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Old 10-16-2016   #1
BlackZR1
 
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Default Aarrgh! crack in my windshield!

Looking around the car with a flashlight and I notice this crack at the bottom driver's side corner of my original windshield. Almost invisible without the flashlight at the right angle.
I guess the good news is that it begins and ends at an edge so it won't travel but what would cause a crack at this location?

Thanks,
Roger
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1990 ZR-1 #2699
Black on Black
15,000 miles
Full-time secondaries, 4.10 gears, C-beam plates, ported top end
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Old 10-16-2016   #2
secondchance
 
Join Date: Aug 2006
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Default Re: Aarrgh! crack in my windshield!

Was the car jacked up recently? Possibly with the roof off?
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Old 10-16-2016   #3
BlackZR1
 
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Default Re: Aarrgh! crack in my windshield!

Quote:
Originally Posted by secondchance View Post
Was the car jacked up recently? Possibly with the roof off?
Yes, I've had it jacked up a dozen times over the last year. Plastic roof is always on. I'm usually careful to use 2 jacks at the front jack points (1 on each side) lifting a little at a time alternating each side until I can get my larger jack under the front cross member. I've heard the forum mention how jacking unequally can cause cracked windshields so I have been careful.
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1990 ZR-1 #2699
Black on Black
15,000 miles
Full-time secondaries, 4.10 gears, C-beam plates, ported top end
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Old 10-17-2016   #4
BigJohn
 
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Default Re: Aarrgh! crack in my windshield!

Been doing wheel stander starts?
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Old 10-17-2016   #5
BlackZR1
 
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Default Re: Aarrgh! crack in my windshield!

Quote:
Originally Posted by BigJohn View Post
Been doing wheel stander starts?
Haha, I wish that was the cause!
I need a few more ponies for that.

What makes me mad is that I have taken great care not to lift either side unevenly for exactly this reason.
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Roger
1990 ZR-1 #2699
Black on Black
15,000 miles
Full-time secondaries, 4.10 gears, C-beam plates, ported top end
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Old 10-17-2016   #6
BigJohn
 
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Default Re: Aarrgh! crack in my windshield!

Quote:
Originally Posted by BlackZR1 View Post
Haha, I wish that was the cause!
I need a few more ponies for that.

What makes me mad is that I have taken great care not to lift either side unevenly for exactly this reason.
Yeah a cracked windshield really sucks.
I have both tops; I leave my hardtop in all the time.
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Old 10-17-2016   #7
Ryan Chappel
 
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Default Re: Aarrgh! crack in my windshield!

I have never taken the top off....PO never took the top off....
When I first posted here, I mentioned that I understood there was a lot of flex and a potential windshield damage issue when jacking unevenly...
....I remember a difference of opinion among posters here..
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Old 10-20-2016   #8
Blownrunner
 
Join Date: Dec 2012
Location: Tampa, FL
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Default Re: Aarrgh! crack in my windshield!

I thought that using the under the rocker stiffening bars help this? Installed them on mine and adjusted. Addressing the flexing body is a far better mod than any other for this car. On a brighter side, will insurance cover it? I have the classic car insurance and the windshield repair is 100% reimbursable. Then you can get one of those fancy hi-tech reproduction windshields for free.
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Old 10-21-2016   #9
tccrab
 
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Default Re: Aarrgh! crack in my windshield!

Quote:
Originally Posted by Ryan Chappel View Post
I have never taken the top off....PO never took the top off....
When I first posted here, I mentioned that I understood there was a lot of flex and a potential windshield damage issue when jacking unevenly...
....I remember a difference of opinion among posters here..
I've driven "Girlfriend" with targa top out, jacked her up with the top out, and jacked her up with the top on.
I did leave the top on when I put her up on very tall jackstands when I replaced the transmission.
That being said, no cracks.
Heck, I don't have any delam either.
Go figure.

Having driven girlfriend with her top off, I can tell you that you don't want to go much past 125 or so.
I'll mess up your comb-over.
It gets really noisy and the buffeting is pretty severe. Rolling up the side windows helps, but doesn't cure it.

'Crabs
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Old 10-30-2016   #10
onetinsoldier
 
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Default Re: Aarrgh! crack in my windshield!

your insurance probably wont cover it unless it obstructs your vision ! dont call them, get a hammer ! a rock fell off a truck on the highway................! I saw a company on ebay that sells reproduction zr1 windshields , about 2600.00
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