Door Glass, Whats the difference? Advice sought. Options

[frostyf]

Given that doors got a reinforcement bar (late 73?) And the winder mechanism swapped from cable to scissor, does anyone know if the glass wind up window dimensions are actually different?

If you bought decent glass from a 1970 car, would it fit a later type door? Can you swap older glass onto a later door or are they completely different.

Grateful for any advice from those who know!!

Nick

[914Sixer]

One side note, the 74?-76 glass has VW/Audi logo. Do not know change over time frame though.

Early 1973 built up to Jan 1 1973 had the 70-72 early glass. Jan 1973 was when side beam was required and inertia seatbelts were required, door glass had to change with it to later style

[horizontally-opposed]

One side note, the 74?-76 glass has VW/Audi logo. Do not know change over time frame though.

Both sets of early glass that have been in my doors had the logos—now curious if all early glass had the logos?

I've always wondered about those markings, as the glass has to be unique to the 914, no? Not exactly "on brand" for a sports car that was marketed, sold, and supported as a full-fledged Porsche in its biggest market. Perhaps there was a legal reason for the four markings on the door windows…?

Early 1973 built up to Jan 1 1973 had the 70-72 early glass. Jan 1973 was when side beam was required and inertia seatbelts were required, door glass had to change with it to later style

I think there are hybrid 1973 doors—with late glass but no bars. Not sure how many cars were made that way, however, and guessing it is a pretty small number. Did RoW cars get bars, or NA-bound cars only?

[mepstein]

One side note, the 74?-76 glass has VW/Audi logo. Do not know change over time frame though.

Both sets of early glass that have been in my doors had the logos—now curious if all early glass had the logos?

I've always wondered about those markings, as the glass has to be unique to the 914, no? Not exactly "on brand" for a sports car that was marketed, sold, and supported as a full-fledged Porsche in its biggest market. Perhaps there was a legal reason for the four markings on the door windows…?

Early 1973 built up to Jan 1 1973 had the 70-72 early glass. Jan 1973 was when side beam was required and inertia seatbelts were required, door glass had to change with it to later style

I think there are hybrid 1973 doors—with late glass but no bars. Not sure how many cars were made that way, however, and guessing it is a pretty small number. Did RoW cars get bars, or NA-bound cars only?

We have a 76 911 euro Carrera with bolt in door bars so I’m guessing the later 914 doors were a US mandate and not ROW.