PPG Glass Date Codes?

[Musclecarkid]

Anybody have a Chart on PPG Glass Date Codes? I have seen the LOF Chart but nothing on PPG.What do these numbers translate to? (70 Chevelle Convertible Side Door Glass)PPG Safety Plate...AS-2...27-30...DOT 18...M 7 8

[Kurt S]

Best glass info source is Rich's article: http://www.camaros.org/glass.shtml.

[Nova Research Project]

musclecarkid;

Try here for the Normative Practices in First-Generation Camaro Window Glass from camaros.org as a start. Not much on PPG codes, but explains everything else.

AS-2 = "The stronger, 1/4-inch thick, AS-2 tempered glass was normally used in Camaro doors"

27-30 = What you need to know [img]/ubbthreads/images/graemlins/dunno.gif[/img]

DOT 18 = Manufacturer code PPG number is "DOT 18"

M78 = "model numbers to each type of auto glass, and each type received a different model number mark as required by ANSI Z26" M78 is proabably side door or quarter.

Greg

[Musclecarkid]

Ok, I read a ton on auto glass on CRG, but didn't see how to date code PPG Glass. So 27-30 is the date code? What does this mean? Maybe 27 = day, 3 = March, 0 = 1970.???? Anybody know if this is correct?

[Kurt S]

Off the top, doesn't the -30 indicate the plant code it was made at?

[Musclecarkid]

I don't know what 27 30 means. I hope someone can figure this out.

[JoeG]

musclecarKid,
I pulled out two original side pieces of PPG glass that came off my '69 chevelle to check the code.The rt frt.PPG glass reads flow lite [27-29],the smaller rt.r.PPG reads flow lite[26-49]


Now I'd say it's a rating of the glass--at first I thought it was a light transmission rating, but then I found some info on [noise reduction ratings ]and [sound transmission class] on safety tempered glass ,and it's rated by thickness of glass, manufacturing process etc.---the rating system is similar[ 27-30 ]--[26-47]---[25-29] and so on.---Just some more info to kick around----JoeG

[Mr70]

Aren't they still around??
They should have records on file.
Is it possible to stil contact PPG today and ask them what they mean?

[JoeG]

Mr70,
Good idea----Oh yeah---copo9566aa/Roger said ,the Canadian Maple Leaf he painted on the side of your Chevelle is not permanent.

I Called PPG Rick, cust. service said first 2#'s = plant, second 2#'s= day/ month ------but they were thinking of changing over to noise transmission ratings : [img]/ubbthreads/images/graemlins/tongue.gif[/img]------- [img]/ubbthreads/images/graemlins/grin.gif[/img] [img]/ubbthreads/images/graemlins/beers.gif[/img]

[Musclecarkid]

Joe G,Are you saying 27-30 is: 27 = Plant Code and 30 = March 70? Or 3 = day and 0 = ? I'm lost!!Kevin