details from E3 site
I'm thinking the E3 info will carry over to coupe needs -- but I don't really know this... Entertaining too.
Reference:
http://i-vol.com/bmwbavaria/tech.htm#windshield
Windshield Installation: Nightmare avoided.............. .
Alright...A few things that you must know:
* the aluminium window trim cannot be bent and straightened without it looking like crap later;
* You MUST buy a new windshield gasket. They are available new. Using the old one is out of the question;
* Follow these steps and you will not be sorry. Trying to do it any other way and you'll be screwed.
Removal:
1) CUT the old windshield gasket away with a sharp razor, taking care not to scratch paint or window trim. You will really only be able to cut away the part between the windshield trim and the car, but can cut a little of it between the trim and the windshield itself
2) Take tremendous care removing the aluminium trim. Remove the top and sides first. They will typically SLIDE out away from the car. Do not attempt to PULL THEM OUT straight up. Use a lubricant like WD40 or something to loosen them up. You can leave the bottom piece in for removal with the windshield;
3) After you've taken the trim out, you'll be able to cut away most of the old gasket easily, then you can pry the windshield out or from the inside of the car, have TWO people sit in the front seats and push with their stocking feet with some joker standing on the outside, ready to catch the windshield. If you hear a cracking sound, then you haven't cut enough of the old gasket out;
(An aside: while you have the windshield out, you will have easy access to all of the dashboard screws. The only way you can get an E3s dash out is by removing the windshield, so if you're thinking about putting a new one in, this is the time)
Installation:
1) Get two sawhorses or some facsimile thereof;
2) Place windshield face down on the surface;
3) Get new gasket and place in clothes dryer. Turn selector to cottons/high heat and let the gasket get nice and warm. If you are married, put the gasket into a large cloth bag of some sort so you don't get any rubber in the dryer. If you are a bachelor, go to the laundromat on the Marty Roach side of town.
4) After the gasket is nice and pliable, take it out of the dryer . . . put the gasket sealant in the groove of the gasket (where the windshield will go);
5) Put the rubber gasket on the windshield, which (presumably) is still sitting on the sawhorses;
6) At this time, put the windshield trim into the gasket. It is typically six pieces (one bottom, two sides (which also make the top), the center piece (two inches long) and the two bottom corner pieces (also about two inches long). This trim will fit into the gasket and will actually anchor itself behind the glass of the windshield;
7) Use soapy water and soap up the car side of the gasket. Route a thick piece of string (or a thin rope) into the groove of the gasket which will actually fit into the windshield hole of the car;
8) Place the windshield etc., onto the car and while pushing from the outside on the windshield, pull the string from the inside, seating the gasket.
The last part is kind of iffy but that is the standard way to install a windshield. The important part is to remember the trim CAN ONLY go into the gasket while the gasket and windshield is out of the car. There is ABSOLUTELY NO OTHER WAY to install the trim.
Good luck and hire someone else to do it :^)
Bill Gau