well i got home today around 4:15, fell asleep and was woke up by my wife about 5:00 some how the back windshield in my firebird (only 1 payment it to the contract) is busted it doesn't appear to have been hit with anything and its not hot enough to explode the glass damn this sucks
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66 289 mild port work edelbrook 600 cfm proformer intake msd/duraspark long tube headers roller tip rockers crane cam flowmasters 3.55 gears b&m transpack

How would being hot (or cold - I've heard that variation as well) explode the glass? If it did, wouldn't there be glass littering the streets of Phoenix every summer?

None the less, damn the bad luck.

thats what i think also i have seen people crack em in the winter poring hot water on them , but have never seen one bust from just hear or cold
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66 289 mild port work edelbrook 600 cfm proformer intake msd/duraspark long tube headers roller tip rockers crane cam flowmasters 3.55 gears b&m transpack

I grew up in canada and have seen 75 below with the windchill and 48 below without a windchill. I have never seen or even heard of a window breaking due to cold weather...
Do you have mischievious kids in the neighborhood with a BB gun.. Just a thought..

the kids having fun with a BB or having fun with the porcelain end of a spark plug. If you hit it just right it will shatter the entire window. all it takes is a tap.
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Red 1967 Ford Fairlane convertible with built 289, 4.11s and T5!

apt. complex lots of bad kids
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66 289 mild port work edelbrook 600 cfm proformer intake msd/duraspark long tube headers roller tip rockers crane cam flowmasters 3.55 gears b&m transpack

a buddy of mine owns a glass shop he can get the glass for 118.00 and the trim/seal kit for 30.00 not sure what install is going to be but he'll lend me a truck to drive for the day
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66 289 mild port work edelbrook 600 cfm proformer intake msd/duraspark long tube headers roller tip rockers crane cam flowmasters 3.55 gears b&m transpack

quote:

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Originally posted by GerryProctor:
How would being hot (or cold - I've heard that variation as well) explode the glass? If it did, wouldn't there be glass littering the streets of Phoenix every summer?

None the less, damn the bad luck.

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SD that appears to be what happened to mine
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66 289 mild port work edelbrook 600 cfm proformer intake msd/duraspark long tube headers roller tip rockers crane cam flowmasters 3.55 gears b&m transpack

Y'all must have some awesome weatherstrip and some other super sealing going on. You'll have to forgive me if I sound skeptical on this one. Just finding it hard to believe that any car is so tightly sealed that it can create an overpressure in the cabin and explode a window out of the car.

it seal prety tight when you shut the doors with the windows up the hatch will jump a little, i still think it had help. im sure that heat ansd cold are factored in in the desige of auto glass . the only warning iv seen is laminated gless when i was tinting my windows said not to heat it . my buddy Randy dose glass all day(not much automotive) and he don't see how heat can exlpode one eather way i got it fixed and get my car back this morring. he told me to pay for half the parts and no labor .im sure he'll get the rest out of me he has two trucks the transmissions have to come out of. guess where ill be
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66 289 mild port work edelbrook 600 cfm proformer intake msd/duraspark long tube headers roller tip rockers crane cam flowmasters 3.55 gears b&m transpack

Engineering possibilities ANYTHING can and will happen. Who knows what combination of things set it off. It could have been moisture, bird droppings, age, pressure points in installation, production quality, etc. I have heard that once a crack starts vibration from the road can cause fragmentation during driving which is quite dangerous. That is the reason a cracked windshield won't pass inspection in any state.
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MET

While I was on active duty at Ft. Bragg, NC as a Military Police we got called to a house due to damage to a servicemember's vehicle. The back window in his minivan was busted and he thought some juveniles did it. The weather changed drastically that night and once we looked at it there was no way it was busted inwards because all of the glass was scattered around the outside of the vehicle, there was only a few small peices on the inside of the van. My guess was that there was a small imperfection in the glass that caused it to bust with the temp change, similar to what can happen in the winter when you hit windshield with heat to defrost it.

I was driving my truck to work one morning, and got a chip/cracked spot from a rock. This was a Friday morning. On Tuesday morning (Monday was a holiday), the spot hadn't spread any (was a half-dollar sized spot or smaller), but after lunch, I look out at it and it had spread a foot across my windshield, I assume just from it getting hotter outside. I think I actually saw it spread a little while I was driving it home that afternoon as well.
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1967 Fairlane 500, 302 V8, Toploader transmission. Maybe I'll eventually get it on the road.

quote:

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Originally posted by GerryProctor:
Y'all must have some awesome weatherstrip and some other super sealing going on. You'll have to forgive me if I sound skeptical on this one. Just finding it hard to believe that any car is so tightly sealed that it can create an overpressure in the cabin and explode a window out of the car.

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