift and vibrate/whine.
16 June 2004, 02:22 PM
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Originally Posted by LozSTiV8
I have an 04 plate STi type UK. It apparently has an aluminium bonnet which is mean to be lighter. I am worried though becuase when I am going very fast there is a lot of movement in the bonnet and it looks like it could come up.......is this experienced by anyone else?? Also......at very high speeds (private road of course!!) there is a whistleing noise in the car which is quite loud.....anyone experienced this either????
Any help would be appreciated.
Any help would be appreciated.
Yep welcome to the STI ownership
my MY03 does this as well. You should also notice the rear spoiler wobble 
The Noise is the window seals. and don't worry to much about the bonnet it's quite normalDave
16 June 2004, 02:29 PM
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thanks for the help guys......I found out when I was sitting on the bumper of an Evo 6 coming down the motorway........when I saw it I thought it was going to pop up so slowed down......was gutted because he thought he had whooped me......never mind....I will know for the future.....and as for the rear spoiler..........it is continually flexing......annoying at first but got used to it now!!!!!
16 June 2004, 02:51 PM
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Originally Posted by 16vmarc
Did the classics have an aluminium bonnet aswell??
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16 June 2004, 03:21 PM
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Originally Posted by markus_UK
my MY04 WRX has alu bonnet ... did not like droping it to shut it ... thought it might shatter
16 June 2004, 03:25 PM
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Originally Posted by greasemonkey
It's made of aluminium, not glass or china...
Ya know what I mean I think ... having had steel bonnets B4 was amazed how little it really weighs ... which means ya have to drop it from a greater height to get it to lock .... just do not like doing that on a new car !
Last edited by markus_UK; 16 June 2004 at 03:30 PM.
16 June 2004, 09:39 PM
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Yup 150mph on the Autobahn and the bonnet is lifting, but its never come off yet... touch wood!
Also, when your at Autobahn speeds, the rear spoiler stops wobbling!
Also, when your at Autobahn speeds, the rear spoiler stops wobbling!
16 June 2004, 09:53 PM
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Bonnet flutter is a design feature.
Its purpose is to distract you so that you do not look in the rear view mirror & notice that the rear spoiler is flapping like Rolf Harris' wobble board
Its purpose is to distract you so that you do not look in the rear view mirror & notice that the rear spoiler is flapping like Rolf Harris' wobble board
16 June 2004, 10:43 PM
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This is what I love about scooby net - I have spent the last two months since buying WRX worrying about the bonnet at high speed! where else on the earth would I find out the answer to that question!!! - tops !!
16 June 2004, 11:11 PM
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isnt it nice when you realise that its not just you!
I have pulled over a few times, just to check if I shut the bonnet properly. 'Er in doors thinks Im mad and seeing things!
Im also sure I can see the back of the scoop flapping around also...
I have pulled over a few times, just to check if I shut the bonnet properly. 'Er in doors thinks Im mad and seeing things!
Im also sure I can see the back of the scoop flapping around also...
16 June 2004, 11:58 PM
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Originally Posted by markus_UK
Ya know what I mean I think ... having had steel bonnets B4 was amazed how little it really weighs ... which means ya have to drop it from a greater height to get it to lock .... just do not like doing that on a new car !
Why on earth are you dropping the bonnet to close it? Lower it gently while supporting its weight, then press it smartly shut with the palm of your hand.
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