ripples?

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Nov 30, 2008 | 07:53 PM

slippinsideways

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Staging Lane

Joined: Feb 2008

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From: central IL

ripples?

I had my Z28 sitting on jack stands while i did my tranny build.

Now that the car is off the jack stands and in the garage, i noticed many weird ripples in the rear 1/4's around antenna/spoiler. (more toward the top of each panel)
could this be caused by it sitting on the jack stands?

Nov 30, 2008 | 08:11 PM

NWIAdam

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From: Northwest Indiana

Probably torque creases.

Nov 30, 2008 | 08:46 PM

nemss1

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From: Edmond, OK

yup, torque creases. our cars do that. sfc's help this

Nov 30, 2008 | 09:22 PM

Fast_94_Z

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From: carol stream illinois

^^ damn you guys beat me to it. subframe connectors are a must and if you want to take it farther put a cage into the car.

Nov 30, 2008 | 10:10 PM

slippinsideways

Thread Starter

Staging Lane

Joined: Feb 2008

Posts: 91

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From: central IL

but just from sitting on jack stands? its been on like a gagillion lifts and jack stands before

will the sfc make the ripples so away!?
please say yes cause i was already planning on ordering some!

Nov 30, 2008 | 10:34 PM

nemss1

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From: Edmond, OK

Quote:

Originally Posted by slippinsideways

but just from sitting on jack stands? its been on like a gagillion lifts and jack stands before

will the sfc make the ripples so away!?
please say yes cause i was already planning on ordering some!

ripples normally happen from the torque on the uni-body. sfc's wont make the ripples go away but will prevent them from becoming worse. also prevents torque twist of the body. sfc's are a good investment. torque twist can throw the doors out of align

Nov 30, 2008 | 10:52 PM

slippinsideways

Thread Starter

Staging Lane

Joined: Feb 2008

Posts: 91

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From: central IL

just weird how they weren't there before we jacked it up, at least never noticed them..
but they're noticeable now!

so paint less dent repair? hopefully no body work

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Dec 1, 2008 | 12:22 AM

nemss1

12 Second Club

Joined: Jun 2008

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From: Edmond, OK

Quote:

Originally Posted by slippinsideways

just weird how they weren't there before we jacked it up, at least never noticed them..
but they're noticeable now!

so paint less dent repair? hopefully no body work

jacking it up wouldnt cause ripples. but as stated u do need to be careful where u jack the car up. i only notice my ripples at a certain angle. mine arent noticeable enough to go as far as paintless dent repair. dont know how bad yours are tho

Dec 1, 2008 | 04:50 PM

#10

slippinsideways

Thread Starter

Staging Lane

Joined: Feb 2008

Posts: 91

Likes: 0

From: central IL

their horrible
ill take pictures today

i had the jack stands on front frame area (not pinch weld and not susp.)
rear jack stands were on the LCA's

Dec 1, 2008 | 11:06 PM

#11

JD_AMG

TECH Senior Member

Joined: Jan 2004

Posts: 5,798

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From: St.Charles MO

This is a touchy subject, many think its due to chassis flex (which it could be), and think it will be fixed with SFC's (which it wont).
Assuming it is actually from chassis flex the SFC's wont help because they don't reduce any flex past the LCA's, which is where the car would be flexing (if it really is the case) to cause these dimples.
There are many that have SFC's and still get the dimples:
https://ls1tech.com/forums/9605072-post25.html
https://ls1tech.com/forums/9605270-post26.html
https://ls1tech.com/forums/6710280-post9.html
https://ls1tech.com/forums/6712303-post13.html
https://ls1tech.com/forums/6717153-post24.html
https://ls1tech.com/forums/6717242-post26.html

Search for torque dimples, there are so many threads on this, I just picked out a few example posts of what I'm talking about.