Re: Windshield
 

I'd say it was a wise (Owl) decision rather than a chicken move, Craig. Interestingly, I got a small stone crack (1/4") this morning when I took the Zee for a 20-mile run which included a quick "activate the secondaries" segment which is when I encountered the stone from a semi. I don't have much delam, so I am hoping this does not spread.

Re: Windshield
 

Mahalo for your thoughts there Bob! Sorry to hear about the stone and crack. I hope that can be repaired by injection or something. I'm curious to know the percentage of our car that have no delamination....those are the very lucky folks. :cheers:

Re: Windshield
 

You can have the crack drilled and sealed if it's from an edge or sealed if it's in the middle . The earlier the better

Re: Windshield
 

What causes delamination?

Why did GM install delaminated windshields?

Re: Windshield
 

Poor preparation... Gm also have a similar windshield in a small van around the same time that had no issues.

Re: Windshield
 

Poor prep? It's a ZR1 ... the flagship American sports car! :censored:

Re: Windshield
 

Bob, that's normally covered under your Comprehensive insurance (usually low deductible) and my experience (with Met) is that they will send an expert out to look at it and, if not directly in your field of view or causing a big crack already, they will fill it with epoxy for no charge. They use a vacuum device that essentially sucks the epoxy into the chip. If directly in your field of vision or a large crack it will have to be replaced. I had one on my BMW that was to right of center and they filled it and it has been fine. I can still see it from inside but it is not in my normal field of vision driving. --Bob

Re: Windshield
 

Ray, the ZR-1 had some limitations with its air conditioning system so GM required a windshield with a metallic film in it to assist in reflecting heat away from the inside of the cabin. This is why we have a cutout at the base of our windshields for the "garage door opener". Obviously this was a low volume run due to the low ZR-1 volume; they are no longer reproduced. Most ZR-1 windshields show some degree of lamination, although I don't know that the delamination problem was known to GM while they were in production. According to Marc Haibeck the later years seems the worst, and certainly the very worst I have seen is the last produced ('95 #448) which has spent its entire life in the Corvette Museum. Also I recall that the purple 95 that Jim bought had a lot of delam and I believe he replaced the windshield with a standard Corvette one. Perhaps he could comment on this. My car has a little around the edges. Some have none. But it is certainly quite common. Go to any gathering of ZR-1s and look at them. -Bob

Re: Windshield
 

Thanks Bob.

Re: Windshield
 

Thanks, Bob - good advice! Thanks also for the rationale (note to Ray) for the special lamination; it makes sense but hadn't seen it presented that way before.

Interesting you mention the last ZR-1; I was quite surprised to see the delam on it when I first visited NCM many years ago. With this car having spent its entire life within a climate-controlled environment at NCM, it certainly confirms that environmental conditions (UV rays, etc.) has little or nothing to do with the problem.

On a positive note, it does not seem that delamination creeps much over time; at least mine has not noticeably changed in a decade.

Bob