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Potential chassis flex: Need to be concerned?

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Old 05-13-2009, 11:51 AM
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chardonet
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Default Potential chassis flex: Need to be concerned?

Due to the incline of my driveway, everytime I drive in, the right front tire lifts off the ground by about 3 inches. I go very slow, but I do notice that the body creaks a bit. This happens every time I pull in (2-3 times a week). I have to drive in/out at an extreme angle because the front lip scrapes.

Do I need to be concerned about long-term issues with the chassis if I continue the above pattern? Thanks for any input.
Old 05-13-2009, 12:12 PM
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4ng crcs
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Default I'd be less concerned about fatigue/flex and more

concerned about burning out the ABS warning light.

Old 05-13-2009, 09:12 PM
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enthusiast
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Agree that traversing the street driveway transition very very slowly is good. You don't want to shock the unit body if you can avoid it.

I don't know exactly what the angles are but you could look into this product for the street curb portion, curb ramps that sit in the street gutter.

http://www.bridjit.com/index.php
Old 05-16-2009, 01:37 PM
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ashish
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the creaking noise could be from the rear window flexing a bit. you may want to ask your service shop to re-seat and re-glue it. i'd be very surprised if you are getting true chassis flex in a gt3 from scaling up sharp driveways, even without the rollcage.
Old 05-16-2009, 08:54 PM
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roberga
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the only noise I get it front the front struts and springs
Old 05-16-2009, 10:44 PM
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Bob Rouleau

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I'd guess it is the sway bar or spring perches. The GT3 chassis is seam welded and very stiff. That being said, there is always -some- flex in anything.
Old 05-17-2009, 01:07 AM
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cgomez
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Relax, having one wheel up in the air is a lot less stress than jacking up the car (and lifting one whole side from a 8sqin surface!
Also, its nothing compared to taking it to the track and doing 1G+ corners...
Old 05-19-2009, 04:45 PM
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95spiderman
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im not sure porsche made gt3 so solid -

i broke windshield from chassis flex at pocono. also get squeeks from dash and rear area after track sessions that goes away after few days. also, cup holder cover stays open after track day.

Last edited by 95spiderman; 05-19-2009 at 05:02 PM.
Old 05-20-2009, 12:22 AM
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C.J. Ichiban
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did you hit a curb to achieve said chassis flex? I've never had any issues other than squeaky suspension stuff
Old 05-20-2009, 01:08 AM
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MJSpeed
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Originally Posted by 95spiderman
im not sure porsche made gt3 so solid -

i broke windshield from chassis flex at pocono. also get squeeks from dash and rear area after track sessions that goes away after few days. also, cup holder cover stays open after track day.
Something just doesn't sound right. It almost sounds as if your car isn't seam welded at all..
Old 05-20-2009, 11:38 AM
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NoSubEDU
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I get some chassis flex going into my driveway. It's a valley curb and not too steep but the car definitely creaks and pops. Most of the time it comes from the front windshield. Occasionally I hear the rear window pop going over speed bumps at an angle.
Old 05-20-2009, 01:22 PM
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roberga
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Originally Posted by 95spiderman
im not sure porsche made gt3 so solid -

i broke windshield from chassis flex at pocono. also get squeeks from dash and rear area after track sessions that goes away after few days. also, cup holder cover stays open after track day.
something is wrong with what you have going on.
Old 05-20-2009, 01:42 PM
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_rocket
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GT3 street cars, even RSs, are not seam welded. Only cup cars are seam welded.
Old 05-20-2009, 03:55 PM
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NoSubEDU
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Originally Posted by _rocket
GT3 street cars, even RSs, are not seam welded. Only cup cars are seam welded.
That's what I thought. I think I remember hearing that some GT3 or RS owners had seam-welds...must had grabbed a cup shell??
Old 05-21-2009, 07:29 AM
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911rox
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i'm confused.... so which is it for GT3/RS? seam welded or not seam welded?


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